Question

According to a survey conducted by the American Automobile Association, a family of four spends an average of $255.60 per day while on vacation in the US. Suppose a sample of 36 families of four vacationing at Mount Rushmore resulted in a sample mean of $235.31 per day and a sample standard deviation of $53.50.

a) Develop a 95% confidence interval estimate of the mean amount spent per day by a family of four visiting Mount Rushmore (round to two decimal places)

b) Give a short discussion of what this result may imply.

Answer #1

A survey conducted by the American Automobile Association showed
that a family of four spends an average of $215.60 per day while on
vacation. Suppose a sample of 64 families of four vacationing at
Niagara Falls resulted in a sample mean of $252.45 per day and a
sample standard deviation of $69.50. a. Develop a 95% confidence
interval estimate of the mean amount spent per day by a family of
four visiting Niagara Falls (to 2 decimals). ( , )...

A survey conducted by the American Automobile Association showed
that a family of four spends an average of $215.60 per day while on
vacation. Suppose a sample of 64 families of four vacationing at
Niagara Falls resulted in a sample mean of $252.45 per day and a
sample standard deviation of $75.50.
a. Develop a 95% confidence interval estimate of the mean amount
spent per day by a family of four visiting Niagara Falls (to 2
decimals).
( , )
b. Based...

A survey conducted by the American Automobile Association showed
that a family of four spends an average of $215.60 per day while on
vacation. Suppose a sample of 64 families of four vacationing at
Niagara Falls resulted in a sample mean of $252.45 per day and a
sample standard deviation of $78.50.
a. Develop a 95% confidence interval estimate of the mean amount
spent per day by a family of four visiting Niagara Falls (to 2
decimals). ( ___ ,...

A survey conducted by the American Automobile Association showed
that a family of four spends an average of $215.60 per day while on
vacation. Suppose a sample of 64 families of four vacationing at
Niagara Falls resulted in a sample mean of $252.45 per day and a
sample standard deviation of $74.50.
a. Develop a 95% confidence interval estimate of the mean amount
spent per day by a family of four visiting Niagara Falls (to 2
decimals). (____,_____)
b. Based...

1. Suppose a sample of 100 families of four vacationing at
Niagara Falls resulted in sample mean of $282.45 spent per day and
a sample standard deviation of $64.50. Develop a 95% confidence
interval estimate of the true population mean amount spent per day
by a family of four visiting Niagara Falls.

A survey that was conducted showed the average American that
visited a Target store spends $62 per visit. I believe the mean
amount of money spent is higher than $62. I surveyed 12 of my
friends and for the following amounts:
125, 75, 50, 100, 100, 130, 145, 300, 75, 60, 50, 50
Assume a random sample determine if the average American spends
more than $62 per visit to Target. Use a significance level of
.03.
PLEASE DO NOT HANDWRITE...

3. A survey was conducted about the cost for a family of four to
visit an amusement park for one day. A sample
of 32 families yielded an average cost of $190.28 with a
standard deviation of $51.75. Last year, a magazine
published that the average cost for a family of four to visit an
amusement park was $175. Based on the sample
data above, can we conclude that the mean cost is actually
higher than this at α=0
3....

The American Water Works Association reports that the per capita
water use in a single family home is 76 gallons per day. Legacy
Ranch is a relatively new housing development. The builders
installed more efficient water fixtures, such as low-flush toilets,
and subsequently conducted a survey of the residences. Twenty-seven
owners responded, and the sample mean water use per day was 71
gallons with a standard deviation of 9.5 gallons per day. At the
0.01 level of significance, is that...

2. According to the American Time Use Survey, the typical
American spends 154.8 minutes per day watching television. A survey
of 50 internet users results in a mean time watching television per
day of 128.7 minutes with a standard deviation of 46.5 minutes.
Test whether the internet users spend less time watching television
at 1% level of significance.

According to the American Time Use Survey, the typical American
spends 153.9 minutes (2.57 hours) per day watching television. A
survey of 50 Internet users results in a mean time watching
television per day of 127.9 minutes, with a standard deviation of
46.9 minutes. Conduct the appropriate test to determine if Internet
users spend less time watching television at the ⍶ = 0.05 level of
significance.

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 12 minutes ago

asked 24 minutes ago

asked 1 hour 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 2 hours ago

asked 2 hours ago

asked 2 hours ago