Question
Consider the following data (Atlanta = population 1, Chicago = population 2): City Atlanta (1) Chicago...
Consider the following data (Atlanta = population 1, Chicago = population 2):
|
City |
Atlanta (1) |
Chicago (2) |
|
Sample size |
100 individuals |
100 individuals |
|
Own a Toyota |
29 individuals |
33 individuals |
At population level, is the proportion of Toyota owners in Atlanta smaller than the proportion of Toyota owners in Chicago? Formulate the hypothesis.
A. Ho: p1-p2 = 0 . Ha: p1-p2≠0
B. Ho: p1-p2 ≥ 0 . Ha: p1-p2 < 0
C. Ho: p1-p2 ≤ 0 . Ha: p1-p2 > 0
D. Ho: p1-p2 < 0 . Ha: p1-p2 ≥ 0
What is the p-value?
What is your conclusion at 5% significance?
Obtain the 95% confidence interval for the difference between the two population proportions?
What is your conclusion based on the interval?
Homework Answers
Answer #1
Not the answer you're looking for?
Similar Questions
Consider the hypothesis test below. ho: p1-p2 <=0 ha: p1-p2>0 The following results are for independent...
Consider the
hypothesis test below. ho: p1-p2 <=0
ha: p1-p2>0
The following results
are for independent samples taken from the two populations.
Sample 1
Sample 2
n1 200
n2 300
p-bar 0.24
p-bar 0.17
Use pooled estimator of.
a. What is the value of the test statistic (to 2
decimals)?
b. What is the -value (to 4 decimals)?
c. With , what is your hypothesis testing
conclusion?
- Select your answer -Conclude the difference between the
proportions is greater than...
Consider the following results for independent samples taken from two populations. Sample 1 Sample 2 n1...
Consider the following results for independent samples taken
from two populations.
Sample 1
Sample 2
n1 = 400
n2 = 300
p1 = 0.53
p2 = 0.36
A. What is the point estimate of the difference between the two
population proportions? (Use
p1 − p2.
)
B. Develop a 90% confidence interval for the difference between
the two population proportions. (Use
p1 − p2.
Round your answer to four decimal places.)
to
C. Develop a 95% confidence interval for the...
Consider the following results for independent samples taken from two populations. Sample 1 Sample 2 n1...
Consider the following results for independent samples taken
from two populations.
Sample 1
Sample 2
n1 = 400
n2 = 300
p1 = 0.53
p2 = 0.31
(a)
What is the point estimate of the difference between the two
population proportions? (Use
p1 − p2.
)
(b)
Develop a 90% confidence interval for the difference between the
two population proportions. (Use
p1 − p2.
Round your answer to four decimal places.)
to
(c)
Develop a 95% confidence interval for the...
1. Consider this hypothesis test: H0: p1 - p2 = 0 Ha: p1 - p2 >...
1. Consider this hypothesis test:
H0: p1 - p2 = 0
Ha: p1 - p2 > 0
Here p1 is the population proportion of “yes” of
Population 1 and p2 is the population proportion of
“yes” of Population 2. Use the statistics data from a simple random
sample of each of the two populations to complete the following:
(8 points)
Population 1
Population 2
Sample Size (n)
400
600
Number of “yes”
300
426
Compute the test statistic z.
What...
Do Georgians (population 1) spend more time online compared to Floridians (population 2)? Last year data:...
Do Georgians (population 1) spend more time online compared to
Floridians (population 2)? Last year data: Georgia: sample size =
100, sample mean = 35 hours, sample standard deviation 14.5 hours.
Florida: sample size = 100, sample mean = 32 hours, sample standard
deviation 10.5 hours. Formulate the hypothesis.
Calculate the p-value
What is your conclusion at alpha = 0.05?
Obtain a 95% confidence interval for the difference between the
population of Georgia (population 1) and Florida (population
2).
What...
Consider the following two questions designed to assess quantitative literacy. What is 15% of 1000? A...
Consider the following two questions designed to assess
quantitative literacy.
What is 15% of 1000?
A store is offering a 15% off sale on all TVs. The most popular
television is normally priced at $1000. How much money would a
customer save on the television during this sale?
Suppose the first question is asked of 200 randomly selected
college students, with 164 answering correctly; the second one is
asked of a different random sample of 200 college students,
resulting in...
Two computer users were discussing tablet computers. A higher proportion of people ages 16 to 29...
Two computer users were discussing tablet computers. A higher
proportion of people ages 16 to 29 use tablets than the proportion
of people age 30 and older. The table below details the number of
tablet owners for each age group. Test at the 1% level of
significance. (For subscripts let 1 = 16-29 year old users, and 2 =
30 years old and older users.)
16–29 year
olds
30 years old and
older
Own a
Tablet
69
231
Sample
Size...
A researcher investigated determinants that account for individuals' making a transition from having a home (domiciled)...
A researcher investigated determinants that account for
individuals' making a transition from having a home (domiciled) but
using meal programs to becoming homeless. The following table
contains the data obtained in the study.
Homeless Men
Domiciled Men
Sample size
117
267
Number currently working
33
96
Is there sufficient evidence to indicate that the proportion of
those currently working is larger for domiciled men than for
homeless men? (Use
α = 0.01.
Use
p1
for the population proportion of homeless...
Consider the following competing hypotheses and accompanying sample data. (You may find it useful to reference...
Consider the following competing hypotheses and accompanying
sample data. (You may find it useful to reference the
appropriate table: z table or t
table)
H0: p1 −
p2 ≥ 0
HA: p1 −
p2 < 0
x1 = 250
x2 = 275
n1 = 400
n2 = 400
a. Calculate the value of the test statistic.
(Negative value should be indicated by a minus sign. Round
intermediate calculations to at least 4 decimal places and final
answer to 2 decimal...
You wish to test the following claim (Ha) at a significance level of α=0.002. Ho :...
You wish to test the following claim (Ha) at a significance
level of α=0.002.
Ho : p1 = p2
Ha : p1 < p2
You obtain 34.9% success in a sample of size n1=450 from the first
population. You obtain 41.5% successes in a sample of size n2=638
from the second population. For this test, you should NOT use the
continuity correction, and you should use the normal distribution
as an approximation for the binomial distribution.
What is the test...
ADVERTISEMENT
Need Online Homework Help?
Get Answers For Free
Most questions answered within 1 hours.
ADVERTISEMENT
Active Questions
asked 1 minute ago
asked 2 minutes ago
asked 6 minutes ago
asked 7 minutes ago
asked 10 minutes ago
asked 17 minutes ago
asked 19 minutes ago
asked 19 minutes ago
asked 28 minutes ago
asked 32 minutes ago
asked 45 minutes ago
asked 49 minutes ago