the past 50 years (Twenge, 2000). In the 1950s, the average score on the Child Manifest Anxiety Scale was u = 15.1. A sample of n produces a mean score ofM = 23.3 with SS = 240. a. Based on the sample, has there been a significant change in the average level of anxiety since the 1950s? Use a two-tailed test with a = .01. 16 of today's children %3D b. Make a 90% confidence interval estimate of to- day's population mean level of anxiety. c. Write a sentence that demonstrates how the outcome of the hypothesis test and the confidence interval would appear in a research report.
the past 50 years (Twenge, 2000). In the 1950s, the average score on the Child Manifest Anxiety Scale was u = 15.1. A sample of n produces a mean score ofM = 23.3 with SS = 240. a. Based on the sample, has there been a significant change in the average level of anxiety since the 1950s? Use a two-tailed test with a = .01. 16 of today's children %3D b. Make a 90% confidence interval estimate of to- day's population mean level of anxiety. c. Write a sentence that demonstrates how the outcome of the hypothesis test and the confidence interval would appear in a research report.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Construct a 95% confidence interval *** not 90% please
Once built the 95%, explain what it means in a full sentence
Transcribed Image Text:the
past 50 years (Twenge, 2000). In the 1950s, the
average score on the Child Manifest Anxiety Scale
was u = 15.1. A sample of n
produces a mean score ofM = 23.3 with SS = 240.
a. Based on the sample, has there been a significant
change in the average level of anxiety since the
1950s? Use a two-tailed test with a = .01.
16 of today's children
%3D
b. Make a 90% confidence interval estimate of to-
day's population mean level of anxiety.
c. Write a sentence that demonstrates how the
outcome of the hypothesis test and the confidence
interval would appear in a research report.
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