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# Hypothesis Testing of Mean

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Please solve the exercise below in Excel and show your work and formulas used.

The average waiting time per customer at a fast food restaurant has been 7.5 minutes. The customer waiting time has a normal distribution. The manager claims that the use of a new cashier system will decrease the average customer waiting time in the store. Based on a random sample of 16 customer transactions the mean waiting time is 6.3 minutes and the standard deviation is 2 minutes per customer. Test the manager's claim at 5% and 1% significance level tests.

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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.

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Statistics exercise 6
Please solve the exercise below in Excel and show your work and formulas used.

The average waiting time per customer at a fast food restaurant has been 7.5 minutes. The customer waiting time has a normal distribution. The manager claims that the use of a new cashier system will decrease the average customer waiting time in the store. Based on a random sample of 16 customer transactions the mean waiting time is 6.3 minutes and the standard deviation is 2 minutes per customer. Test the manager's claim at 5% and 1% significance level tests.
When significance level, α = 5%
The null hypothesis tested is
H0: Average customer waiting time in the store ≥ 7.5 minutes (µ ≥ 7.5)
The alternative hypothesis is ...

##### Terms and Definitions for Statistics

This quiz covers basic terms and definitions of statistics.