For Exercises 6.51 and 6.52, see pages 320–321; for 6.53 to 6.55, see pages 323–324; for 6.56 to 6.59, see pages 325–326; for 6.60 to 6.62, see pages 328–329; for 6.63 and 6.64, see page 331; and for 6.65 and 6.66, see page 332.

Question 6.64

6.64 Can you reject the null hypothesis?

A 95% confidence interval for a population mean is (42,51).

  1. Can you reject the null hypothesis that at the 5% significance level? Why?
  2. Can you reject the null hypothesis that at the 5% significance level? Why?