Question
In: Statistics and Probability
A supermarket chain claims that its customers spend an average of 65.00 per visit to its...
A supermarket chain claims that its customers spend an average of 65.00 per visit to its stores. The manager of a local Long Beach store wants to know if the average amount spent at her location is the same. She takes a sample of 12 customers who shopped in the store over the weekend of March 18-19th. Here are the dollar amounts that the customers spent:
88
69
141
28
106
45
32
51
78
54
110
83
Calculate the mean and the standard deviation. Run the appropriate test in SPSS. You may choose to evaluate and make a decision based on p-value or critical value from the t-table.
Solutions
Expert Solution
Answer:-
Given That:-
A supermarket chain claims that its customers spend an average of 65.00 per visit to its stores. The manager of a local Long Beach store wants to know if the average amount spent at her location is the same. She takes a sample of 12 customers who shopped in the store over the weekend of March 18-19th. Here are the dollar amounts that the customers spent:
88
69
141
28
106
45
32
51
78
54
110
83
Mean = 
Standard deviation 
t.test
degree
fraction
P - value is = 
we reject 
is p value <
level signification at 5% level of significance
.3920
.05
we can not reject
of means the null hypothesis is accepted .
orchestra answered 1 year agoRelated Solutions
Problem 1 At a local supermarket, customers spend an average of 74 AED. The standard deviation...
Problem 1 At a local supermarket, customers spend an average of
74 AED. The standard deviation is 30 AED. If 60 customers come to
the supermarket today, what is the probability that the total
revenue of the supermarket will be between 4000 AED and 5000
AED.
1)A local supermarket claims that the waiting time for its customers to be served is the...
1)A local supermarket claims that the waiting time for its
customers to be served is the lowest in the area. A competitor's
supermarket checks the waiting times at both supermarkets. The
sample statistics are listed below. Test the local supermarket's
hypothesis. Use a= 0.05.
Local Supermarket
Competitor Supermarket
n1= 15
n2= 16
xbar 1= 5.3 minutes
xbar 2= 5.6 minutes
s1= 1.1 minutes
s2= 1.0 minutes
A) Hypothises:
B) Critical Values t-critical
C) Test statistic t-stat and the decision to...
Zingo's Grocery store claims that customers spend an average of 5 minutes waiting for service at...
Zingo's Grocery store claims that customers spend an average of
5 minutes waiting for service at the stores deli counter. A random
sample of 45 customers was timed at the deli counter, and the
average service time was found to be 5.75 minutes. Historically the
standard deviation for waiting time is 1.75 minutes per
customer.
a. Find the 95% confidence interval for
the mean time that customers wait at the deli counter.
b. Is there sufficient evidence to...
Zingo's Grocery store claims that customers spend an average of 5 minutes waiting for service at...
Zingo's Grocery store claims that customers spend an average of
5 minutes waiting for service at the stores deli counter. A random
sample of 45 customers was timed at the deli counter, and the
average service time was found to be 5.75 minutes. Historically the
standard deviation for waiting time is 1.75 minutes per
customer.
a. Find the 95% confidence interval for
the mean time that customers wait at the deli counter.
b. Is there sufficient evidence to...
Zingo's Grocery store claims that customers spend an average of 5 minutes waiting for service at...
Zingo's Grocery store claims that customers spend an average of
5 minutes waiting for service at the stores deli counter. A random
sample of 45 customers was timed at the deli counter, and the
average service time was found to be 5.75 minutes. Historically the
standard deviation for waiting time is 1.75 minutes per
customer.
a. Find the 95% confidence interval for the mean time that
customers wait at the deli counter.
b. Is there sufficient evidence to indicate that...
A grocery store is interested in how much money, on average, their customers spend each visit in the produce department.
A grocery store is interested in how much money, on average,
their customers spend each visit in the produce department. Using
their store records, they draw a sample of 1,000 visits and
calculate each customer’s average spending on produce. Who is the
population of interest?
Exhibit: Costco Customers. Customers at Costco spend an average of $130 per trip (The Wall Street...
Exhibit: Costco Customers.
Customers at Costco spend an average of $130 per trip (The
Wall Street Journal, October 6, 2010). One of Costco’s rivals
would like to determine whether Costco's customers spend more per
trip. A survey of the receipts of 25 customers found that the
sample mean was $135.25. Assume that the population standard
deviation of spending is $10.50 and the spending follows a normal
distribution (use the significance level 0.07).
Round your solutions for this Exhibit to 4...
The management of a supermarket wanted to investigate if the male customers spend less money, on...
The management of a supermarket wanted to investigate if the
male customers spend less money, on average, than the female
customers. A sample of 25 male customers who shopped at this
supermarket showed that they spent an average of $75 with a
standard deviation of $17.50. Another sample of 20 female customers
who shopped at the same supermarket showed that they spent an
average of $89 with a standard deviation of $14.40. Assume that the
amounts spent at this supermarket...
A recent study claims that people who travel for business spend an average of $78.00 per...
A recent study claims that people who travel for business spend
an average of $78.00 per day on food. You suspect the real average
is less than this. You conduct your own study and find that a
random sample of 67 people who travel for business spend an average
of $75.00 per day on food with standard deviation $12.00. Perform a
hypothesis test using ∝ = 0.01 Step #1: State the null and
alternative hypothesis. Identify the claim.Step #2: Find...
A recent study claims that business travelers spend an average of $39 per day on meals....
A recent study claims that business travelers spend an average
of $39 per day on meals. A sample of 15 business travelers found
that they had spent an average of $42 per day with a standard
deviation of $3.78. If alpha =0.05, what is the claim, should we
reject H0 or fail to reject H0, what is the test value,
what is the alternate hypothesis?
ADVERTISEMENT
ADVERTISEMENT
Latest Questions
- Discuss some examples of how motherboards and CPU combinations have evolved in the past 20 years....
- 16. What does HIRM provide to managers of health service delivery organizations? 17. What are the...
- Why do diamonds sell for such high prices? Why do pre-owned diamonds typically sell for such...
- The Utah Mining Corporation is set to open a gold mine near Provo, Utah. According to...
- Market Top Investors, Inc., is considering the purchase of a $350,000 computer with an economic life...
- As Tom Montgomery, how would you convince the De Beers Executive Committee to launch IIDV as...
- 1.2 Please give the example of the compensation package that you would like to provide to...
ADVERTISEMENT