In Country A, the population mean height for 10-year-old girls is 54.9 inches with a standard deviation of 2.3 inches.
Posted: Mon May 09, 2022 11:57 am
In Country A, the population mean height
for 10-year-old girls is 54.9 inches with a standard
deviation of 2.3 inches. Suppose a random sample of
15 10-year-old girls from Country B is taken and that these
girls had a sample mean height of 53.7 inches with a standard
deviation of 2.5 inches. Assume that heights are Normally
distributed. Complete parts (a) through (c) below.
Find t statistic
Find p value
Now suppose the sample consists of 50 girls instead of 15.
Repeat the test.
Find t statistic
Find p value
for 10-year-old girls is 54.9 inches with a standard
deviation of 2.3 inches. Suppose a random sample of
15 10-year-old girls from Country B is taken and that these
girls had a sample mean height of 53.7 inches with a standard
deviation of 2.5 inches. Assume that heights are Normally
distributed. Complete parts (a) through (c) below.
Find t statistic
Find p value
Now suppose the sample consists of 50 girls instead of 15.
Repeat the test.
Find t statistic
Find p value