Question
In: Statistics and Probability
Customers arrive at a movie theater at the advertised movie time only to find that they...
Customers arrive at a movie theater at the advertised movie time only to find that they have to sit through several previews and prepreview ads before the movie starts. Many complain that the time devoted to previews is too long. A preliminary sample conducted by The Wall Street Journal showed that the standard deviation of the amount of time devoted to previews was four minutes. Use that as a planning value for the standard deviation in answering the following questions.
a. If we want to estimate the population mean time for previews at movie theaters with a margin of error of 69 seconds, what sample size should be used? Assume 95% confidence.
b. If we want to estimate the population mean time for previews at movie theaters with a margin of error of 1 minute, what sample size should be used? Assume 95% confidence.
Solutions
orchestra answered 2 years agoRelated Solutions
Customers arrive at a movie theater at the advertised movie time only to find that they...
Customers arrive at a movie theater at the advertised movie time
only to find that they have to sit through several previews and
prepreview ads before the movie starts. Many complain that the time
devoted to previews is too long. A preliminary sample conducted by
The Wall Street Journal showed that the standard deviation of the
amount of time devoted to previews was four minutes. Use that as a
planning value for the standard deviation in answering the
following questions....
Customers arrive at a movie theater at the advertised movie time only to find that they...
Customers arrive at a movie theater at the advertised movie time
only to find that they have to sit through several previews and
pre-preview ads before the movie starts. Many complain that the
time devoted to previews is too long.† A preliminary sample
conducted by The Wall Street Journal showed that the standard
deviation of the amount of time devoted to previews was 6 minutes.
Use that as a planning value for the standard deviation in
answering the following questions....
Customers arrive at a movie theater at the advertised movie time only to find that they have to sit through several previews and pre-preview ads before the movie starts.
Customers arrive at a movie theater at the advertised movie time only to find that they have to sit through several previews and pre-preview ads before the movie starts. Many complain that the time devoted to previews is too long.† A preliminary sample conducted by The Wall Street Journal showed that the standard deviation of the amount of time devoted to previews was 6 minutes. Use that as a planning value for the standard deviation in answering the following...
An usher at a movie theater claims no more than half of all movie theater customers...
An usher at a movie theater claims no more than half of all
movie theater customers buy something at the refreshment stand. To
test the claim, the usher observes a random sample of 80 people and
finds that 47 of them buy something.
a) What is the Null Hypothesis and the Alternative Hypothesis
for the usher's claim?
b) If we use a 0.01 significance level, what is the critical
value for the test?
c) Calculate the value of the test...
QuadPlex Cinema is the only movie theater in Idaho Falls. The nearest rival movie theater, the...
QuadPlex Cinema is the only movie theater in Idaho Falls. The
nearest rival movie theater, the Cedar Bluff Twin, is 35 miles away
in Pocatello. Thus QuadPlex Cinema possesses a degree of market
power. Despite having market power, QuadPlex Cinema is currently
suffering losses. In a conversation with the owners of QuadPlex,
the manager of the movie theater made the following suggestions:
“Since QuadPlex is a local monopoly, we should just increase ticket
prices until we make enough profit.”
a....
The Bijou Theater shows vintage movies. Customers arrive at the theater line at the rate of...
The Bijou Theater shows vintage movies. Customers arrive at the
theater line at the rate of 80 per hour. The ticket seller averages
30 seconds per customer, which includes placing validation stamps
on customers’ parking lot receipts and punching their frequent
watcher cards. (Because of these added services, many customers
don’t get in until after the feature has started.)
a. What is the average customer time in the
system? (Round your answer to 2 decimal
places.)
b. What would be...
The Bijou Theater shows vintage movies. Customers arrive at the theater line at the rate of...
The Bijou Theater shows vintage movies. Customers arrive at the
theater line at the rate of 100 per hour. The ticket seller
averages 30 seconds per customer, which includes placing validation
stamps on customers' parking lot receipts and punching their
frequent watcher cards. (Because of these added services, many
customers don't get in until after the feature has started.)
a. What is the average customer time in the system?
b. What would be the effect on customer time in the...
The Bijou Theater shows vintage movies. Customers arrive at the theater line at the rate of...
The Bijou Theater shows vintage movies. Customers arrive at the
theater line at the rate of 80 per hour. The ticket seller averages
36 seconds per customer, which includes placing validation stamps
on customers’ parking lot receipts and punching their frequent
watcher cards. (Because of these added services, many customers
don’t get in until after the feature has started.) (Use the Excel
spreadsheet Queue Models.)
a. What is the average customer time in the
system? (Round your answer to 2...
A random group of thirty customers at a local theater was interviewed regarding their movie viewing habits.
A random group of thirty customers at a local theater was interviewed regarding their movie viewing habits. The following responses were obtained for the question, “How many times during the past month did you go to the movies?” Number of movies attended 0 1 2 3 4 Number of customers 3 10 8 6 3 a. b. Find the probability that a customer selected at random went to the movies:
1) more than one time, 2) two times, 3) at...
A movie theater manager believes the average amount of money customers spend on snacks is over...
A movie theater manager believes the average amount of money
customers spend on snacks is over $15.
To test the claim, a theater employee tracks the spending of 25
randomly selected customers.
The sample mean is $17.08 with a sample standard deviation of
$4.81.
a) What is the Null Hypothesis and the Alternative Hypothesis
for the manager’s claim?
b) Assuming the population is normal, should we use the Normal
z-test or the Student’s t-test?
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