Lilly was working on a report on Italian and Spanish scientists. She decided to find a 96 percent confidence interval for the difference in mean age at the time of significant scientific discoveries for Italian versus Spanish scientists. She found the ages at the time of science discovery of all the members of both groups and found the 96 percent confidence interval based on a t-distribution using a calculator. The procedure she used is not appropriate in this context because
The entire population is measured in both cases, so the actual difference in means can be computed and a confidence interval should not be used.
The sample sizes for the two groups are not equal.
Age at the time of science discovery occurs at different intervals in the two countries, so the distribution of ages cannot be the same.
Age at the time of science discovery is likely to be skewed rather than bell shaped, so the assumptions for using this confidence interval formula are not valid.
Age at the time of science discovery is likely to have a few large outliers, so the assumption for using this confidence interval formula is not valid.
A t statistic was used to conduct a test of the null hypothesis H0: µ = 11 against the alternative Ha: µ ? 11, with a p-value equal to 0.042. A two-sided confidence interval for µ is to be considered. Of the following, which is the largest level of confidence for which the confidence interval will NOT contain 11?
A. A 90% confidence level
B. A 92% confidence level
C. A 96% confidence level
D. A 97% confidence level
E. A 98% confidence level

Answers

Answer 1

Answer:

The answer is "Option A and Option B".

Step-by-step explanation:

In question 1:

In all cases, the entire population is measured so that the actual medium discrepancy could be measured as well as an interval of trust cannot be used.

This issue would be that she calculated the ages with all representatives of both classes, such that she measured a whole population. It's not necessary.

In question 2:

When the p-value is 0.042. At 90% trust and 92% trust level 11 (p-value below 0.10 and 0.08) are not included. however the biggest confidence level of 92%. Consequently, the largest trust level where the 11 is Not included in the trust interval is 92% trust.

Lilly Was Working On A Report On Italian And Spanish Scientists. She Decided To Find A 96 Percent Confidence

Related Questions

Delta makes 12-volt car batteries. These batteries are known to be normally

distributed with a mean of 45 months and a standard deviation of 8 months.

What percent of Delta car batteries last between three and four years?

Answers

Answer:

The probability that Delta car batteries last between three and four years

P(36≤X≤48) = 0.5188

The percentage of that Delta car batteries last between three and four years

P(3≤X≤4) = 52%

Step-by-step explanation:

Step(i):-

Given that the sample size n =12 -volt car batteries

Let  'X' be a Random variable in a normal distribution

Given that mean of the normal distribution = 45 months

Given that the Standard deviation of the normal distribution = 8months

Step(ii):-

Let  X₁ = 3 years = 12 × 3 = 36 months

[tex]Z_{1} = \frac{x_{1} -mean}{S.D} = \frac{36-45}{8} = -1.125[/tex]

Let X₂ = 4 years  = 12 × 4 = 48 months

[tex]Z_{2} = \frac{x_{2} -mean}{S.D} = \frac{48-45}{8} = 0.375[/tex]

Step(iii):-

The probability that Delta car batteries last between three and four years

P(36≤X≤48) = P(-1.125≤Z≤0.375)

                   = P(Z≤0.375) - P(Z≤-1.125)

                   = 0.5 +A(0.375) - (0.5-A(1.125)

                   = 0.5 + 0.1480 - (0.5 -0.3708)

                  = 0.1480 + 0.3708

                 = 0.5188

Final answer:-

The probability that Delta car batteries last between three and four years

P(36≤X≤48) = 0.5188

The percentage of that Delta car batteries last between three and four years

P(3≤X≤4) = 52%

Plz help me well mark brainliest if you are correct!

Answers

It’s 4 feet, have a good day!!

Multiply: (9-8i)(-6,-15i)

Answers

Answer:

(9-8i)(-6,-15i) = -174 + 183 i

Step-by-step explanation:

Explanation:-

Given that  the complex numbers

                           (9-8i)(-6,-15i)

multiply           ( 9-8i ) ( -6 -15i)

               =  -54 - 9(-15 i) + 48 i +  120(i)²

               =   -54 + 135 i + 48 i - 120

              =    -174 + 183i

Final answer:-

(9-8i)(-6,-15i) = -174 + 183 i

Brody created a map of his neighborhood using a scale of 2 inches = 3 blocks. If his street is 9 blocks long, how long will it be on the map?

