4. (15 pts) Suppose from a sample of 40 items: x = 70 and the population standard deviation is known, σ = 5.2. a) Construct a 95% confidence interval. Note, you must use the "by hand" method. Must show all calculations. Do NOT use the "Z-Interval" stat function on calculator. Find the MOE and then use it to construct the interval. b) Interpret the meaning of this confidence interval.
4. (15 pts) Suppose from a sample of 40 items: x = 70 and the population standard deviation is known, σ = 5.2. a) Construct a 95% confidence interval. Note, you must use the "by hand" method. Must show all calculations. Do NOT use the "Z-Interval" stat function on calculator. Find the MOE and then use it to construct the interval. b) Interpret the meaning of this confidence interval.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 1GP
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Transcribed Image Text:4. (15 pts) Suppose from a sample of 40 items: x = 70 and the population standard deviation is known, σ = 5.2.
a) Construct a 95% confidence interval.
Note, you must use the "by hand" method. Must show all calculations.
Do NOT use the "Z-Interval" stat function on calculator. Find the MOE and then use it to construct the interval.
b) Interpret the meaning of this confidence interval.
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