Answer:
The observed value of the chi-square statistic is 34.71
Step-by-step explanation:
Given the data in the question';
Calculate the observed value of the chi-square statistic
The chi-square statistic will be;
∑[tex]_{i}[/tex][ ( O[tex]_{i}[/tex] - E[tex]_{i}[/tex])² / E[tex]_{i}[/tex] ]
here O[tex]_{i}[/tex] is observed frequency of [tex]_{i}[/tex]th class
E[tex]_{i}[/tex] is expected frequency of [tex]_{i}[/tex]th class
[tex]_{i}[/tex] = 1, 2 which denote the class of food experts who guess correctly and who didn't guess correctly
so
∈[tex]_{i}[/tex] = n × probability of not guessing correctly = 168 × 2/3 = 112
∈1 = n × probability of guessing correctly 168 × 1/3 = 56
so
∑[tex]_{i}[/tex][ ( O[tex]_{i}[/tex] - E[tex]_{i}[/tex])² / E[tex]_{i}[/tex] ] = [ ( 92 - 56)² / 56 ] + [ ( 76 - 112)² / 112 ]
= 1296/56 + 1296/112
= 23.14 + 11.57
= 34.71
Therefore, the observed value of the chi-square statistic is 34.71
Quick help fast pleaseeeeee
Answer:
No.
Step-by-step explanation:
I am not exactly sure, but you can't divide x and y, which would already make the question null and void. The simplest form would be the form it is in right now.
I really need help on this question
Answer:
[tex]r = 107 \\ q + s = 180 - 107 \\ = 73 \\ q = 73 \div 2 \\ = 36.5[/tex]
Solve this question please
Answer:
e = 1/2
Step-by-step explanation:
[tex]\frac{1}{2}e = \frac{1}{4}\\[/tex]
multiply both sides by 2
[tex]e = 1/2[/tex]
What is 75% of 780?
75% of 780 is
Answer:
If you are using a calculator, simply enter 75÷100×780 which will give you 585 as the answer.
The length of a photograph of Mr. Lemley playing golf is 1475 inches. If the area
of the photo is 33/20 square inches, what is the width of the photograph? *
Answer:
1.12 × 10^-3
Step-by-step explanation:
The computation of the width of the photograph is as follows:
As we know that
Area of the rectangle = length × width
33 ÷ 20 square inches = 1475 inches × width
So, the width is
= Length ÷ area
= 1475 inches ÷ (33 ÷ 20 square inches)
= 1.12 × 10^-3
Katy ran a mile in 5 minutes. How many seconds are in 5 minutes? Answer without units. *
Captionless Image
Answer:
300 i think
Step-by-step explanation:
Answer:
300 seconds
Step-by-step explanation:
Once Isabel rented the warehouse space, she decided to post ads on several social media sites to advertise her online bookstore. Let x represent the number of months the ads have been posted. Isabel finds that the function below describes the number of books sold as a function of the number of months her ads have been posted. Isabel finds that the function below describes the number of books sold as a function of the number of months her ads have been posted.
f(x) = 1000(∛x) + 1000
Required:
How many books were sold after 8 months?
Answer:
3000 books
Step-by-step explanation:
The correct function that describes the number of books sold as a function of the number of months her ads have been posted is expressed as;
f(x) = 1000(∛x) + 1000
x is the number of months the ads have been posted
Required:
Number of books sold after 8 months
To get this we will substitute x = 8 into the expression given
f(8) = 1000(∛8) + 1000
f(8) = 1000(2) + 1000
f(8) = 2000 + 1000
f(8) = 3000
Hence the total number of books that were sold after 8 months is 3000 books
Answer:
3000 were sold after 8 months
Step-by-step explanation:
Solve the inequality x +8 > 3
Answer:-5
Step-by-step explanation:
I really need help on this so PLS HELP!
Answer:
1. 63
2. 40%
3. 50
Find the solution Y=-3x-5 y=9x+7 and show on graph
Answer:
(-1, -2)
Explanation:
2. Ava has 6 boxes of cookies, each box has 30 cookies. Select all the equations that describe the situation. [2 points]
a.ᐧ30=6
b.=6 ᐧ30
c.6=30
d.ᐧ6=30
e.306=
Answer:
B, 6 x 30
Step-by-step explanation:
Because that's the only answer.
billy jogs 4/5 kilometer every minute.how many kilometers does he jog after 6 1/8 minutes?
