The living spaces of all homes in a city have a mean of 2500 square feet and a standard deviation of 360 square feet. Let x¯ be the mean living space for a random sample of 20 homes selected from this city.
Find the mean of the sampling distribution of x¯.
Enter an exact answer.
mean of x¯= square feet
Find the standard deviation of the sampling distribution of x¯.
Round your answer to one decimal place.
standard deviation of x¯= square feet
Solution :
Given that ,
mean = = 2500
standard deviation = = 360
n = 20
mean of the sampling distribution of x¯
= = 2500
standard deviation of the sampling distribution of x¯.
= / n = 360/ 20=80.5
Get Answers For Free
Most questions answered within 1 hours.