Suppose the coffee industry claimed that the average adult drinks1.7 cups of cof

Question

Suppose the coffee industry claimed that the average adult drinks1.7 cups of coffee per day. To test this claim, a random sample of40adults was selected, and their average coffee consumption was found to be1.95 cups per day. Assume the standard deviation of daily coffee consumption per day is0.6 cups. Usingalphaequals=0.05 complete parts a and b below.

a. Is the coffee industry's claim supported by this sample?

Determine the null and alternative hypotheses.

Upper H 0H0:

mu

less than<

not equals

less than or equals

greater than>

equals=

greater than or equals

nothing

Upper H 1H1:

mu

less than or equals

greater than or equals

equals=

greater than>

not equals

less than<

nothing

Explanation / Answer

a) null hypothesis :Upper H0: : equals= 1.70

alternate hypothesis: Upper H 1H1: : not equals 1.70

b) please revert for part b as it is not mentioned here

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