A researcher claims that iced coffee bottle contains less than 410 millilitres of coffee. Previous studies...
A researcher claims that iced coffee bottle contains less than 410 millilitres of coffee. Previous studies show a population standard deviation of 30 millilitres. The test statistic using a sample of 36 bottles with a mean of 400 millilitres is
Homework Answers
solution:
Test statistic = z
= (
- 
) / 
/ 
n
= (400-410) / 30 /
36
test statistic z = -2
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A researcher claims that iced coffee bottle contains less than
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