Answer:
[tex]Distance =24\frac{1}{2}\ km[/tex]
Step-by-step explanation:
Given
[tex]Rate = \frac{4}{5} km/ min[/tex]
Required
Determine the distance covered in [tex]6\frac{1}{8}\ min[/tex]
The distance is calculated using:
[tex]Distance = Rate * Time[/tex]
This gives:
[tex]Distance = 4 * 6\frac{1}{8}[/tex]
Convert to improper fraction
[tex]Distance = 4 * \frac{49}{8}[/tex]
[tex]Distance = \frac{4 * 49}{8}[/tex]
[tex]Distance = \frac{196}{8}[/tex]
[tex]Distance =24\frac{1}{2}\ km[/tex]
What is the simplified form of (-3xy)(5xy-1)?
Answer:
-15x²y²+3xy
Step-by-step explanation:
((−3x)(y))(5xy−1)
=((−3x)(y))(5xy+−1)
=((−3x)(y))(5xy)+((−3x)(y))(−1)
=−15x²y²+3xy
please don't just take my points I need help plzzz help me
1. Anakin is saving for a Xbox One. He currently has $165 saved and earns $40 per week doing chores around the house. If an Xbox costs $500 plus 10% sales tax, how long will it take for him to save that amount? Write your answer in a complete sentence.
2. Write an equation in slope-intercept form for the previous scenario. Define the domain and range for Anakin. Graph the equation on the coordinate plane. Circle the point at which he has saved enough to purchase the Xbox.
3. For the following system of equations, complete a table of at least 5 points for each equation, then graph the system on the coordinate plane. Describe the solution. y = -3x + 4 6x + 2y - 8 = 0
4. Solve the following system of equations: y - 3x + 15 = 10 6 - 4x = y
5. Create and solve a system of equations for the following scenario: Luke and Leia are selling hot dogs and hamburgers at a minor league baseball game. At the end of the day they determine they have sold a total of 45 items and earned $195. If hot dogs cost $4 and hamburgers cost $5, how many did they sell of each?
6. Graph the following system of linear inequalities. Identify at least two points in the solution: y < 5 - 2x x + 5y > -7
Answer:
10
Step-by-step explanation:
0,2,2,4,?,10,16,26.... which number replaces the question mark in the number pattern shown
Answer:
6
Step-by-step explanation:
3 over x plus 6 over y
Answer:
[tex]\frac{3}{x}+\frac{6}{y}[/tex]
I will give brainiest.
Answer:
the third one is the answer
mattew drives at an average speed of 62 mph for 5 hours. b
how many miles does mattew drive
Answer:
He drove 310 miles per hour
Step-by-step explanation:
So this means that in one hour he drives 62 miles
to find how much in five hours multiply 5 by 62
5x62=310miles
Answer:
310 miles
Step-by-step explanation:
62times 5 =310
A baker has 20 pounds of sugar . He uses 3/8 of the sugar to bake cookies . How many pounds does he have left ?
1.3.27
The length of a new rectangular playing field is 8 yards longer than quadruple the width. If the perimeter of the rectangular playing field is 506 yards, what are its dimensions?
The width is
Answer:
The width of the field is 49 yards and the length is 204 yards.
Step-by-step explanation:
Let the width be b.
Length = 8+4b
The perimeter of the rectangle = 506 yards
The perimeter of the rectangle is given by :
P=2(l+b)
So,
506=2(8+4b+b)
253 = 8+5b
245 = 5b
b = 49 yards
Length, l = 8+4b
= 8+4(49)
= 204 yards
So, the width of the field is 49 yards and the length is 204 yards.
(5pts) Recall that a standard deck of cards has 52 cards. The cards can be classified according to suits or denominations. There are 4 suits, hearts, diamonds, spades and clubs and there are 13 cards, each of a different denomination, in each suit. The 13 denominations are, Aces, Kings, Queens, ...,Twos, with 4 cards in each denomination (one of each suit). A poker hand consists of a sample of 5 cards drawn from the deck (without replacement). How many poker hands consist of 2 Aces, 2 Kings and a card of a different denomination?
