In an election, 40% of the electorate voted for the Blue party, 30% for the Red...
In an election, 40% of the electorate voted for the Blue party, 30% for the Red party, 20% for the Yellow, 6% for the Green, and 4% for the White party.
a. A recent poll of 1450 respondents found that 25% support the Red party. Test whether this is sufficient evidence to conclude that the level of support has dropped since the election. Use the 5% level of significance.
b. In part a, suppose you want to estimate the national level of support for the Red using a 95% confidence interval with a standard of error (within) 1%. What sample size would be required?
c. Suppose that, in a random sample of 21 university students, only 5 indicated a preference for the Red party. Test whether this is sufficient evidence to indicate that the level of support for the Red among the university students is higher than the 30% share of the popular vote in the election. Use the 0.05 level of significance.
Homework Answers
Add Answer to:
In an election, 40% of the electorate voted for the Blue party,
30% for the Red...
The government of Preon (a small island nation) was voted in at the last election with...
The government of Preon (a small island nation) was voted in at the last election with 56% of the votes. That was 2 years ago, and ever since then the government has assumed that their approval rating has been the same. Some recent events have affected public opinion and the government suspects that their approval rating might have changed. They decide to run a hypothesis test for the proportion of people who would still vote for them. The null and...
The government of Preon (a small island nation) was voted in at the last election with...
The government of Preon (a small island nation) was voted in at the last election with 70% of the votes. That was 2 years ago, and ever since then the government has assumed that their approval rating has been the same. Some recent events have affected public opinion and the government suspects that their approval rating might have changed. They decide to run a hypothesis test for the proportion of people who would still vote for them. The null and...
Only 18% of registered voters voted in the last election. Will voter participation increase for the...
Only 18% of registered voters voted in the last election. Will voter participation increase for the upcoming election? Of the 352 randomly selected registered voters surveyed, 77 of them will vote in the upcoming election. What can be concluded at the α= 0.05 level of significance? For this study, we should use Select an answer t-test for a population mean or z-test for a population proportion The null and alternative hypotheses would be: H0:? μ p Select an answer ≠...
Only 14% ofregistered voters voted in the last election will voter participation change for the upcoming election? Of the 369 randomly selected registered voters surveyed, 63 of them will vote in...
Only 14% ofregistered voters voted in the last election will voter participation change for the upcoming election? Of the 369 randomly selected registered voters surveyed, 63 of them will vote in the upcoming election. What can be concluded at the α-0.01 level of significance? a. For this study, what sampling distribution would be used? Select an answer b-The null and alternative hypotheses would be: (please enter a decimal) Hİ : [pvi-[ (Please enter a decimal) c. The test statistic? d....
3. Suppose a researcher believes that college faculty vote at higher rate than college students. She...
3. Suppose a researcher believes that college faculty vote at higher rate than college students. She collects data from 200 college faculty and 200 college students using simple random sampling. If 167 of the faculty and 138 of the students voted in the 2008 Presidential election, (A) Find a 90% confidence interval for the difference between the proportion of faculty and the proportion of students who vote. (b) Is there enough evidence at the 3% level of significance to support...
A sport preference poll yielded the following data for men and women. Use a 5% significance...
A sport preference poll yielded the following data for men and women. Use a 5% significance level and test to determine if sport preference and gender are independent. Basketball Football Soccer Men 20 25 30 75 Women 18 12 15 45 38 45 120 What is the test value for this hypothesis test? (Round your answer to two decimal places) What is the critical value for this hypothesis test? (Round your answer to two decimal places) What is the conclusion...
l. and found that participants wearing red outfits won significantly more often than those wearing blue...
l. and found that participants wearing red outfits won significantly more often than those wearing blue a. In 50 wrestling matches involving red versus blue, suppose that the red outfit won 31 times and lost 19 times. Is this result sufficient to conclude that red wins significantly more than would be expected by chance? Test at the .05 level of significance. b. In 100 matches, suppose red won 62 times and lost 38. Is this sufficient to conclude that red...
A sport preference poll yielded the following data for men and women. Use a 5% significance...
A sport preference poll yielded the following data for men and women. Use a 5% significance level and test to determine if sport preference and gender are independent. Sport Preferences of Men and Women Basketball Football Soccer Men 20 25 30 75 Women 18 12 15 45 38 37 45 120 What is the test value for this hypothesis test? Answer: Round your answer to two decimal places. What is the critical value for this hypothesis test? Answer: Round your...
4/5 Question 4 Pregnancy testingi A college student hasn't been feeling well and visits her Select...
4/5
Question 4 Pregnancy testingi A college student hasn't been feeling well and visits her Select and answer. campus health center, Based on her symptoms, the doctor suspects that she is 10 points pregnant and orders a pregnancy test. The results of this test could be considered a hypothesis test with the following hypotheses: • H,: The student is not pregnant • H: The student is pregnant. Based on the hypotheses above, which of the following statements is considered a...
