Purchase Solution

# Hypothesis Testing of Waiting Times at Fast-Food Chains

Not what you're looking for?

The waiting time to place an order at a branch of a fast-food chain during the lunch hour has had population mean of 3.55 minutes, with a population standard deviation of 1.1 minute. Recently, in an effort to reduce the waiting time, the branch has experimented with a system in which there is a single waiting line. A sample of 100 customers during a recent lunch hour was selected, and their mean waiting time to place an order was 3.18 minutes. Assume that the population standard deviation of the waiting time has not changed from 1.1 minutes.

a. At the 0.05 level of significance, using the critical value approach to hypothesis testing, is there evidence that the population mean waiting time to place an order is less than 3.55 minutes?

b. At the 0.05 level of significance, using the p-value approach to hypothesis testing, is there evidence that the population mean waiting time to place an order is less than 3.55 minutes?

c. Interpret the meaning of the p-value in this problem.

d. Compare your conclusion in (a) and (b).

##### Solution Summary

This solution conducts a statistical analysis on the mean waiting times at a fast-food chain by presenting the null and alternative hypothesis, calculating the test statistic and comparing it to the p-value. A decision is made to accept or reject the null hypothesis. It also explains the p-value and compares the two hypothesis testing conditions.

##### Free BrainMass Quizzes

Each question is a choice-summary multiple choice question that presents you with a statistical concept and then 4 numbered statements. You must decide which (if any) of the numbered statements is/are true as they relate to the statistical concept.

##### Measures of Central Tendency

This quiz evaluates the students understanding of the measures of central tendency seen in statistics. This quiz is specifically designed to incorporate the measures of central tendency as they relate to psychological research.

##### Measures of Central Tendency

Tests knowledge of the three main measures of central tendency, including some simple calculation questions.

##### Terms and Definitions for Statistics

This quiz covers basic terms and definitions of statistics.