Answer:
1584
Step-by-step explanation:
Distribution of cards in a deck:
Total number of cards = 52
Total number of cards drawn = 5
Sampling without replacement :
Number of Aces = 4
Number of kings = 4
Card different from Aces and kings = total cards - (4 + 4) ;
52 - 8 = 44 cards
(Drawing 2 aces from 4) * (2 kings from 4) * 1 other card of different denomination)
Using combination :
4C2 * 4C2 * 44C1
Using calculator :
6 * 6 * 44
= 1584
Suppose Anthony Ianni attempted 18 baskets in a basketball game. If the ratio of baskets made to baskets missed is 1:5, how many baskets did Ianni make?
Answer:
Number of baskets Lanni make = 3 basket
Step-by-step explanation:
Given:
Total attempt = 18 times
Ratio(Basket make : Basket missed) = 1:5
Find:
Number of baskets Lanni make
Computation:
Number of baskets Lanni make = Total attempt x [Basket make ratio]
Number of baskets Lanni make = 18 x [1/(1+5)]
Number of baskets Lanni make = 3 basket
What is the 10th term in -9,-6,-1,6,15
Answer:
90
Step-by-step explanation:
This is an increasing sequence, with -9 as its first term. The first increase is +3, then +5, +7, and +9. The differences increase by 2 each time. The sixth term will be 15 + 11, and the seventh would be 15 + 11 + 13. We can follow this pattern to get to the tenth term. 15 + 11 + 13 + 15 + 17 + 19 = 90
can someone give me 500 pts and 5 brainliest
Answer:
No -_-
Step-by-step explanation:
wot why??- 0,0
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plsss help me solve question 2
[tex]x1+2x2-x3=3, 2x1+x2-2x3=1, 3x1+4x2-5x3=5[/tex]
Answer: x1 = 0; x2 = 5/3; x3 = 1/3
x1 + 2x2 - x3 = 3 => 2x1 + 4x2 - 2x3 = 6
2x1 + x2 - 2x3 = 1
=> 4x2 - x2 = 5
⇔ 3x2 = 5
⇔ x2 = 5/3
with x2 = 5/3, we have: x1 - x3 = 3 - 10/3 = -1/3
3x1 - 5x3 = 5 - 4.5/3 = -5/3
=> x1 = 0
x3 = 1/3
Step-by-step explanation:
Which institution informs individuals and businesses about their rights and responsibilities?
A.The Federal Trade Commission
B.The Office of the Comptroller
C.The Federal Reserve System
D.The Bureau of Consumer Protection
Answer:
A. The Federal Trade Commission
Step-by-step explanation:
The FTC inaugurated its doors in March 1915. The FTC's purpose is to protect consumers and encourage contestants. The FTC cannot solve individual grievances, but it can present knowledge about what steps to exercise. The FTC states that accusations can improve it and its law implementation partners identify patterns of fraud and exploitation, which may direct to examinations and preventing unfair marketing practices.
Answer:
The Bureau of Consumer Protection
Step-by-step explanation:
The FTC’s Bureau of Consumer Protection stops unfair, deceptive and fraudulent business practices by collecting reports from consumers and conducting investigations, suing companies and people that break the law, developing rules to maintain a fair marketplace, and educating consumers and businesses about their rights and responsibilities.
2 1/4 - 1/15
PLEASE HELP MEEEEEEEEEEEEEEEEEEEEEEE
Answer:
2 11/60
Step-by-step explanation:
15/60 -4/60=11/60
2+11/60=2 11/60
Given the following sets, find the set .
U{1, 2, 3, . . ., 7}
A{1, 3, 4, 5}
B{2, 3, 5}
C{1, 2, 3, 4, 6}
What is the equation of the line?
Answer:
So first y intercept
SO the first part where the line hits the Y axis is 2
So the y intercept is 2 Which leaves 2 choices .
Now from that y-intercept or from any point, find the slope by just rising or running till you reach a point which in this case would be
Y=1/2x+2