Homework Answers
Add Answer to:
The average salary in this city is $41,500. Is the average less for single people? 68...
The average salary in this city is $47,200. Is the average less for single people? 50...
The average salary in this city is $47,200. Is the average less for single people? 50 randomly selected single people who were surveyed had an average salary of $44,862 and a standard deviation of $7,020. What can be concluded at the a = 0.05 level of significance? a. For this study, we should use t-test for a population mean b. The null and alternative hypotheses would be: HO: Select an answer 3 H: Select an answer C. The test statistict...
a) The average salary in this city is $43,000. Is the average less for single people?...
a)
The average salary in this city is $43,000. Is the average less for single people? 70 randomly selected single people who were surveyed had an average salary of $41,011 and a standard deviation of $8,900. a) What is the Null and alternative hypotheses. b) What can be concluded at the a = 0.05 level of significance? c) In words what is your final conclusion. If n=132, 7 = 34, and s = 9, find the margin of error at...
Only about 18% of all people can wiggle their ears. Is this percent higher for millionaires?...
Only about 18% of all people can wiggle their ears. Is this percent higher for millionaires? Of the 345 millionaires surveyed, 79 could wiggle their ears. What can be concluded at the a = 0.01 level of significance? a. For this study, we should use z-test for a population proportion b. The null and alternative hypotheses would be: HO: р (please enter a decimal) o H, (Please enter a decimal) a om C. The test statistic (please show your answer...
only C. and D. The average American consumes 95 liters of alcohol per year. Does the...
only C. and D.
The average American consumes 95 liters of alcohol per year. Does the average college student consume more alcohol per year? A researcher surveyed 11 randomly selected college students and found that they averaged 108.5 liters of alcohol consumed per year with a standard deviation of 18 liters. What can be concluded at the the a = 0.10 level of significance? a. For this study, we should use t-test for a population mean b. The null and...
Nationally, patients who go to the emergency room wait an average of 6 hours to be...
Nationally, patients who go to the emergency room wait an average of 6 hours to be admitted into the hospital. Do patients at rural hospitals have a lower waiting time? The 14 randomly selected patients who went to the emergency room at rural hospitals waited an average of 4.6 hours to be admitted into the hospital. The standard deviation for these 14 patients was 2.4 hours. What can be concluded at the the a = 0.05 level of significance level...
A sporting goods store believes the average age of its customers is 38 or less. A...
A sporting goods store believes the average age of its customers is 38 or less. A random sample of 39 customers years. Using a = 0.01, complete parts a and b below. a. Does the sample provide enough evidence to refute the age claim made by the sporting goods store? Determine the null and alternative hypotheses. Нор Hyu The z-test statistic is (Round to two decimal places as needed.) The critical z-score(s) is(are) (Round to two decimal places as needed....
pls help The commercial for the new Meat Man Barbecue claims that it takes 10 minutes...
pls help
The commercial for the new Meat Man Barbecue claims that it takes 10 minutes for assembly. A consumer advocate thinks that the assembly time is higher than 10 minutes. The advocate surveyed 13 randomly selected people who purchased the Meat Man Barbecue and found that their average time was 11.6 minutes. The standard deviation for this survey group was 2.3 minutes. What can be concluded at the the a = 0.05 level of significance level of significance? Show...
Do men score lower on average compared to women on their statistics finals? Final exam scores...
Do men score lower on average compared to women on their statistics finals? Final exam scores of twelve randomly selected male statistics students and twelve randomly selected female statistics students are shown below. Male: 74 62 81 68 82 77 85 61 67 87 66 83 Female: 959973 78 92 84 82 78 81 90 78 67 Assume both follow a Normal distribution. What can be concluded at the the a=0.01 level of significance level of significance? For this study,...
City A $359.91 31 City B $380.05 The data to the right show the average monthly...
City A $359.91 31 City B $380.05 The data to the right show the average monthly utility bills for a random sample of households in City A and for a random sample of households in City B. 38 Sample mean Sample size Population standard deviation $54 $65 a. Perform a hypothesis test using a = 0.05 to determine if there is a difference between the mean utility bills in these two cities. b. Determine the p-value and interpret the results....
A news article that you read stated that 52% of voters prefer the Democratic candidate. You...
A news article that you read stated that 52% of voters prefer the Democratic candidate. You think that the actual percent is smaller. 117 of the 244 voters that you surveyed said that they prefer the Democratic candidate. What can be concluded at the 0.10 level of significance? a. For this study, we should usez-test for a population proportion b. The null and alternative hypotheses would be: Ho: B (please enter a decimal) Ha: (Please enter a decimal) 9 C....
