Construct a 90% confidence interval to estimate the population mean using the data below. What assumptions need to be made about this population? x=38 s=9.9 n=24 Click here to view page 1 of the critical t-score table.

Construct a 90% confidence interval to estimate the population mean using the data below. What assumptions need to be made about this population? x=38 s=9.9 n=24 Click here to view page 1 of the critical t-score table.

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

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.3: Measures Of Spread

Problem 26PFA

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Question

Construct a 90% confidence interval to estimate the population mean using the data below. What assumptions need to be made about this population?

x=38

s=9.9

n=24

Click here to view page 1 of the critical t-score table.

Click here to view page 2 of the critical t-score table.

Question content area bottom

Part 1

The 90%confidence interval for the population mean is from a lower limit of here to an upper limit of

(Round to two decimal places as needed.)

Part 2

What assumptions need to be made about this population?

A. The population distribution is skewed to one side.

B. The population size is larger than 30.

C. The population follows the Student's t-distribution.

D. The population follows the normal probability distribution.

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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