Answer the following questions please Question 8 10 points I

Answer the following questions please

Question 8 (10 points) If the standard deviation of the number of condiments in people\'s refrigerators is 19.50, what is the variance? Report to 2 decimal places. Your Answer: Answer Save

Solution

8.) variance=(standard deviation)²=19.5²=380.25

9.) standard deviation=6 since standard deviation does not depend on change of origin.

10.)mean=46.4,standrad deviation=17.1184

upper end of the range=mean+2*sd=80.6368

lower end of the range=mean-2*sd=12.1632

9 fall within the range.

10.ans> 9