Question

Asked Nov 28, 2019

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In a study of the accuracy of fast food drive-through orders, McDonald’s had

33 orders that were not accurate among 362 orders observed. Use a 0.05

significance level to test the claim that the proportion of inaccurate orders is

equal to 10%.

A: Write the claim as a mathematical statement involving the population

proportion ?.

B: State the null (?0) and alternative (??) hypotheses.

C: Find the test statistic (?????) for the given sample.

D: Find the critical value(s) OR the P-value for the given test.

E: Would you Reject or Fail to Reject the null (?0) hypothesis.

F: Write the conclusion of the test.

Step 1

(A)

Here, the claim of the test is the proportion of inaccurate orders is

equal to 10%. This is representing in null hypothesis and denoted as p=010. The alternative hypothesis is that the proportion of inaccurate orders is not equal to 10% and denoted as p≠010.

Hence, the mathematical statement involving the population

proportion is **p=010 and p≠010**.

(B)

The test hypotheses are given below:

Step 2

(C)

The sample proportion is,

Step 3

The test statistic is **–0.01** and o...

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