Select the compound inequality shown on the graph. -5 -4 -3 -3 -2 -1 0 1 2 3 4 5 5 o A. x>-1 and x 4, or -1 -1 and x < 2, or -1 -1 and x = 5, or -1​

Answer:

Ross's profit it 1,781.37

Step-by-step explanation:

$35 per person and 54 people= 35x54=1890

Profit= the amount of money he makes after his expenses.

1890-108.63=1781.37

Opinion Answer: G or J

Answer:

1

Step-by-step explanation:

Remember that the equation to graph a linear graph or line is y=mx+b

m is your slope and b is your y intercept. Since your line hits the y-axis at y=1, b=1.

Answer:

a) The lower bound of the confidence interval is below 4.50 minutes, which means that there is not sufficient evidence to say that the mean wait time for customers is longer than 4.50 minutes with a 98% level of confidence.

b) The null hypothesis is [tex]H_0: \mu \leq 4.50[/tex], and the alternate hypothesis is [tex]H_a: \mu > 4.50[/tex]

Step-by-step explanation:

Finding the confidence interval:

We have that to find our [tex]\alpha[/tex] level, that is the subtraction of 1 by the confidence interval divided by 2. So:

[tex]\alpha = \frac{1 - 0.98}{2} = 0.01[/tex]

Now, we have to find z in the Ztable as such z has a pvalue of [tex]1 - \alpha[/tex].

That is z with a pvalue of [tex]1 - 0.01 = 0.98[/tex], so Z = 2.327.

Now, find the margin of error M as such

[tex]M = z\frac{\sigma}{\sqrt{n}}[/tex]

In which [tex]\sigma[/tex] is the standard deviation of the population and n is the size of the sample.

[tex]M = 2.327\frac{2.1}{\sqrt{53}} = 0.67[/tex]

The lower end of the interval is the sample mean subtracted by M. So it is 4.94 - 0.67 = 4.27 minutes

The upper end of the interval is the sample mean added to M. So it is 4.94 + 0.67 = 5.61 minutes.

a. Is there sufficient evidence to say that the mean wait time for customers is longer than 4.50 minutes with a 98% level of confidence?

The lower bound of the confidence interval is below 4.50 minutes, which means that there is not sufficient evidence to say that the mean wait time for customers is longer than 4.50 minutes with a 98% level of confidence.

b. State the null and alternative hypotheses for the test.

Testing if there is evidence to say that the mean wait time for customers is longer than 4.50 minutes, which is the alternate hypothesis.

So the null hypothesis is [tex]H_0: \mu \leq 4.50[/tex], and the alternate hypothesis is [tex]H_a: \mu > 4.50[/tex]

Answer: 10.4

Step-by-step explanation:

(10x - 4) ÷ 5 = 20

             * 5    * 5

10x - 4 = 100

     + 4    + 4

10x = 104

/ 10   / 10

x = 10.4

Answer:

Step-by-step explanation:

this is really tricky

so the first pick will make sense

P(m1) 26/46   for pick on.. but that removed one male from the population and also one from the total

P(m2) 25/45

now multiply those two fractions together to get the total probability

26/46 * 25/45 = 650/2070  obviously reduce fraction

65/207= .3140096618

They don't say if you are supposed to use a percent or not

so just try 0.314   :/

Answer:

180, because you'd do 12 x 15

Answer:

Soln,

2 has the highest frequency

Mode=2

Answer:

So first plot the points then move it the way ( x-3, y-4)

remember for the x axis you slide left to right and we know that left is negative so you would go left 3 times and for y you would go down 4 times do it for each point.

Answer:

P ≈ 37.07752081

Step-by-step explanation:

LN = 9          Count

AL = 9          Count

Use the distance formula to find ND:

[tex]d = \sqrt {\left( {x_2 - x_1 } \right)^2 + \left( {y_2 - y_1 } \right)^2 }[/tex]          Distance formula

N(6,5), D(9,-1)

[tex]\sqrt{(9-6)^{2}+([-1]-5)^{2}}[/tex]                  Plug in

[tex]3\sqrt{5}[/tex]

ND = [tex](3\sqrt{5}[/tex]

Use the distance formula to find DA:

D(9,-1), A(-3,-4)

[tex]d = \sqrt {\left( {x_2 - x_1 } \right)^2 + \left( {y_2 - y_1 } \right)^2 }[/tex]          Distance formula

D(9,-1), A(-3,-4)

[tex]\sqrt{([-3]-9)^{2}+([-4]-[-1])^{2}}[/tex]          Plug in

[tex]3\sqrt{17}[/tex]

DA = [tex]3\sqrt{17}[/tex]

Part two

LN = 9

ND = [tex](3\sqrt{5}[/tex]

AL = 9

DA = [tex]3\sqrt{17}[/tex]

P = LN + ND + AL + DA          Perimeter = sum of the measures of all sides

P = 9 + [tex](3\sqrt{5}[/tex] + 9 + [tex]3\sqrt{17}[/tex]

P ≈ 37.07752081

Answer:

P ≈ 37.07752081

Step-by-step explanation:

supersciencestudy was correct, you can go ahead and mark him Brainliest!

