Question

The Retail Advertising and Marketing Association would like to estimate the average amount of money that a person spends for Mother's Day with a 99% confidence interval and a margin of error within plus or minus $12. Assuming the standard deviation for spending on Mother's Day is $36, the required sample size is:

59

7

8

60

Answer #1

Refer Standard normal table/Z-table or use excel function
" |

Round the value to the nearest whole number.

The retail advertising and marketing association would like to
estimate the average amount of money that a person spends for
Mother’s Day with a 95% confidence interval in a margin of error
within plus or -6 dollars. Assuming a standard deviation for
spending on Mother’s Day is $36. The required sample is

An advertising executive wants to estimate the mean weekly
amount of time consumers spend watching traditional television
daily. Based on previous studies, the standard deviation is
assumed to be 24 minutes. The executive wants to estimate, with
99% confidence, the mean weekly amount of time to within plus or
minus ±66 minutes.
a. What sample size is needed?
b. If 95% confidence is desired, how many consumers need to
be selected?

A manager wishes to estimate a population mean using a 99%
confidence interval estimate that has a margin of error of plus or
minus±48.0 If the population standard deviation is thought to be
630, what is the required sample size?
The sample size must be at least?

We would like to find a 99% confidence interval estimate of the
mean teacher’s salary in the Chapel Hill school district. The
margin of error for this estimate must be no more than $2,000. From
previous studies the standard deviation of these salaries is known
to be about $6,000. Find the sample size needed to perform this
estimate.
Group of answer choices
71
60
46
56

The U.S. Department of Transportation would like to estimate the
proportion of drivers that are uninsured in the state of
Mississippi. A pilot sample of 60 drivers from Mississippi found
that 18 were uninsured. Determine the total sample size needed to
construct a 99% confidence interval for the proportion of uninsured
drivers in Mississippi with a margin of error equal to 5%.
Use the z-score with three decimal places, Remember the rounding
policy for sample size

The U.S. Department of Transportation would like to estimate the
proportion of drivers that are uninsured in the state of
Mississippi. A pilot sample of 60 drivers from Mississippi found
that 18 were uninsured. Determine the total sample size needed to
construct a 99% confidence interval for the proportion of uninsured
drivers in Mississippi with a margin of error equal to 5%. (Use the
z-score with three decimal places, Remember the rounding policy for
sample size))

An economist would like to estimate the 99% confidence interval
for the average real estate taxes collected by a small town in
California. In a prior analysis, the standard deviation of real
estate taxes was reported as $1,470. [You may find it useful to
reference the z table.] What is the minimum sample size required by
the economist if he wants to restrict the margin of error to
$510

Suppose we would like to estimate the mean amount of money (μ)
spent on clothing by female McGill students in the last month. A
random sample of 14 university women spending is:
{200,200,100,100,200,200, 250,150,80,80,20,50,100,350}. Assume that
the amount spent on cloths is normally distributed. Compute 95% and
99% confidence interval for μ.
4- Following exercise 3 we asked a random sample of 19
university men to estimate how much they spent on clothing in the
last month. The data is...

You own a small storefront retail business and are interested in
determining the average amount of money a typical customer spends
per visit to your store. You take a random sample over the course
of a month for 24 customers and find that the average dollar amount
spent per transaction per customer is $80.117 with a standard
deviation of $13.8918. When creating a 95% confidence interval for
the true average dollar amount spend per customer, what is the
margin of...

A marketing researcher wants to estimate the mean amount spent
($) on a certain retail website by members of the website's
premium program. A random sample of
95 members of the website's premium program who recently made a
purchase on the website yielded a mean of $2000 and a standard
deviation of $150.
Complete parts (a) and (b) below.
A ___ < U < ____
b. Interpret the interval constructed in (a).
Choose the correct answer below.
A.The sample mean...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 1 minute ago

asked 13 minutes ago

asked 44 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago

asked 3 hours ago

asked 3 hours ago

asked 4 hours ago