SOLUTION: The mean height of women in a country​ (ages 20minus​29) is 63.6 inches. A random sample of 75 women in this age group is selected. What is the probability that the mea
Algebra ->
Probability-and-statistics
-> SOLUTION: The mean height of women in a country​ (ages 20minus​29) is 63.6 inches. A random sample of 75 women in this age group is selected. What is the probability that the mea
Log On
Question 1117999: The mean height of women in a country (ages 20minus29) is 63.6 inches. A random sample of 75 women in this age group is selected. What is the probability that the mean height for the sample is greater than 64 inches? Assume sigmaequals2.98.
The probability that the mean height for the sample is greater than 64 inches is? Answer by Boreal(15235) (Show Source):
You can put this solution on YOUR website! Assuming we know sigma, this is a z-test
z(x-xbar)/sigma/sqrt(n)
z=(64-63.6)/2.98/sqrt(75)
This is 0.4*sqrt(75)/2.98=1.16
That probability is 0.1230
