2
(Choose
1 answer)
(Seepicture)
A. 1.57
B. None of the other choice is correct
C. 1.26
D. 1.96
E. 1.99
Various temperature measurements are recorded at different times for a particular city. The mean of 32°C and the standard deviation of 5°C is obtained for 40 temperatures on 40 different days. Find the test statistic to test the claim that the population mean is 31°C, using a 0.05 significance level.
Let
Z0.025 1.96, to.025,39=2.02