Answer:

6 is the median

Step-by-step explanation:

The median is the same as the number in the middle, and the number in the middle is 6.

Answer:

Solving quadratic equations can be difficult, but luckily there are several different methods that we can use depending on what type of quadratic that we are trying to solve. The four methods of solving a quadratic equation are factoring, using the square roots, completing the square and the quadratic formula.

Step-by-step explanation:

can you mark me brainliest

Answer:

2

Step-by-step explanation:

Answer:

1 + 1 is 2 :D

Step-by-step explanation:

How many hands do you have? You have one on each hand, but total you have 2. :D

LOL I would do this too :D

Answer:

The standard deviation of the distribution of TSH levels of healthy individuals is of 1.2658 units/mL.

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the z-score of a measure X is given by:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

Mean of 3.3 units/mL

This means that [tex]\mu = 3.3[/tex]

Suppose also that exactly 98% of healthy individuals have TSH levels below 5.9 units/mL.

This means that when [tex]X = 5.9[/tex], Z has a pvalue of 0.98. So Z when X = 5.9, has a pvalue if 0.98, that is, Z = 2.054. We use this to find [tex]\sigma[/tex]

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

[tex]2.054 = \frac{5.9 - 3.3}{\sigma}[/tex]

[tex]2.054\sigma = 2.6[/tex]

[tex]\sigma = \frac{2.6}{2.054}[/tex]

[tex]\sigma = 1.2658[/tex]

The standard deviation of the distribution of TSH levels of healthy individuals is of 1.2658 units/mL.

Answer:

See below

Step-by-step explanation:

Below -0.5: -5.1, -2.5, -5.8

Between -0.5 and 2.9: 2.3, 2.5, -0.1

Above 2.9: 3, 5.2

Below -0.5: -5.1, -2.5, -5.8

Between -0.5 and 2.9: 2.3, 2.5, -0.1

Above -2.9: 3, 5.2

Answer:

50 cups water

Step-by-step explanation:

10 cups water     = 6 cups lemon juice

x   cups water     = 30 cups lemon juice

To get from 6 to 30, we needed to do x5, so lets do that for 10 as well.

10x5 cups water = 30 cups lemon juice

50 cups water    = 30 cups lemon juice

Answer:

See below

Step-by-step explanation:

If a proposed value is outside the confidence interval, it is not a plausible value because the interval never catches it. So B is your best choice.

Answer:

C is correct

Step-by-step explanation:

Answer:

3rd option

Step-by-step explanation:

edge

Answer:

I just took the test and the answer is c

Step-by-step explanation:

Answer:

990 cars

Step-by-step explanation:

Find how many cars pass through at 6am, t=0:

r(0)= 300+600(0)-90(0²) = 300

Find how many cars pass through at 9am, t=3:

r(3)= 300+600(3)-900(3²)=300+1800-810=1290

Find the difference (how many cars pass between 6am and 9am): 1290-300=990

Answer:

C is the correct answer.

Step-by-step explanation:

Putting the value of x & y as -4 & 9 respectively.

9=(-1/4)(-4) + 8

9=1+8

9=9 [True]

Answer:

sólo pasa por 100% nomás

Answer:

a)-3+2x=y

b)-3+2(-6)=y

y=-15

Step-by-step explanation:

hope i helped youu

Answer:

133

Step-by-step explanation:

A + B = 47

A + B + C = 180

47 + C = 180

C = 180 - 47

C = 133

Answer:

210 ways

Step-by-step explanation:

Given

[tex]n = 7[/tex] --- total

[tex]r = 3[/tex] --- selection

Required

In how many ways can be selection be done

Since orders does matter, then it is permutation.

This is calculated as:

[tex]^nP_r = \frac{n!}{(n-r)!}[/tex]

So, we have:

[tex]^7P_3 = \frac{7!}{(7-3)!}[/tex]

[tex]^7P_3 = \frac{7!}{4!}[/tex]

Solve each factorial

[tex]^7P_3 = \frac{7*6*5*4!}{4!}[/tex]

[tex]^7P_3 = 7*6*5[/tex]

[tex]^7P_3 = 210[/tex]

Answer:

D. y=3x

Explanation:

Answer:

They are all true.

Step-by-step explanation:

If we substitute each letter with the number that they correspond to, then it should be easy math.

Answer 1: C (100) > L (50). This is true.

Answer 2: XXX (30) < XL (40). This is also true.

Answer 3: IX (9) < XIV (14). This is true.

I do not know what your teacher wants you to put, but there is not an incorrect answer among these. Is there a fourth answer?

Answer:

The t distribution is used, because we have the standard deviation for the sample.

Step-by-step explanation:

When to use the z or the t distribution?

When we have the standard deviation for the population, we use the z distribution.

When we have the standard deviation for the sample, we use the t distribution.

In this question:

We have the standard deviation for the sample, which means that the t distribution is used.