Help me plz

A population has a mean 70. A sample of 80 objects was taken, and was found to have a mean of 71.45 and standard deviation of 5. At a 1% level of significance, is there evidence the mean should increased? 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. Calculate with EXCEL only C) Is there enough evidence to reject the null hypothesis? ANSWER Y or N Blank # 1 Blank # 2 Blank # 3