In a survey involving 400 supermarkets around the country, it was found that 136 supermarkets sold a type of toiletries that contains a particular chemical above the level prescribed by the government. (a) Estimate the percentage of supermarkets in the country that sold a type of toiletries containing a particular chemical above the prescribed level. Obtain a 95 % confidence interval for the percentage of supermarkets that sold a type of toiletries containing a particular chemical above the prescribed level. Determine the size of the sample of supermarkets in the country that sold a type of toiletries containing a particular chemical above the prescribed level that can be estimated with an error of less than 2 % with a probability of 0.95. (b) (c)
In a survey involving 400 supermarkets around the country, it was found that 136 supermarkets sold a type of toiletries that contains a particular chemical above the level prescribed by the government. (a) Estimate the percentage of supermarkets in the country that sold a type of toiletries containing a particular chemical above the prescribed level. Obtain a 95 % confidence interval for the percentage of supermarkets that sold a type of toiletries containing a particular chemical above the prescribed level. Determine the size of the sample of supermarkets in the country that sold a type of toiletries containing a particular chemical above the prescribed level that can be estimated with an error of less than 2 % with a probability of 0.95. (b) (c)
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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![In a survey involving 400 supermarkets around the country, it was found that 136
supermarkets sold a type of toiletries that contains a particular chemical above the
level prescribed by the government.
(a)
17.
Estimate the percentage of supermarkets in the country that sold a type of
toiletries containing a particular chemical above the prescribed level.
Obtain a 95 % confidence interval for the percentage of supermarkets that sold
a type of toiletries containing a particular chemical above the prescribed level.
Determine the size of the sample of supermarkets in the country that sold a
type of toiletries containing a particular chemical above the prescribed level
that can be estimated with an error of less than 2 % with a probability of 0.95.
(b)
(c)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd4f4e5df-c589-41da-9116-8e6da188aee7%2F105ebb97-21c3-4b17-9b19-38c413dc9e2e%2Flfhlqx_processed.jpeg&w=3840&q=75)
Transcribed Image Text:In a survey involving 400 supermarkets around the country, it was found that 136
supermarkets sold a type of toiletries that contains a particular chemical above the
level prescribed by the government.
(a)
17.
Estimate the percentage of supermarkets in the country that sold a type of
toiletries containing a particular chemical above the prescribed level.
Obtain a 95 % confidence interval for the percentage of supermarkets that sold
a type of toiletries containing a particular chemical above the prescribed level.
Determine the size of the sample of supermarkets in the country that sold a
type of toiletries containing a particular chemical above the prescribed level
that can be estimated with an error of less than 2 % with a probability of 0.95.
(b)
(c)
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