Cigarette SmokingA researcher found that a cigarette smoker smokes on average

34

cigarettes a day. She feels that this average is too high. She selected a random sample of11

smokers and found that the mean number of cigarettes they smoked per day was28

.The sample standard deviation was2.6

.At=

0.01

,is there enough evidence to support her claim? Assume that the population is approximately normally distributed. Use the critical value method and tables.

Part:0 / 5

0 of 5 Parts Complete

Part 1 of 5

(a)State the hypotheses and identify the claim.

:

H

0

(Choose one)

:

H

1

(Choose one)

This hypothesis test is a

(Choose one)

test.