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Question 310:

Various temperature measurements are recorded at different times for a particular day. the mean of 20 degrees C is obtained for 40 temperatures on 40 different days. Assuming that the standard deviation = 1.5 degree C, test the claim that the population mean is 22 degree C. Use a significance level of 0.05.
1. Identify null hypothesis
2. Identify alternate hypothesis
3.What is the test statistic?
4. Calculate the P-value
5. What is the conclusion regarding the null hypothesis
6. What is the final conclusion that addresses the original claim?

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