A mobile company claims that the mean duration of all daytime phone calls made by its residential customers is 10 minutes. a random sample of 100 daytime calls made by its residential customers taken from the records of this company showed that the mean duration of calls for this sample is 9.20 minutes. the population standard deviation is known to be 3.80 minutes.
Find the p-value for the test that the mean duration of all long-distance calls made by residential customers is less than 10 minutes. If α = 0.1, based on the obtained p-value, would you reject the null hypothesis?
A. The null hypothesis will not be rejected.
B. The null hypothesis will be rejected.