The mean scores of a random sample of 17 students who took a special test is 83.5. If the standard deviation of the scores is 4.1 and the sample comes from an approximately normal population, find the point and the interval estimate of the population mean adopting a confidence level of 95%. a. 83.5; 81.39 - 85.61 b. 83.5; 83.19 - 86.51 c. 83.5; 81.93 - 85.61 d. 83.5; 81.39 - 85.16

The mean scores of a random sample of 17 students who took a special test is 83.5. If the standard deviation of the scores is 4.1 and the sample comes from an approximately normal population, find the point and the interval estimate of the population mean adopting a confidence level of 95%. a. 83.5; 81.39 - 85.61 b. 83.5; 83.19 - 86.51 c. 83.5; 81.93 - 85.61 d. 83.5; 81.39 - 85.16

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.5: Comparing Sets Of Data

Problem 13PPS

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Question

The mean scores of a random sample of 17 students who took a special test is 83.5. If the standard deviation of the scores is 4.1 and the sample comes from an approximately normal population, find the point and the interval estimate of the population mean adopting a confidence level of 95%.

a. 83.5; 81.39 - 85.61
b. 83.5; 83.19 - 86.51
c. 83.5; 81.93 - 85.61
d. 83.5; 81.39 - 85.16

Definition Definition Method in statistics by which an observation’s uncertainty can be quantified. The main use of interval estimating is for describing a range that is made by transforming a point estimate by determining the range of values, or interval within which the population parameter is likely to fall. This range helps in measuring its precision.

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