In a pre election sampling research 234 did vote for the republican candidate for govemor and...
In a pre election sampling research 234 did vote for the republican candidate for govemor and 324 did not. Is there sufficient evidence to suggest that the republican candidate will lose the election (getting less than 50 % of the vote) at the .05 level? C. P .50 1. Ho hypothesis: A. P<.50 B. P2.50 D. PS.50 1. 2. Critical value A. -1.28 В. 1.28 C. 1.645 D. -1.645 2. В. -3.81 3. Test statistics C. -2.89 3. A. 2.89...
The government of Preon (a small island nation) was voted in at the last election with 56% of the votes. That was 2 years ago, and ever since then the government has assumed that their approval rating has been the same. Some recent events have affected public opinion and the government suspects that their approval rating might have changed. They decide to run a hypothesis test for the proportion of people who would still vote for them. The null and...
The government of Preon (a small island nation) was voted in at the last election with 70% of the votes. That was 2 years ago, and ever since then the government has assumed that their approval rating has been the same. Some recent events have affected public opinion and the government suspects that their approval rating might have changed. They decide to run a hypothesis test for the proportion of people who would still vote for them. The null and...
Only 14% ofregistered voters voted in the last election will voter participation change for the upcoming election? Of the 369 randomly selected registered voters surveyed, 63 of them will vote in the upcoming election. What can be concluded at the α-0.01 level of significance? a. For this study, what sampling distribution would be used? Select an answer b-The null and alternative hypotheses would be: (please enter a decimal) Hİ : [pvi-[ (Please enter a decimal) c. The test statistic? d....
3. Suppose a researcher believes that college faculty vote at higher rate than college students. She collects data from 200 college faculty and 200 college students using simple random sampling. If 167 of the faculty and 138 of the students voted in the 2008 Presidential election, (A) Find a 90% confidence interval for the difference between the proportion of faculty and the proportion of students who vote. (b) Is there enough evidence at the 3% level of significance to support...
A sport preference poll yielded the following data for men and women. Use a 5% significance level and test to determine if sport preference and gender are independent. Basketball Football Soccer Men 20 25 30 75 Women 18 12 15 45 38 45 120 What is the test value for this hypothesis test? (Round your answer to two decimal places) What is the critical value for this hypothesis test? (Round your answer to two decimal places) What is the conclusion...
l. and found that participants wearing red outfits won significantly more often than those wearing blue a. In 50 wrestling matches involving red versus blue, suppose that the red outfit won 31 times and lost 19 times. Is this result sufficient to conclude that red wins significantly more than would be expected by chance? Test at the .05 level of significance. b. In 100 matches, suppose red won 62 times and lost 38. Is this sufficient to conclude that red...
4/5
Question 4 Pregnancy testingi A college student hasn't been feeling well and visits her Select and answer. campus health center, Based on her symptoms, the doctor suspects that she is 10 points pregnant and orders a pregnancy test. The results of this test could be considered a hypothesis test with the following hypotheses: • H,: The student is not pregnant • H: The student is pregnant. Based on the hypotheses above, which of the following statements is considered a...
In a pre election sampling research 234 did vote for the republican candidate for govemor and 324 did not. Is there sufficient evidence to suggest that the republican candidate will lose the election (getting less than 50 % of the vote) at the .05 level? C. P .50 1. Ho hypothesis: A. P<.50 B. P2.50 D. PS.50 1. 2. Critical value A. -1.28 В. 1.28 C. 1.645 D. -1.645 2. В. -3.81 3. Test statistics C. -2.89 3. A. 2.89...
Most questions answered within 3 hours.
-
Using Python. Write a function clean2(aList) that takes a list
of integers aList as argument, and...
asked 4 minutes ago -
Intrapreneurship is defined as the
development of an enterprise culture with an existing (Nandan,
2009). An...
asked 17 minutes ago -
QUESTION 1 Tamiflu is a drug used to treat influenza. A study
found that Tamiflu reduced...
asked 22 minutes ago -
Which of the following would be less likely to be used to
allocate factory overhead when...
asked 27 minutes ago -
Transverse pulses travel with a speed of 195 m/s along a taut
copper wire whose diameter...
asked 26 minutes ago -
Sampling for Engineers Homework question 11.51
Suppose that Y1;Y2;Y3;Y4 denote a random sample from a
Poisson(θ)...
asked 29 minutes ago -
Which of the following is cleaved by regulated intramembrane
proteolysis (RIP)? Select any/all answers that apply....
asked 29 minutes ago -
Random characters You decide to create a program characters.py
that fills a two-dimensional list with random...
asked 41 minutes ago -
What are the major sources of error in your determination of the
molar mass? Select all...
asked 45 minutes ago -
A. Suppose your manager indicates that for a normally
distributed data set you are analyzing, your...
asked 1 hour ago -
During the month of August, the average temperature of a lake
next to a local college...
asked 48 minutes ago -
Which of these four researchers is most likely to have made Type
1 error
Kim who...
asked 1 hour ago