Mathematics
Mathematics, 12.05.2020 17:57, earcake2470

Child Health and Development Studies (CHDS) has been collecting data about expectant mothers in Oakland, CA since 1959. One of the measurements taken by CHDS is the weight increase (in pounds) for expectant mothers in the second trimester. In a fictitious study, suppose that CHDS finds the average weight increase in the second trimester is 14 pounds. Suppose also that, in 2015, a random sample of 40 expectant mothers have mean weight increase of 16 pounds in the second trimester, with a standard deviation of 6 pounds. At the 5% significance level, we can conduct a one-sided T-test to see if the mean weight increase in 2015 is greater than 14 pounds. Statistical software tells us that the p-value= 0.021.

Which of the following is the most appropriate conclusion?

A. There is a 2.1% chance that a random sample of 40 expectant mothers will have a mean weight increase of 16 pounds or greater if the mean second trimester weight gain for all expectant mothers is 14 pounds
B. There is a 2.1% chance that mean second trimester weight gain for all expectant mothers is 14 pounds in 2015
C. There is a 2.1% chance that mean second trimester weight gain for all expectant mothers is 16 pounds in 2015
D. There is 2.1% chance that the population of expectant mothers will have a mean weight increase of 16 pounds or greater in 2015 if the mean second trimester weight gain for all expectant mothers was 14 pounds in 1959.

answer
Answers: 1

Other questions on the subject: Mathematics

image
Mathematics, 21.06.2019 17:10, ritiguda
How many lines can be drawn through points j and k? 0 1 2 3
Answers: 2
image
Mathematics, 21.06.2019 20:00, munch1239
Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. x^2 - 4x - 5 = 0
Answers: 2
image
Mathematics, 21.06.2019 21:30, thompsonmark0616
Find the domain and range of the following function f(x) = 51x - 21+ 4
Answers: 2
image
Mathematics, 21.06.2019 22:00, Ezonthekid
What is the value of the discriminant of the quadratic equation -2x = -8x + 8 and what does its value mean about thenumber of real number solutions the equation has?
Answers: 3
Do you know the correct answer?
Child Health and Development Studies (CHDS) has been collecting data about expectant mothers in Oakl...

Questions in other subjects: