The null and alternative obtained respectively

H0: = $57.61

Ha: $57.61

Where is this year's mean retail price of agriculture book.

= 8.45

= 0.10

n = 28

a.Find the critical value using appropriate distribution table

b.Calculate the respective and suitable test.

c.Construct the critical region and make your decision to whether accept or reject Ho

d.Construct 96% confidence interval for population mean.