Question

In: Statistics and Probability

You have a dataset of the average number of chirps per minute for a sample of...

You have a dataset of the average number of chirps per minute for a sample of 30 crickets. You find that the mean number of chirps per minute is 40 and that the number of chirps per minute has a standard deviation of 5 chirps. You want to test that the mean number of chirps per minute for a cricket is greater than 38 using a significance level of .05. What is the value of your test statistic? Round your answer to two decimal places.

Solutions

Expert Solution

Solution-

We have given that

Population mean = 38

Sample size = 30

Sample Mean = 40

Sample standard deviation = 5

Significance level = 0.05

Test Statistic = 2.19 ........(rounded to 2 decimals)

  • Step by step test calculation

By above test result

Null hypothesis is rejected.

we have enough evidence to claim that mean number of chirps per minute for a cricket is greater than 38.

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