Question
In: Math
Arbitron Media Research Inc. conducted a study of the iPod listening habits of men and women....
Arbitron Media Research Inc. conducted a study of the iPod listening habits of men and women. One facet of the study involved the mean listening time. It was discovered that the mean listening time for a sample of 8 men was 34 minutes per day. The standard deviation was 19 minutes per day. The mean listening time for a sample of 10 women was also 34 minutes, but the standard deviation of the sample was 7 minutes. Use a two-tailed test and at 0.02 significance level, can we conclude that there is a difference in the variation in the listening times for men and women? (Round your answer to 3 decimal places.) The test statistic is . Decision: H0:σ21=σ22.
Solutions
milcah answered 6 months agoRelated Solutions
Arbitron Media Research Inc. conducted a study of the iPod listening habits of men and women....
Arbitron Media Research Inc. conducted a study of the iPod
listening habits of men and women. One facet of the study involved
the mean listening time. It was discovered that the mean listening
time for a sample of 13 men was 30 minutes per day. The standard
deviation was 13 minutes per day. The mean listening time for a
sample of 11 women was also 30 minutes, but the standard deviation
of the sample was 14 minutes. Use a two-tailed...
Arbitron Media Research Inc. conducted a study of the iPod listening habits of men and women....
Arbitron Media Research Inc. conducted a study of the iPod
listening habits of men and women. One facet of the study involved
the mean listening time. It was discovered that the mean listening
time for a sample of 13 men was 40 minutes per day. The standard
deviation was 11 minutes per day. The mean listening time for a
sample of 12 women was also 40 minutes, but the standard deviation
of the sample was 17 minutes. At the 0.02...
A study was conducted on the number of hours slept by men and women. A sample...
A study was conducted on the number of hours slept by men and
women. A sample of 18 men slept an average of 6.1 hours a day with
a sample standard deviation of 2.1 hours, whereas a sample of 21
women slept an average of 6.4 hours a day with a sample standard
deviation of 1.7 hours. Use a 0.05 significance level to test the
claim that the average number of hours that there is a difference
between the average...
A study was conducted on the number of minutes spent texting by men and women. A...
A study was conducted on the number of minutes spent texting by
men and women. A sample of 20 men spent an average of 82.3 minutes
a day texting with a sample standard deviation of 24.7 minutes,
whereas a sample of 27 women spent an average of 101.4 minutes a
day texting with a sample standard deviation of 27.3 minutes. Use a
0.10 significance level to test the claim that the average number
of minutes that men spent texting a...
a. According to a study conducted for Gateway Computers, 60% of men and 70% of women...
a. According to a study conducted for Gateway Computers, 60% of
men and 70% of women say that weight is an extremely/very important
factor in purchasing a laptop computer. Suppose this survey was
conducted using 374 men and 481 women. Do these data show enough
evidence to declare that a significantly higher proportion of women
than men believe that weight is an extremely/very important factor
in purchasing a laptop computer? Use a 5% level of significance. b.
Use these data...
(i) The research director of a large oil company conducted a study of the buying habits...
(i) The research director of a large oil company conducted a
study of the buying habits of consumers with respect to the amount
of gasoline purchased at full-service pumps. The arithmetic mean
amount is 11.5 gallons and the median amount is 11.95 litres. The
standard deviation of the sample is 4.5 litres. The Pearson's
coefficient of skewness can be calculated to be -0.30.
(ii) Rainbow Trout, Inc., feeds fingerling trout in special ponds
and markets them when they attain a...
A university conducted a study of whether running is healthy for men and women over age...
A university conducted a study of whether running is healthy
for men and women over age 50. During the first eight years of the
study, 1.9% of the 457 members of a fitness association died. We
are interested in the proportion of people over 50 who ran and died
in the same eight-year period.
NOTE: If you are using a Student's t-distribution, you may
assume that the underlying population is normally distributed. (In
general, you must first prove that assumption,...
According to a study conducted for Gateway Computers, 59% of men and 70% of women say...
According to a study conducted for Gateway Computers, 59% of men
and 70% of women say that weight is an extremely/very important
factor in purchasing a laptop computer. Suppose this survey was
conducted using 374 men and 481 women. Do these data show enough
evidence to declare that a significantly higher proportion of women
than men believe that weight is an extremely/very important factor
in purchasing a laptop computer? Use alpha= 0.05.
Write the correct R commands for solving this...
1.Are men smarter than women at Private Universities in the United States? A study was conducted,...
1.Are men smarter than women at Private Universities in the
United States? A study was conducted, randomly selecting 400 men,
and 400 women from different Private Universities across the US,
and asking for their GPAs. What is the population of this
study?
All students enrolled at Private Universities in the world
All students enrolled at Universities in the US
Female students enrolled at Private Universities in the US
All students enrolled at Private Universities in the US
unanswered
2.Match each...
Smoking habits of UK residents: A survey was conducted to study the smoking habits of UK...
Smoking habits of UK residents: A survey was
conducted to study the smoking habits of UK residents. Below is a
data matrix displaying a portion of the data collected in this
survey. Note that "£" stands for British Pounds Sterling, "cig"
stands for cigarettes, and "N/A" refers to a missing component of
the data.
sex
age
marital
grossIncome
smoke
amtWeekends
amtWeekdays
1
Female
42
Single
Under £2600
Yes
12 cig/day
12 cig/day
2
Male
44
Single
£10,400 to £15,600
No...
ADVERTISEMENT
ADVERTISEMENT
Latest Questions
- What is the difference among the principles of modularization, abstraction, encapsulation, and separation of interface and...
- An investment project costs $20,100 and has annual cash flows of $4,400 for six years. ...
- PUT IN JAVA PROGRAMMING The StockB class: Design a class named StockB that contains the following...
- Draw a DFA for the following ( ∑ = {0,1}): Set of all strings with.
- In the article from Forbes notes that the goal of a leader is not to clone...
- Many people keep time using a 24 hour clock (11 is 11am and 23 is 11pm,...
- UNIX ONLY -- DIFFICULT LAB ASSIGNMENT This is an extremely difficult subject for me. Could you...
ADVERTISEMENT