In a random sample of 90 students in first grade, the mean hours of sleep per night was 9.2 with a standard deviation of 0.37. In a random sample of 70 students in 12th grade, the mean hours of sleep per night was 7.3 with a standard deviation of 0.58. Construct a 99% confidence interval for the difference between the mean hours of sleep.
Answers (1)
Know the Answer?
Not Sure About the Answer?
Find an answer to your question ✅ “In a random sample of 90 students in first grade, the mean hours of sleep per night was 9.2 with a standard deviation of 0.37. In a random ...” in 📘 Mathematics if you're in doubt about the correctness of the answers or there's no answer, then try to use the smart search and find answers to the similar questions.
Search for Other Answers
You Might be Interested in
What is the minimum sample size, n, that he needs in order to meet these requirements? Complete the statements The value of 3% represents the A political analyst conducted a preliminary poll of randomly selected business workers.
Answers (2)
A rectangular solar panel has a length that is 11 inches shorter than 4 times the width. If the perimeter of the panel is 198 inches, what are the dimensions of the panel
Answers (1)
You are an athletic director and have a budget of $7,000 for uniforms. You can buy Top Flight uniforms for $125 each, and Bargain uniforms for 75$ each.
Answers (2)
Question 1 What is - 12:2/3 Question 2 What is - 8/3:7/12 Question 3 Divide. 8.64: (-0.27) Question 4 Starting at sea level, a submarine descended at a constant rate to a depth of - 3/4 mile relative to sea level in 5 minutes.
Answers (1)
10. The numbers - 12, - 7, - 2, 3 ... follow a pattern. What are the next three numbers in this pattern? 7, 11, 16 5, 10, 15 2, 7, 12 8, 13, 18
Answers (1)
New Questions in Mathematics
The container that holds the water for the football team is 1/2 full. After pouring in 2 gallons of water, it is 2/3 full. How many gallons can the container hold?
Answers (1)
There are 34 people going on a field trip. if each car holds 4 people. how many cars will we need?
Answers (1)
An office building has 32 office on its eight floors. How many offices are on each floor? Wirte a multiplication number model to represent the problem Write a division number model to represent the problem Slove the problem Draw a visual model
Answers (1)
Sam raked 16 bags of leafs in 8 hours. If he worked at a constant rate, how long did it take him to rake 3 bags
Answers (2)
the unit price for sninach is 3.2 cents per ounce at that price how much would 1 pound of spanach cost (round off the answer to the nearest cent
Answers (1)