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1 A biologist studying a colony of beetles selects and weighs a random sample of 20 adult males. She knows that, because of natural variability, the weights of such beetles are normally distributed with standard deviation 0.2 g. Their weights, in grams, are as follows. 5.2 5.4 4.9 5.0 4.8 5.7 5.2 5.2 5.4 5.1 5.6 5.0 5.2 5.1 5.3 5.2 5.1 5.3 5.2 5.2 (i) Find the mean weight of the beetles in this sample. (ii) Find 95% confidence limits for the mean weight of such beetles.

1 A biologist studying a colony of beetles selects and weighs a random sample of 20 adult males. She knows that, because of natural variability, the weights of such beetles are normally distributed with standard deviation 0.2 g. Their weights, in grams, are as follows. 5.2 5.4 4.9 5.0 4.8 5.7 5.2 5.2 5.4 5.1 5.6 5.0 5.2 5.1 5.3 5.2 5.1 5.3 5.2 5.2 (i) Find the mean weight of the beetles in this sample. (ii) Find 95% confidence limits for the mean weight of such beetles.

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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1 A biologist studying a colony of beetles selects and weighs a random sample of 20 adult males. She knows that, because of natural variability, the weights of such beetles are normally distributed with standard deviation 0.2 g. Their weights, in grams, are as follows. 5.2 5.4 4.9 5.0 4.8 5.7 5.2 5.2 5.4 5.1 5.6 5.0 5.2 5.1 5.3 5.2 5.1 5.3 5.2 5.2 (i) Find the mean weight of the beetles in this sample. (ii) Find 95% confidence limits for the mean weight of such beetles.
Transcribed Image Text:1 A biologist studying a colony of beetles selects and weighs a random sample of 20 adult males. She knows that, because of natural variability, the weights of such beetles are normally distributed with standard deviation 0.2 g. Their weights, in grams, are as follows. 5.2 5.4 4.9 5.0 4.8 5.7 5.2 5.2 5.4 5.1 5.6 5.0 5.2 5.1 5.3 5.2 5.1 5.3 5.2 5.2 (i) Find the mean weight of the beetles in this sample. (ii) Find 95% confidence limits for the mean weight of such beetles.
1 (i) 5.205g (ii) 5.117g, 5.293 g
Transcribed Image Text:1 (i) 5.205g (ii) 5.117g, 5.293 g
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