What is a point estimate for the population mean length of time. (Round answer to 4 decimal laces) . Which distribution should you use for this problem? O normal distribution Otdistribution

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
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Chapter10: Statistics
Section10.5: Comparing Sets Of Data
Problem 26PFA
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Suppose you are a researcher in a hospital. You are experimenting with a new tranquilizer. You
collect data from a random sample of 11 patients. The period of effectiveness of the tranquilizer for
each patient (in hours) is as follows:
2.8
2.6
3.
2.2
2.1
2.6
2.7
3
2.3
2.3
a. What is a point estimate for the population mean length of time. (Round answer to 4 decimal
places)
b. Which distribution should you use for this problem?
O normal distribution
Ot-distribution
c. Why?
d. What must be true in order to construct a confidence interval in this situation?
O The population mean must be known
O The population standard deviation must be known
O The population must be approximately normal
O The sample size must be greater than 30
Type here to search
近
Transcribed Image Text:Suppose you are a researcher in a hospital. You are experimenting with a new tranquilizer. You collect data from a random sample of 11 patients. The period of effectiveness of the tranquilizer for each patient (in hours) is as follows: 2.8 2.6 3. 2.2 2.1 2.6 2.7 3 2.3 2.3 a. What is a point estimate for the population mean length of time. (Round answer to 4 decimal places) b. Which distribution should you use for this problem? O normal distribution Ot-distribution c. Why? d. What must be true in order to construct a confidence interval in this situation? O The population mean must be known O The population standard deviation must be known O The population must be approximately normal O The sample size must be greater than 30 Type here to search 近
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