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Tcecarenko [31]
3 years ago
5

A restaurant manager asks all of the customers this month to take an online survey (and get a free appetizer their next visit).

It turns out that 241 customers actually take the survey, and of these 209 were "extremely satisfied" with their visit. Set up an approximate 95% confidence interval for the proportion of all the restaurant's customers that say they were "extremely satisfied' with their visit. Select only one of the boxes below. A. The Normal curve cannot be used to make the requested confidence interval. B. Making the requested confidence interval does not make any sense. C. It is appropriate to compute a confidence interval for this problem using the Normal curve. If it is appropriate to compute a confidence interval for this problem using the Normal curve, then enter the confidence interval below. Otherwise, enter (0,0 for the confidence interval. [0.82 0.91].
Mathematics
1 answer:
padilas [110]3 years ago
4 0

Answer:

Which is the output of the formula =AND(12>6;6>3;3>9)?

A.

TRUE

B.

FALSE

C.

12

D.

9

Step-by-step explanation:

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A study by Consumer Reports showed that 64% of supermarket shoppers believe supermarket brands to be as good as national name br
Marianna [84]

Answer:

<em>The calculated value  |Z| = |-2.5| >2.326 at 0.05 level of significance</em>

<em>The alternative hypothesis is accepted at a 0.05 level of significance</em>

The manager of  Publix in Clemson believes 64% is too high for his own store

Step-by-step explanation:

<u><em>Step:-1</em></u>

Given that the consumer Reports showed that 64% of supermarket shoppers.

Given that the population proportion

                                 P = 0.64

Given that random sample size 'n' = 100

Given that 52 believe the supermarket brands were as good as the national brands.

<em>sample proportion</em>

<em>                           </em>p^{-} = \frac{x}{n} = \frac{52}{100} = 0.52<em></em>

<u><em>Step:-2</em></u>

<u><em>Null hypothesis: </em></u>The manager of the Publix in Clemson believes 64% is too low for his own store

μ < 0.64

<u><em>Alternative Hypothesis:H₁:</em></u>μ > 0.64

Test statistic

               Z = \frac{p-P}{\sqrt{\frac{PQ}{n} } }

               Z = \frac{0.52-0.64}{\sqrt{\frac{0.64 X 0.36}{100} } }

              Z =  -2.5

<em>Level of significance = 0.05</em>

<em>Z₀.₀₅ = 2.326</em>

<em>The calculated value  |Z| = |-2.5| >2.326 at 0.05 level of significance</em>

<u><em>Final answer</em></u><em>:-</em>

<em>The null hypothesis is rejected at a 0.05 level of significance</em>

<em>The alternative hypothesis is accepted at a 0.05 level of significance</em>

3 0
3 years ago
One half of a number is 8 less than the number itself
mamaluj [8]
The question is a little vague but I believe the answer would be 16. 16 divided in half is 8. And that is 8 less than 16. < Not the answer for this question.

I didn't understand the question until Maria answered, she is completely right! Sorry for the misunderstanding.
6 0
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Norma-Jean [14]

Answer:

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Step-by-step explanation:

3 0
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I don’t understand this pls help!!!
Luba_88 [7]
The exponent value would be 3
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66 dollars is fifteen % of what amount
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66 is 15% of what amount....
66 = 0.15x
66/0.15 = x
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