A population has a mean 50. A sample of 70 objects was taken, and was found to have a mean of 48.2 and standard deviation of 6.37. At a 2% level of significance, is there evidence the mean should decreased?

A) What type of test is this (left-tailed, right-tailed, or two-tailed)? ANSWER: L or R or 2

B) Calculate the p-value. ANSWER to 4 decimals. Calaculate with EXCEL only

C) Is there enough evidence to reject the null hypothesis? ANSWER Y or N