Because of staffing decisions, managers of the Gibson-Marimont Hotel are interested in the variability in the number of rooms occupied per day during a particular season of the year. A sample of days of operation shows a sample mean of rooms occupied per day and a sample standard deviation of rooms. a. What is the point estimate of the population variance (to nearest whole number)? b. Provide a confidence interval estimate of the population variance (to nearest whole number). ( , ) c. Provide a confidence interval estimate of the population standard deviation (to 1 decima

a) 900

b)  567 1690

c) 23.8 41.1

Step-by-step explanation:

Complete Question

Because of staffing decisions, managers of the Gibson-Marimont Hotel are interested in the variability in the number of rooms occupied per day during a particular season of the year. A sample of 20 days of operation shows a sample mean of 290 rooms occupied per day and a sample standard deviation of 30 rooms.

a. What is the point estimate of the population variance (to nearest whole number)?

b. Provide a 90% confidence interval estimate of the population variance (to nearest whole number).

c. Provide a 90% confidence interval estimate of the population standard deviation (to 1 decimal).

Solution

a)  Point estimate of the population variance = Square of S = S^2

30^2 =900

b) Given

n = 20

s^2 = 900

(n-1)s^2/x 0.05 (n-1)s^2/x 0.95

Variation 567 1690

c) Standard Deviation

23.8 41.1

answdf

step-by-step explanation: bcuz d is right

dhdhth

step-by-step explanation: