Average SHS annual cost of tuition fee for all private school last year was P46, 300. A random sample of costs this year for 45 private schools indicated that the sample mean was P47,800 and a sample SD was P5,600. at 0.10 level of significance, is there a sufficient evidence to conclude that the cost increase?

a. What test statistics is applicable based on the given problem?

b. What is the null hypothesis?

c. What is the alternative hypothesis?

d. critical value?

e. z computed

f. Decision Rule: (reject the null hypothesis OR failed to reject null hypothesis)