Mathematics, 05.05.2020 05:08 thedocgalloway

A student researcher compares the heights of men and women from the student body of a certain college in order to estimate the difference in their mean heights. A random sample of 13 men had a mean height of 69.4 inches with a standard deviation of 2.02 inches. A random sample of 8 women had a mean height of 62.8 inches with a standard deviation of 2.93 inches. Determine the 95% confidence interval for the true mean difference between the mean height of the men and the mean height of the women. Assume that the population variances are equal and that the two populations are normally distributed. Step 1 of 3 : Find the critical value that should be used in constructing the confidence interval. Round your answer to three decimal places.

Answers: 3

Show answers

Another question on Mathematics

Mathematics, 21.06.2019 13:10

What can be said about the relationship between triangles and circles? check all that apply. a) many circles can be inscribed in a given triangle b) exactly one triangle can be inscribed in a given circle c) exactly one circle can be inscribed in a given triangle d) many triangular shapes can be circumscribed about a given circle

Answers: 1

Answer

Mathematics, 21.06.2019 13:30

Malia is observing the velocity of a cyclist at different times. after two hours, the velocity of the cyclist is 15 km/h. after five hours, the velocity of the cyclist is 12 km/h. part a: write an equation in two variables in the standard form that can be used to describe the velocity of the cyclist at different times. show your work and define the variables used. (5 points) part b: how can you graph the equations obtained in part a for the first 12 hours? (5 points) if you can try and make this as little confusing as you can

Answers: 2

Answer

Mathematics, 21.06.2019 17:30

Which expression will have the same sum as 3_8 + 1/4?

Answers: 1

Answer

Mathematics, 21.06.2019 18:30

Afarm that has 4 x 10^2 acres has 1.2 x 10^5 cattle. what is the average number of cattle per acre? write the answer in scientific notation. answere asap

Answers: 2

Answer

You know the right answer?

A student researcher compares the heights of men and women from the student body of a certain colleg...

Questions