Mathematics, 28.01.2021 22:20 destinyhammons12345

A large school district held a district-wide track meet for all high school students. For the 2-mile run, the population of female students participating had a mean running time of 8.8 minutes with standard deviation of 3.3 minutes, and the population of male students participating had a mean running time 7.3 minutes with standard deviation of 2.9 minutes. Suppose 8 female students and 8 male students who participated in the 2-mile run are selected at random from each population. Let x¯F represent the sample mean running time for the female students, and let x¯M represent the sample mean running time for the male students. What are the mean and standard deviation of the sampling distribution of the difference in sample means x¯F−x¯M ?

Answers: 2

Show answers

Another question on Mathematics

Mathematics, 21.06.2019 17:20

The function a represents the cost of manufacturing product a, in hundreds of dollars, and the function b represents the cost of manufacturing product b, in hundreds of dollars. a(t) = 5t + 2 b(t) = 7t - 2t +4 find the expression that describes the total cost of manufacturing both products, a(t) + b(t). a. 7t^2 - 7t + 2 b. 7t^2 + 3 +6 c. 7t^2 + 7t - 6 d. 7t^2 - 3t + 6

Answers: 3

Answer

Mathematics, 22.06.2019 00:00

Maci and i are making a small kite. two sides are 10". two sides are 5". the shorter diagonal is 6". round all your answers to the nearest tenth. 1. what is the distance from the peak of the kite to the intersection of the diagonals? 2. what is the distance from intersection of the diagonals to the top of the tail? 3. what is the length of the longer diagonal?

Answers: 3

Answer

Mathematics, 22.06.2019 00:30

The mean average cost of standard room per night at a hostel is ? 20.60. therefore, how much does a standard room cost per night at night-time rest days?

Answers: 1

Answer

Mathematics, 22.06.2019 03:00

Can you make 1000, using only eight 8’s? if you had your choice, would you rather have 5 million dollars, or 1 penny, doubled every day for a month?

Answers: 2

Answer

You know the right answer?

A large school district held a district-wide track meet for all high school students. For the 2-mile...

Questions

Mathematics, 26.08.2021 01:00

On 4. The length of a book (in pages) is a function of the number of words in the book. This function is written (w). What is true about...

Mathematics, 26.08.2021 01:00