Identify the equations as parallel lines, perpendicular lines, or neither.

The CEO of a large electric utility company claims that 80 percent of his 1,000,000 customers are very satisfied with the servic

Oksana_A [137]

Answer:

Conclusion: The proportion of customers satisfied with the service they receive from the large electric utility company is different from 80%, the claim made by the CEO.

Step-by-step explanation:

To test the claim made by the CEO of a large electric utility company the newspaper must conduct a hypothesis test for one proportion.

Assumption:

The significance level (α) of the test can be assumed to be 5%.

Hypothesis:

$H_{0}:$ The proportion of customers satisfied with the service they receive is 0.80, i.e. $p=0.80$

$H_{a}:$ The proportion of customers satisfied with the service they receive is different from 0.80, i.e. $p\neq 0.80$

Decision Rule:

If the p-value of the test is less than the significance level (α) then the null hypothesis may be rejected. But if the p-value is more than the significance level (α) then we cannot reject the null hypothesis.

Test Statistics:

As the sample size is large, i.e.n = 100 > 30, then according to the central limit theorem sampling distribution of sample proportion will follow the normal distribution.

The test statistic used is:

$z=\frac{\hat p-p}{\frac{\sqrt{p(1-p)}} {n} }$

Given:

The p-value of the hypothesis test is computed to be 0.894.

That is:

$p-value=0.894>\alpha =0.05$

This implies that we fail to reject the null hypothesis at 5% level of significance.

Conclusion:

The null hypothesis was failed to be rejected at 5% level of significance.

Thus, concluding that the proportion of customers satisfied with the service they receive from the large electric utility company is different from 80%, the claim made by the CEO.

4 0

3 years ago

What inverse operation should be used to isolate the variable in the equation c ÷ 7 = 2?

Kobotan [32]

Answer:

C = 14

Step-by-step explanation:

14*7= 2

5 0

3 years ago

Find the location of A' given that A is (4,5). Translate 1 unit left. The location of A is

Nady [450]

Answer:

3,5

Step-by-step explanation:

You just move it to the left

8 0

3 years ago

What is the length of AC¯¯¯¯¯ ?

allsm [11]

X+4=3x-8, x =6, here u go

8 0

3 years ago

Read 2 more answers

Rob owns stock in dowc beverage co. and agram imports. he owns 86 more shares of agram imports, which pays a dividend of $5.15 p

salantis [7]

If Rob receives $4,585.75 in annual dividends, the number of shares of Agram Imports that Rob owns is D. 441 shares.

<h3>What is a dividend?</h3>

A dividend is the distribution of cash or stock that a company makes to its stockholders periodically.

Dividends are usually based on a dividend payout ratio, determined by the Board of Directors of the company.

<h3>Data and Calculations:</h3>

Dowc Beverage Co. Agram Imports

Dividend per share $6.52 $5.15

Number of shares x x+ 86

Number of shares 355 (441 - 86) 441 (355 + 86)

Total dividend received $2,314.60 ($4,585.75 - $2,271.15)) $2,271.15

which is equivalent to $2,314.60 ($355 x $6.52)

Assuming total shares from Agram Imports to be 441, the total dividends will be $2,271.15 ($5.15 x 441), and, the dividend from Dowc Beverage Co. will be $2,314.60 and the number of shares will be 355 ($2,314.60/$6.52), which is 86 less than the shares in Agram Imports.

Thus, if Rob receives $4,585.75 in annual dividends, the number of shares of Agram Imports that Rob owns is D. 441 shares.

Learn more about dividends at brainly.com/question/3161471

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3 0

2 years ago