The average salary in this city is $47,200. Is the average less for single people? 50 randomly selected single people who were surveyed had an average salary of $44,862 and a standard deviation of $7,020. What can be concluded at the a = 0.05 level of significance? a. For this study, we should use t-test for a population mean b. The null and alternative hypotheses would be: HO: Select an answer 3 H: Select an answer C. The test statistict...
a)
The average salary in this city is $43,000. Is the average less for single people? 70 randomly selected single people who were surveyed had an average salary of $41,011 and a standard deviation of $8,900. a) What is the Null and alternative hypotheses. b) What can be concluded at the a = 0.05 level of significance? c) In words what is your final conclusion. If n=132, 7 = 34, and s = 9, find the margin of error at...
Only about 18% of all people can wiggle their ears. Is this percent higher for millionaires? Of the 345 millionaires surveyed, 79 could wiggle their ears. What can be concluded at the a = 0.01 level of significance? a. For this study, we should use z-test for a population proportion b. The null and alternative hypotheses would be: HO: р (please enter a decimal) o H, (Please enter a decimal) a om C. The test statistic (please show your answer...
only C. and D.
The average American consumes 95 liters of alcohol per year. Does the average college student consume more alcohol per year? A researcher surveyed 11 randomly selected college students and found that they averaged 108.5 liters of alcohol consumed per year with a standard deviation of 18 liters. What can be concluded at the the a = 0.10 level of significance? a. For this study, we should use t-test for a population mean b. The null and...
Nationally, patients who go to the emergency room wait an average of 6 hours to be admitted into the hospital. Do patients at rural hospitals have a lower waiting time? The 14 randomly selected patients who went to the emergency room at rural hospitals waited an average of 4.6 hours to be admitted into the hospital. The standard deviation for these 14 patients was 2.4 hours. What can be concluded at the the a = 0.05 level of significance level...
A sporting goods store believes the average age of its customers is 38 or less. A random sample of 39 customers years. Using a = 0.01, complete parts a and b below. a. Does the sample provide enough evidence to refute the age claim made by the sporting goods store? Determine the null and alternative hypotheses. Нор Hyu The z-test statistic is (Round to two decimal places as needed.) The critical z-score(s) is(are) (Round to two decimal places as needed....
pls help
The commercial for the new Meat Man Barbecue claims that it takes 10 minutes for assembly. A consumer advocate thinks that the assembly time is higher than 10 minutes. The advocate surveyed 13 randomly selected people who purchased the Meat Man Barbecue and found that their average time was 11.6 minutes. The standard deviation for this survey group was 2.3 minutes. What can be concluded at the the a = 0.05 level of significance level of significance? Show...
Do men score lower on average compared to women on their statistics finals? Final exam scores of twelve randomly selected male statistics students and twelve randomly selected female statistics students are shown below. Male: 74 62 81 68 82 77 85 61 67 87 66 83 Female: 959973 78 92 84 82 78 81 90 78 67 Assume both follow a Normal distribution. What can be concluded at the the a=0.01 level of significance level of significance? For this study,...
City A $359.91 31 City B $380.05 The data to the right show the average monthly utility bills for a random sample of households in City A and for a random sample of households in City B. 38 Sample mean Sample size Population standard deviation $54 $65 a. Perform a hypothesis test using a = 0.05 to determine if there is a difference between the mean utility bills in these two cities. b. Determine the p-value and interpret the results....
A news article that you read stated that 52% of voters prefer the Democratic candidate. You think that the actual percent is smaller. 117 of the 244 voters that you surveyed said that they prefer the Democratic candidate. What can be concluded at the 0.10 level of significance? a. For this study, we should usez-test for a population proportion b. The null and alternative hypotheses would be: Ho: B (please enter a decimal) Ha: (Please enter a decimal) 9 C....
Most questions answered within 3 hours.
-
Use the following information to answer the next three
questions.
QUESTION 5
As of today, the...
asked 4 minutes ago -
Using the specific identification method: Date Units purchased
Cost per unit Ending inventory March 1 15...
asked 7 minutes ago -
PLEASE HELP, NO ONE IS ANSWERING MY QUESTION AND IT IS SUE TODAY
WORTH 20% OF...
asked 21 minutes ago -
α = 0.0007889 T, I = 2.9 A
Other Magnetic Fields: First, based on your
value...
asked 21 minutes ago -
This assignment is a continuation of the 2nd one. You as a HR
Manager, select an...
asked 23 minutes ago -
Hastings Entertainment has a beta of 0.64. If the market return
is expected to be 13.80...
asked 34 minutes ago -
9. Depository institutions are always:
a. illiquid
b. profitable
c. insolvent
d. all of the above...
asked 43 minutes ago -
Use AstroTurf Company's income statement below to answer the
following two questions. Answer these questions with...
asked 42 minutes ago -
How is a firm's task
environment different from its general environment? Provide
examples of both types...
asked 41 minutes ago -
What is one reason Innovators can adopt innovations so
early?
Group of answer choices
they are...
asked 43 minutes ago -
Show that min x^2, s.t. x>=2 has strong duality.
asked 43 minutes ago -
Using curved arrows show how the intermediate formed in this
reaction (Hexaphenylbenzene is prepared through a...
asked 49 minutes ago