subject
Mathematics, 26.11.2019 06:31 genaro19

Psychologist obtains a random sample of 20 mothers in the first trimester of their pregnancy. the mothers are asked to play mozart in the house at least 30 minutes each day until they give birth. after 5 years, the child is administered an iq test. it is known that iqs are normally distributed with a mean of 100. if the iqs of the 20 children in the study result in a sample mean of 104.1 and sample standard deviation of 15, is there evidence that the children have higher iqs? use the a=0.05 level of significance. complete parts (a) through (d).b) calulate the p-value. p-value+ to three decimal places as needed. c) state the conclusion for the test. choose the correct anser below. a. do not reject h0 becasue the p-value is less than the a-0.05 level of significanceb. reject h0 because the p-value is greater than the a=0.05 level of significancec. do not reject h0 because the p-value is less than the a-0.05 level of signifcance. d. reject h0 because the p-value is less than the a=0.05 level of significance. d) state the conclusion in context of the problem. there ( evidence at the a=0.05 level of significance to conclude that mothers who listen to mozart have children with hogher iqs.(

ansver
Answers: 1

Other questions on the subject: Mathematics

image
Mathematics, 21.06.2019 15:30, squawk1738
Given the box plot, will the mean or the median provide a better description of the center? box plot with min at 10.5, q1 at 11.5, median at 12.5, q3 at 13.5, max at 15
Answers: 2
image
Mathematics, 21.06.2019 17:00, uuuugggghhhh2463
At the beginning of the day, stock xyz opened at $6.12. at the end of the day, it closed at $6.88. what is the rate of change of stock xyz? a. 1.17% b. 11.0% c. 12.4% d. 81.5%
Answers: 1
image
Mathematics, 21.06.2019 18:20, dondre54
F(n + 1) = f(n) – 8. if f(1) = 100, what is f(6)?
Answers: 1
image
Mathematics, 21.06.2019 18:30, zovav1oszg9z
Analyze the graph of the cube root function shown on the right to determine the transformations of the parent function. then, determine the values of a, h, and k in the general equation.
Answers: 1
You know the right answer?
Psychologist obtains a random sample of 20 mothers in the first trimester of their pregnancy. the mo...

Questions in other subjects:

Konu
Mathematics, 26.05.2020 02:04
Konu
Mathematics, 26.05.2020 02:04
Konu
Mathematics, 26.05.2020 02:04
Konu
Mathematics, 26.05.2020 02:04