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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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Question

A simple random sample of 400 households is chosen in a
certain town with population of 50000. The average
commute distance to work for heads of households in the
sample was 8.7 miles and the SD was 9 miles.
Find the 90% confidence interval for the average
commute distance of heads of all households in the town,
and enter the lower-end (smaller) value. Round your
answer to two decimal places.

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You are interested in constructing a 99% confidence interval for the proportion of all caterpillars that eventually become butterflies. Of the 417 randomly selected caterpillars observed, 45 lived to become butterflies. Round answers to 4 decimal places where possible.
The first pic is the question. Since the tutors are answering incorrectly more often, the second pic is an “example question”
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