subject
Mathematics, 11.03.2020 18:27 joejoefofana

The U. S. Census Bureau conducts a study to determine the time needed to complete the short form. The Bureau surveys 200 people. The sample mean is 8.2 minutes. There is a known standard deviation of 2.2 minutes. The population distribution is assumed to be normal. Construct a 90% confidence interval for the population mean time to complete the forms. State the confidence interval, sketch the graph, and calculate the error bound.

ansver
Answers: 1

Other questions on the subject: Mathematics

image
Mathematics, 21.06.2019 13:30, popt9710
Apath 3 m wide runs around the inside of a square park inside 60 m. find the area of the path. pls
Answers: 2
image
Mathematics, 22.06.2019 00:30, carriboneman
"which statement is necessarily true if bd is an altitude to the hypotenuse of right ? abc? a.) ? adb? ? bdc b.) ? adb~? bdc c.) abbc=acbd d.) ? bac? ? bdc"
Answers: 3
image
Mathematics, 22.06.2019 01:30, codyczajka
The host of a game show is holding a bag with chips to see what prizes the contestants will play for. five (5) of the chips say “new car” ten (10) of the chips say “new tv” three (3) of the chips say “trip to france” contestant named “patty” reaches into the bag. a. what is the probability of choosing a tv chip? b. what is the probability of choosing a car chip next without replacing the 1st chip? c. are these dependent or independent events?
Answers: 1
image
Mathematics, 22.06.2019 01:40, leylaanddade
Amass weighing 16 pounds stretches a spring 8/3 feet. the mass is initially released from rest from a point 2 feet below the equilibrium position, and the subsequent motion takes place in a medium that offers a damping force that is numerically equal to 1/2 the instantaneous velocity. find the equation of motion if the mass is driven by an external force equal to f(t)=cos(2t).
Answers: 2
You know the right answer?
The U. S. Census Bureau conducts a study to determine the time needed to complete the short form. Th...

Questions in other subjects: