Question 14
From previous data, we know that the annual rainfall, X in a particular region is normally distributed with E(X) = 998 mm. In recent years, due to various climate changes, it is hypothesized that in fact, the annual rainfall has decreased. Let us assume that the rainfall (in mm) registered in the past 8 years are as follows:
650, 802, 1198, 780, 850, 1150, 1200, 690.
Based on the above data, answer the given subquestions.
Reject the null hypothesis.
Fail to reject the null hypothesis.