Question
In: Statistics and Probability
Sixty percent of 100 randomly selected shoppers who were classified as having rural backgrounds said they...
Sixty percent of 100 randomly selected shoppers who were classified as having rural backgrounds said they prefer to purchase camera equipment in discount stores. In a comparable study involving 250 shoppers with urban backgrounds, 50 percent said they would prefer the discount stores. At the 1% significance level, is there a difference between the two groups in the proportion who prefer discount stores?
please inclue Ho, Ha, p-value and statement as well as the rest of the problem
Solutions
orchestra answered 2 years agoRelated Solutions
Of 100 randomly selected people in Oregon, 45 said they were going to vote yes on...
Of 100 randomly selected people in Oregon, 45 said they were
going to vote yes on Proposition 1.
Construct a 95% confidence interval and round answers to 3
decimal places _____,____ (i.e. 0.123)
Of 380 randomly selected medical students, 21 said that they planned to work in a rural...
Of 380 randomly selected medical students, 21 said that they planned to work in a rural community. Find a 95% confidence interval for the true proportion of all medical students who plan to work in a rural community. Use the given degree of confidence and sample data to construct a confidence interval for the population proportion p. Please show how to do.
Of 380 randomly selected medical students, 21 said that they planned to work in a rural...
Of 380 randomly selected medical students, 21 said that they
planned to work in a rural community. Find a 95% confidence
interval for the true proportion of all medical students who plan
to work in a rural community.
A) 0.0251 < p < 0.0854
B) 0.0323 < p < 0.0782
C) 0.0280 < p < 0.0826
D) 0.0360 < p < 0.0745
Sixty-eight (68) randomly selected people were asked to test the efficiency of a new style of...
Sixty-eight (68) randomly selected people were asked to test the
efficiency of a new style of game controller. The frequencies for
successful completion of the test and the handedness of the
subjects are recorded below. Test the claim that this new device
functions independently of handedness. Use α = .05 .
Successful Unsuccessful
Left-handed 12 22
Right-handed 18 16
15) Express the claim in symbolic form.
16)What is the alternative hypothesis,
H1?
Group of answer choices
A) At most one...
12 Among 500 randomly selected adults were surveyed, there are 25% of them said that they...
12 Among 500 randomly selected adults were surveyed, there are
25% of them said that they used the Internet for shopping at least
a few times a year. Construct a 90% confidence interval estimate of
the percentage of adults who use the Internet for shopping.
Select one: a. (20.0%, 30.0%) b. (26.0%, 34.0%) c. (21.8%,
28.2%) d. (24.7%, 31.3%) e. None of the other answers is true.
14 To study the effects of prenatal cocaine use on infants, on
collects...
Among 500 randomly selected adults were surveyed, there are 25% of them said that they used...
Among 500 randomly selected adults were surveyed, there are 25%
of them said that they used the Internet for shopping at least a
few times a year. Construct a 99% confidence interval estimate of
the percentage of adults who use the Internet for shopping.
In a survey of 170 randomly selected Ohioans, sixteen said that they were left-handed. a. Calculate...
In a survey of 170 randomly selected Ohioans, sixteen said that
they were left-handed.
a. Calculate the percentage of the people surveyed who were
left-handed, rounded to the nearest hundredth of a percent.
b. Estimate the margin of error, assuming a 95% confidence
level. Round to the nearest hundredth of a percent.
c. Determine a 95% confidence interval for the relevant
population percentage.
d. Write a confidence statement corresponding to your answer in
part c. e. An observer could look...
Ten corvettes between 1 and 6 years old were randomly selected from the classified ads of...
Ten corvettes between 1 and 6 years old were randomly selected
from the classified ads of The Arizona Republic. The following data
were obtained, where x denotes age, in years, and y denotes price,
in hundreds of dollars.
X: 6 6 6 2 2 5 4 5 1 4
Y: 270 260 275 405 364 295 335 308 405 305
(A) Draw a scatter diagram
(B) Find the Linear Correlation coefficient r.
(C) Describe the shape, strength, and direction.
(D)...
Sixty items are randomly selected from a population of 660 items. The sample mean is 38,...
Sixty items are randomly selected from a population of 660
items. The sample mean is 38, and the sample standard deviation 3.
Develop a 98% confidence interval for the population mean.
(Round the final answers to 2 decimal
places.)
The confidence interval is between
and
.
A simple random sample was taken of 1000 shoppers Respondents were classified by gender (male or...
A simple random sample
was taken of 1000 shoppers Respondents were classified by gender
(male or female) and by meat department preference (beef, chicken,
fish). Results are shown in the contingency table:
Gender:
Beef
Chicken
Fish
Row
Total
Male
200
150
50
400
Female
250
300
50
600
Column
Total
450
450
100
1000
Is there a difference
in meat preference between males and females? The solution to this
problem takes four steps: (1) state the hypotheses, (2)...
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