Answers

Answer:

6 inches

Step-by-step explanation:

If 3 blocks equals 2 inches, then we must first find out how many times 3 can fit into 9. We do this by dividing 9 by 3 to get 3. To get your final answer just multiply 2 by 3 and you will get 6 inchs. I hope this helped :0

What's the circumference of a
circle with a diameter of 9 inches?
Use 3.14 for n.

Answers

Answer:

28.26 in

Step-by-step explanation:

Radius = (1/2) diameter

Radius = (1/2)(9)

Radius = 4.5 in

Circumference = 2πr

Circumference = 2(3.14)(4.5)

Circumference = 28.26 in

pls help help help 11 points also this is mobymax

Answers

Answer: 18 + 6a + 6b

Step-by-step explanation:

write 10075302 in words in both the Indian system and international system and rearrange the digits to get the smallest number​

Answers

Answer:

10075302

Indian System -

1,00,75,302

One crore seventy-five thousand three hundred and two.

International System -

10,075,302

Ten million seventy five thousand three hundred and two.

Smallest Number -

10002357.

please guys help please

Answers

Answer:

See attachment for plot

Step-by-step explanation:

The attachment has enough information to solve for only question (4).

Solving (4), we have:

[tex]W = (-1,-1)[/tex]

[tex]X = (4,1)[/tex]

[tex]Y = (4,5)[/tex]

[tex]Z =(1,7)[/tex]

Required

Reflect over the x-axis

When a point (x,y) is reflected over the x-axis, the resulting point is (x,-y)

i.e.

[tex](x,y) => (x,-y)[/tex]

So, we have:

[tex]W = (-1,-1)[/tex] ==> [tex]W' =(-1,1)[/tex]

[tex]X = (4,1)[/tex] ==>[tex]X' = (4,-1)[/tex]

[tex]Y = (4,5)[/tex] ==> [tex]Y' =(4,-5)[/tex]

[tex]Z =(1,7)[/tex] ==> [tex]Z' = (1,-7)[/tex]

So, we plot on a grid, the following points:

[tex]W' =(-1,1)[/tex]

[tex]X' = (4,-1)[/tex]

[tex]Y' =(4,-5)[/tex]

[tex]Z' = (1,-7)[/tex]

See attachment for plot

describe fully the graph which has equation [tex]x^{2} +y^{2} =9[/tex]

Answers

Its a circle
center coordinates are O (0; 0)
Radius is 3

Find the value of x. Round to the
nearest tenth.
26
12
х
X=
= [?]

Answers

Answer:

X = 5.9 (in degree mode)

Step-by-step explanation:

Do the following:

12(tan26) = X

Plugging this into a calculator, you will get:

X = 5.9 (in degree mode)

y=2x-3 what is y if x is 4, -2, 100, 5, 2.6

Answers

The answer is 5 because when you substitute 4 into the equation you get: y=2(4)-3
y=(8)-3
y=5

2. Half of Robert's piece of wire is equal to of Maria's wire. The total length of their wires is 10 feet. How much longer is Robert's wire than Maria's?

Answers

Step-by-step explanation:

Given that,

Half of Robert's piece of wire is equal to of Maria's wire i.e.

[tex]\dfrac{R}{2}=M[/tex] ....(1)

Total length of the wires = 10 feet

ATQ,

[tex]R+M=10[/tex] ....(2)

Use equation (1) in (2).

[tex]R+\dfrac{R}{2}=10\\\\\dfrac{3R}{2}=10\\\\R=\dfrac{20}{3}\\\\R=6.67\ ft[/tex]

So,

[tex]M=\dfrac{6.67}{2}\\\\M=3.33\ ft[/tex]

Hence, this is the required solution.

