Suppose the mean height of women age 20 years or older in a certain country is 62.6 inches. One hundred randomly selecte
Posted: Mon Nov 15, 2021 10:56 am
Suppose the mean height of women age 20 years or older in a
certain country is
62.6
inches. One hundred randomly selected women in a certain city
had a mean height of
64.0
inches. At the
1%
significance level, do the data provide sufficient
evidence to conclude that the mean height of women in the city
differs from the national mean? Assume that the population
standard deviation of the heights of women in the city is
4.3
inches.
Set up the hypotheses for the one-mean z-test.
H0
Ha?
test statistic?
Critical value?
P value?
Rejct or No?
certain country is
62.6
inches. One hundred randomly selected women in a certain city
had a mean height of
64.0
inches. At the
1%
significance level, do the data provide sufficient
evidence to conclude that the mean height of women in the city
differs from the national mean? Assume that the population
standard deviation of the heights of women in the city is
4.3
inches.
Set up the hypotheses for the one-mean z-test.
H0
Ha?
test statistic?
Critical value?
P value?
Rejct or No?