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Given the R software output below, interpret the 90% confidence interval about the true mean wing length of common houseflies. 90 percent confidence interval: 3.309466 4.330534 Given the R software output below, is there sufficient evidence to say that the mean wing length of common houseflies is not equal to 4.55 cm, at 5% level of significance? Explain briefly. 95 percent confidence interval: 3.198311 4.441689 What happened to the confidence interval after increasing the confidence level? Give the width of the 90% and 95% confidence intervals.

Given the R software output below, interpret the 90% confidence interval about the true mean wing length of common houseflies. 90 percent confidence interval: 3.309466 4.330534 Given the R software output below, is there sufficient evidence to say that the mean wing length of common houseflies is not equal to 4.55 cm, at 5% level of significance? Explain briefly. 95 percent confidence interval: 3.198311 4.441689 What happened to the confidence interval after increasing the confidence level? Give the width of the 90% and 95% confidence intervals.

MATLAB: An Introduction with Applications
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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Given the data given, answer questions 1-3. Show solution during computation

Musca domestica L. or common houseflies have wing lengths that are found to be normally distributed. To verify this, a Filipino biometrician measured the wing lengths (in cm) of 15 random houseflies in a certain area and the following data were obtained: 1.7 2.5 2.6 2.8 3.3 3.6 3.7 3.7 3.9 4.1 4.7 4.8 5.1 5.2 5.6 1. Given the R software output below, interpret the 90% confidence interval about the true mean wing length of common houseflies. 90 percent confidence interval: 3.309466 4.330534 Given the R software output below, is there sufficient evidence to say that 2. the mean wing length of common houseflies is not equal to 4.55 cm, at 5% level of significance? Explain briefly. 95 percent confidence interval: 3.198311 4.441689 3 What happened to the confidence interval after increasing the confidence level? Give the width of the 90% and 95% confidence intervals.
Transcribed Image Text:Musca domestica L. or common houseflies have wing lengths that are found to be normally distributed. To verify this, a Filipino biometrician measured the wing lengths (in cm) of 15 random houseflies in a certain area and the following data were obtained: 1.7 2.5 2.6 2.8 3.3 3.6 3.7 3.7 3.9 4.1 4.7 4.8 5.1 5.2 5.6 1. Given the R software output below, interpret the 90% confidence interval about the true mean wing length of common houseflies. 90 percent confidence interval: 3.309466 4.330534 Given the R software output below, is there sufficient evidence to say that 2. the mean wing length of common houseflies is not equal to 4.55 cm, at 5% level of significance? Explain briefly. 95 percent confidence interval: 3.198311 4.441689 3 What happened to the confidence interval after increasing the confidence level? Give the width of the 90% and 95% confidence intervals.
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