Helpppppppp me pleases

Answers

2 1/2 = B is the answer

Answer:

Try B

Step-by-step explanation:

Which of these could you measure with a ruler?
A. the volume of water in a cup
B. the volume of cream in a cup of coffee
C. the length of a textbook
D. the weight of a watermelon

Answers

Length of a text can be measured with ruler. Therefore, option C is the correct answer.

What is Metric System?

Everything around us has a measurement value, from the amount of sugar you put in a cake to the size of a football field. Each thing is measured differently based on its length, weight, volume, or duration. With these measurements, the idea of "Metric System" is introduced.

A ruler, sometimes called a rule, line gauge, or scale, is a device used in geometry and technical drawing, as well as the engineering and construction industries, to measure distances or draw straight lines.

Length of a text can be measured with ruler.

Therefore, option C is the correct answer.

Learn more about the Metric System here:

https://brainly.com/question/25966695.

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Answer:

C

Step-by-step explanation:

solve 4x-5/5=3
thankyou

Answers

Answer:

x = 1

Step-by-step explanation:

4x - 5/5 = 3

4x - 1 = 3

add 1 to each side of the equation:

4x = 4

divide both sides by 4:

x = 1

Answer:

4x=3+5/5

Step-by-step explanation:

like term

4x=8/5

20x/20=8/20

x=2/5

Find X.
Round to the nearest tenth.
Z
17 ft
8 ft
Х
16 ft
Y
X= [?]°
Law of Cosines: c2 = a2 + b2 - 2ab cos C
Fnter

Answers

Answer:
83

Step-by-step explanation:
Just did it on acellus

Answer:

83

Step-by-step explanation: st had this question

Which of the following is a true proportion

Answers

The second one, your welcome

What is the value of the expression 6 3/4 (- 11.5)?
GO3

Answers

Answer:

-77.625

Step-by-step explanation:

How to find

To evaluate an algebraic expression means to find the value of the expression when the variable is replaced by a given number. To evaluate an expression, we substitute the given number for the variable in the expression and then simplify the expression using the order of operations. Therefore, the value of the expression 6 3/4 (- 11.5) is -77.625.

Simplify the radical expression ⁴√625x¹²y⁸

Not sure if it's A or D PLEASE HELP ​

Answers

Answer:

Step-by-step explanation:

I think it could be D

Sorry if not correct

a circle passes through the points o(0,0), a(8,4) and b(6,6). show that oa is a diameter of the circle and find the equation of the circle

Answers

9514 1404 393

Answer:

  (x -4)² +(y -2)² = 20

Step-by-step explanation:

The circle is the circumcircle of triangle OAB. Then OA will be a diameter if angle OBA is a right angle. We can check that by looking at the slopes of AB and BA.

  B-O = (6, 6)-(0, 0) = (6, 6)   ⇒   slope = Δy/Δx = 6/6 = 1

  A-B = (8, 4) -(6, 6) = (2, -2)   ⇒   slope = -2/2 = -1

These slopes have a product of -1, so OB ⊥ BA. The hypotenuse (OA) of ΔOBA is the diameter of the circle.

Then the midpoint of the hypotenuse is the center of the circle.

  C = (O +A)/2 = ((0, 0) +(8, 4))/2 = (4, 2)

The equation is ...

  (x -h)² +(y -k)² = r² . . . . . circle with center (h, k) and radius r

The radius is the distance from O to C, so is ...

  r² = 4² +2² = 20

and the equation of the circle is ...

  (x -4)² +(y -2)² = 20 . . . . equation of the circle

BEST ANSWER GETS BRAINLIEST !!!! Write the equation of the function graphed below:
Jo/y
9
8
7
6
5
4
3
2
X
-10 -9 -8 -7 -6 -5 -4 -3 -2 -1
.
1 2 3
8 9 10
2.
-3
.
-6
-7
-8
-9
-10

Answers

Answer:

f(x)= 2 ³√x+4

Step-by-step explanation:

Thats the answer

The equation of the function is f(x) = 2∛x -4.

What is Function?

In mathematics, a function is an expression, rule, or law that establishes the relationship between an independent variable and a dependent variable. In mathematics, functions exist everywhere, and they are crucial for constructing physical links in the sciences.

We will take two points from the graph substitute in each function.

