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Question 3 [25] OK furniture store submit weekly records the number of customer contacts contacted per...
Question 3 [25]
OK furniture store submit weekly records the number of customer
contacts contacted per week. A sample of 50 weekly reports showed a
sample mean of 25 customer contacts per week. The sample standard
deviation was 5.2. (Show all your works)
a) Compute the Margin of error at 0.05 significant level
[6]
b) Provide a 95% confidence interval for the population mean.
[4]
c) Compute the Margin of error at 0.01 significant level
[6]
d) Provide a 99% confidence interval for the population mean.
[4]
e) With a 0.99 probability, what size of sample should be taken if
the desired margin of error is 1.5
Solutions
milcah answered 1 year agoRelated Solutions
Question 3 [25] OK furniture store submit weekly records the number of customer contacts contacted per...
Question 3 [25]
OK furniture store submit weekly records the number of customer
contacts contacted per week. A sample of 50 weekly reports showed a
sample mean of 25 customer contacts per week. The sample standard
deviation was 5.2. (Show all your works)
a) Compute the Margin of error at 0.05 significant level
b) Provide a 95% confidence interval for the population mean.
c) Compute the Margin of error at 0.01 significant level
d) Provide a 99% confidence interval for...
Sales personnel for Skillings Distributors submit weekly reportslisting the customer contacts made during the week. A...
Sales personnel for Skillings Distributors submit weekly
reportslisting the customer contacts made during the week. A sample
of 65weekly reports showed a sample mean of 19.5 customer contacts
perweek. The sample standard deviation was 5.2. Provide 90% and
95%confidence intervals for the population mean number of
weeklycustomer contacts for the sales personnel.
90% Confidence, to 2 decimals:
( . )
95% Confidence, to 2 decimals:
( , )
Sales personnel for Skillings Distributors submit weekly reports listing the customer contacts made during the week....
Sales personnel for Skillings Distributors submit weekly reports
listing the customer contacts made during the week. A sample of 85
weekly reports showed a sample mean of 17.5 customer contacts per
week. The sample standard deviation was 5.3. Provide 90% and 95%
confidence intervals for the population mean number of weekly
customer contacts for the sales personnel.
A. 90% Confidence interval, to 2 decimals:
(___,____)
B. 95% Confidence interval, to 2 decimals:
(__,___)
Sales personnel for Skillings Distributors submit weekly reports listing the customer contacts made during the week....
Sales personnel for Skillings Distributors submit weekly reports
listing the customer contacts made during the week. A sample of 75
weekly reports showed a sample mean of 17.5 customer contacts per
week. The sample standard deviation was 5.1. Provide 90% and 95
percent confidence intervals for the population mean number of
weekly customer contacts for the sales personnel.
Sales personnel for Skillings Distributors submit weekly reports listing the customer contacts made during the week....
Sales personnel for Skillings Distributors submit weekly reports
listing the customer contacts made during the week. A sample of 85
weekly reports showed a sample mean of 19.5 customer contacts per
week. The sample standard deviation was 5.7. Provide 90% and 95%
confidence intervals for the population mean number of weekly
customer contacts for the sales personnel. 90% Confidence interval,
to 2 decimals:
Sales personnel for Skillings Distributors submit weekly reports listing the customer contacts made during the week....
Sales personnel for Skillings Distributors submit weekly reports
listing the customer contacts made during the week. A sample of 68
weekly reports showed a sample mean of 17.5 customer contacts per
week. The sample standard deviation was 5.2.
Provide a 90% confidence interval for the population mean number
of weekly customer contacts for the sales personnel. (Round your
answers to two decimal places.)
contacts/week to contacts/week
Provide 95% confidence interval for the population mean number
of weekly customer contacts for the...
Sales personnel for Skillings Distributors submit weekly reports listing the customer contacts made during the week....
Sales personnel for Skillings Distributors submit weekly reports
listing the customer contacts made during the week. A sample of 55
weekly reports showed a sample mean of 19.5 customer contacts per
week. The sample standard deviation was 5.9. Provide 90% and 95%
confidence intervals for the population mean number of weekly
customer contacts for the sales personnel.
90% Confidence interval, to 2 decimals:
( , )
95% Confidence interval, to 2 decimals:
( , )
A simple random sample of...
Sales personnel for Skillings Distributors submit weekly reports listing the customer contacts made during the week....
Sales personnel for Skillings Distributors submit weekly reports
listing the customer contacts made during the week. A sample of 85
weekly reports showed a sample mean of 19.5 customer contacts per
week. The sample standard deviation was 5.2. Provide 90% and 95%
confidence intervals for the population mean number of weekly
customer contacts for the sales personnel.
90% Confidence interval, to 2 decimals:
( , )
95% Confidence interval, to 2 decimals:
( , )
Sales personnel for Skillings Distributors submit weekly reports listing the customer contacts made during the week....
Sales personnel for Skillings Distributors submit weekly reports
listing the customer contacts made during the week. A sample of 67
weekly reports showed a sample mean of 19.5 customer contacts per
week. The sample standard deviation was 5.2.
Provide a 90% confidence interval for the population mean number
of weekly customer contacts for the sales personnel. (Round your
answers to two decimal places.)
contacts/week to contacts/week
Provide 95% confidence interval for the population mean number
of weekly customer contacts for...
Sales personnel for Skillings Distributors submit weekly reports listing the customer contacts made during the week....
Sales personnel for Skillings Distributors submit weekly reports
listing the customer contacts made during the week. A sample of 85
weekly reports showed a sample mean of 19.5 customer contacts per
week. The sample standard deviation was 5.5. Provide 90% and 95%
confidence intervals for the population mean number of weekly
customer contacts for the sales personnel.
a. 90% confidence interval, to 2 decimals:
b. 95% confidence interval, to 2 decimals:
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