Question: Exercise 8.108 presented statistics from a study of fast starts by ice hockey skaters. The mean and standard deviation of the 69 individual average acceleration

Exercise 8.108 presented statistics from a study of fast starts by ice hockey skaters. The mean and standard deviation of the 69 individual average acceleration measurements over the 6-meter distance were 2.962 and .529 meters per second, respectively.
a. Find a 95% confidence interval for this population mean. Interpret the interval.
b. Suppose you were dissatisfied with the width of this confidence interval and wanted to cut the interval in half by increasing the sample size. How many skaters (total) would have to be included in the study?

Step by Step Solution

★★★★★

3.48 Rating (171 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

a The approximate 95 confidence interval for is or 2837 3... View full answer

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Document Format (1 attachment)

879-M-S-S-D (3945).docx

120 KBs Word File

Students Have Also Explored These Related Statistics Questions!

In Exercise 2.101 on page 87, we discuss a study about the effect of heat from laptop computers on scrotum temperature in men. Heating the scrotum by just 1 ¦ C can reduce sperm count and...

From a study of consumer buying: The claim is = 0.21, and the sample statistics include n = 32, = 0.83, and s = 0.24. Find the value of the test statistic z.

From a study of the amounts of Moosehead Beer in cans: The claim is = 355, and the sample statistics include n = 36, = 360.6, and s = 3.3. Find the value of the test statistic z.

8.113 Ice Hockey II Exercise 8.112 presented sta- tistics from a study of fast starts by ice hockey skaters. The mean and standard deviation of the 69 individual average acceleration measurements...

15. Ice Hockey, continued Refer to Exercise 14. The mean and standard deviation of the 69 individual average acceleration measurements over the 6-meter distance were 2.962 and .529 meters per second,...

8B A researcher investigated some of the variables related to "fast starts," the acceleration and speed of a hockey player from a stopped position. Sixty-eight hockey players, varsity and intramural,...

A researcher investigated some of the variables related to "fast starts," the acceleration and speed of a hockey player from a stopped position. Sixtysix hockey players, varsity and intramural, from...

Hello, I havetwo articles about S Corp. and C Corp., and IJUST need towrite a conclusion paragraph based on professor's questions. can you help me to write it? Articles are attached Accounting...

Lecture Notes DL MGT 5100 - Distribution Management Spring 2017 1.0. Day one, Monday, Monday, 9 Jan 17 1.1. Reading Assignments: Chapters 1 and 2 1.1.1. I intend to follow the book so as to provide a...

A perfect heat pump supplies heat to a building so that the temperature is 27 C. The cold reservoir is river water at 7 C. What is the power delivered heat to the building if the electric power of...

If Laid Back wants to earn before tax profits equal to 20% of sales revenue, how many bundles would they have to sell? If Laid Back wants to earn after-tax profits equal to 20% of sales revenue, how...

For the sample space of Exercise 2.5, (a) list the elements corresponding to the event A that a number less than 3 occurs on the die; (b) list the elements corresponding to the event B that two tails...

A stationery store calculated the cost of price marking its merchandise to be $54,000 a year in employee time. The store estimates that it can save 33 percent of this cost by switching to source...

2.15 You are given n = 8 measurements: 4, 1, 3, 1, 3, 1, 2, 2. a. Find the range. b. Calculate x. c. Calculate s and s using the computing formula. d. Use the data entry method in your calculator to...

2.17 An Archeological Find An article in Archaeometry involved an analysis of 26 samples of Romano-British pottery found at four different

2.17 An Archeological Find An article in Archaeometry involved an analysis of 26 samples of Romano-British pottery found at four different kiln sites in the United Kingdom. The samples were analyzed...

1. It's lotto time! I! But instead of justtaking a sequence of numbers like normal, we care about the sum of the numbers in the sequence. You win big money if the sum of the 3 numbers is an even...

What is the driving force behind the discovery of the social determinants of health, or environmental factors, that influence health? This is also the basic science of public health that focuses on...

An introduction to how AI is transforming real time crime centers AI provides the ability to process and analyze vast quantities of data from multiple sources in real - time, aiding threat assessment...