# Hypothesis Testing of Population Proportion

Chicken Delight claims that 86 percent of its orders are delivered within 10 minutes of the time the order is placed. A sample of 80 orders revealed that 81 percent were delivered within the promised time. At the .10 significance level, can we conclude that less than 86 percent of the orders are delivered in less than 10 minutes?

(a) What is your decision regarding the below hypothesis?

(Click to select)RejectCannot reject H0 : Ï? â?¥ .86

(b) Compute the value of the test statistic. (Round your answer to 2 decimal places.)

Value of the test statistic

https://brainmass.com/statistics/hypothesis-testing/hypothesis-testing-population-proportion-387494

#### Solution Preview

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Chicken Delight claims that 86 percent of its orders are delivered within 10 minutes of the time the order is placed. A sample of 80 orders revealed that 81 percent were delivered within the promised time. At the .10 significance level, can we conclude that less than 86 percent of the orders are delivered in less than 10 minutes?

Answers

(a) What is your decision regarding the below hypothesis?

(Click to ...

#### Solution Summary

The solution provides step by step method for the calculation of testing of hypothesis. Formula for the calculation and Interpretations of the results are also included. Interactive excel sheet is included. The user can edit the inputs and obtain the complete results for a new set of data.