Question

part B

The accompanying data represent the total travel tax (in dotars) for a 5-day business trip in Brandomly selected cities. A normal probability plot suggests the data could come from a population that is normally distributed Abowplot indicates there are no outers Complete parts (a) through (below 67 66 79 75 70 03 8443 3053 87.12 100.9898.63 Click the icon to view the table of crical values 3364 A point estimate for the population mean travel taxi (Round towe decimal places as needed) (b) Construct and interpreta 95% confidence interval for the mean lax paid for a three-day business trip Select the correct choice below and in the answer boxes to complete your choice Round to two decal places as needed) OA One can be confident that the mean travel tax for all cities is between and OB. One can be confident that the acties tave a travel tax between and OC. There is a probability that the mean travel tax for all cities is between and OD. The travel taxis between and or c hes

Answer 1

for the given data mean (x) = 83.64, S = 11.9732, n= 8 2 = 0.05 lois, df = I, t-cv-2.365 To find c. I we have formula ata from 83.64 4 (2:365) 11.9732 83.64 & 10.01 (73.63, 93.65) of one can be [as]% confident that the mean travel tax for all cities is between & (73.63] and $93.65]