An insurance company, based on past experience, estimates the mean damage for a natural disaster in its area is $5000. After introducing plans to prevent loss it randomly samples 200 policy holders. From the 200 samples, it nds the sample mean amount per claim was $4800 with a sample standard deviation of $1300. Does it appear that prevention plans were effective in reducing the mean? Use a 0.05 level of significance. Question 4: We will Reject Ho if the calculated statistic 0 Larger than 1.96 or smaller than -1.96 O greater than 4/652 0 less than -1.645 O is less than -1 .652