So, the points are (0, -4) and (1, -2).

1. f(x) = ∛x -4

For x= 0

f(x) = ∛0 -4 = -4

and, For x= 1

f(x) = ∛1 -4 = 1 -4 = -3  (False)

2. f(x) = 2∛x -4

For x= 0

f(x) = 2∛0 -4 = -4

and, For x= 1

f(x) = 2∛1 -4 = 2 -4 = -2 (True)

3. f(x) = 2∛x +4

For x= 0

f(x) = 2∛0+4 = 4

and, For x= 1

f(x) = 2∛1 +4 = 2+4 = 6 (False)

4. f(x) = ∛x +4

For x= 0

f(x) = ∛0 +4 = 4

and, For x= 1

f(x) = ∛1 +4 = 1 +4 = 5 (False)

Thus, the required function is f(x) = 2∛x -4.

Learn more about Function here:

https://brainly.com/question/12431044

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900%
0f what number is 5,580

Answers

620 is the answer. Brainliest?

Stanky I need help PLSS ASAPPP

Answers

Answer: B 14.4

Explanation: multiply 8 times 3.6= 28.8
Then divide 28.8 by 2 because you always have to divide by 2 when is a triangle

Answer:

I would say B

Step-by-step explanation:

sorry if the answer was wrong i am bad at math

15 PTS!!! HELP IMMEATLEY
Aaron is designing a party game in which he needs exactly 24 possible outcomes. Which sets of actions can he use to have a statistically fair game?

Randomly select an odd digit {1, 3, 5, 7, 9}, then flip a coin twice.

Randomly select a number from 1 to 16, then roll an 8-sided number cube with the digits 1 to 8.

Spin this and roll an 8-sided number cube with the digits 1 to 8.
Select a card from a set of cards with the letters A through N, then spin this once.
Select a card from a set of cards with the letters A through D, then spin this once.
Toss a coin twice, then roll a 6-sided number cube with the digits 1 to 6.

Answers

Answer:

Select a card from a set of cards with the letters A through D, then spin this once.

Spin this and roll an 8-sided number cube with the digits 1 to 8.


PLEASE HELP !! ILL GIVE BRAINLIEST !!

Answers

Answer:the first one opn and qps

Step-by-step explanation:

PLEASE HELP !!!! ILL GIVE BRAINLIEST !!!

Answers

Answer:

113

Step-by-step explanation:

pls help willl give brainlist

Answers

Answer:

15.1666666667

Step-by-step explanation:

Convert this rational number to its decimal form
and round to the nearest thousandth.
1/7 = _)[?]

Answers

Answer:

=0.1428571428751

I hope it's helps you

diffrentiate Insin³x​

Answers

Step-by-step explanation:

ln((sin(x))^3)'

Chen Lu

= (((sin(x))^3)' / (sin(x))^3

Chen Lu

=(3sin²(x)cos(x)/ (sin(x))^3

= 3cos(x)/sin(x)

=3cot(x)

PLEASE HELP ME THIS IS URGENT I HAVE 6 MINUTES PLEASEE

Answers

Answer:

1 goes to 2

2 goes to 4

3-goes to 1

and 4 goes to 3

Step-by-step explanation:

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Find the measure of each angle. cuanto es 45+45+45+45+45+45+45+45. PLZ HELP!! "No Person except a natural born Citizen, or a Citizen of the United States, at the time ofthe Adoption of this Constitution, shall be eligible to the Office of President; neither shallany Person be eligible to that Office who shall not have attained to the Age of thirty fiveYears, and been fourteen Years a Resident within the United States" Article 2, Section 1,US Constitution15. According to the quotation above, which of the following potential presidential candidatesmeets the formal qualification to be elected as President?a. Born in Argentina, mother born in Alabama, 32 years oldb. Born in Alaska, lived in Mexico for 3 years, returned to US 16 years ago, 34 yearsoldc. Born in Washington, D.C., mother born in Puerto Rico, 41 years oldd. Born in Arizona, lived overseas for 30 years, returned to US 8 years ago, 39 yearsold The amount of energy a substance has during a phase change ____________ . 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