Question

A. 19A telecommunications company wants to estimate the proportion of households that would purchase an additional telephone line if it were made available at a substantially reduced installation cost. Data are collected from a random sample of

500

households. The results indicate that

110

of the households would purchase the additional telephone line at a reduced installation cost.

Construct a

99%

confidence interval estimate for the population proportion of households that would purchase the additional telephone line.

nothingless than or equals≤piπless than or equals≤nothing

​(Round to four decimal places as​ needed

B.The table below contains the overall miles per gallon​ (MPG) of a type of vehicle.

29

30

35

25

34

23

31

24

25

22

36

23

24

23

Construct a

99%

confidence interval estimate for the population mean MPG for this type of​ vehicle, assuming a normal distribution.The

99%

confidence interval estimate is from

nothing

MPG to

nothing

MPG.

Answer 1