) In one town, monthly incomes for men with college degrees are found to have a...
) In one town, monthly incomes for men with college degrees are found to have a standard deviation of $650. Use a 0.01 significance level to test the claim that for men without college degrees in that town, incomes have a higher standard deviation. A random sample of 22 men without college degrees resulted in incomes with a standard deviation of $973.
a) State claim:
b) Test statistic: (identify to two decimals) and critical value: (identify to two decimals)
c) Conclusion about Ho:
Homework Answers
Add Answer to:
) In one town, monthly incomes for men with college
degrees are found to have a...
8) In one town, monthly incomes for men with college degrees are found to have a...
8) In one town, monthly incomes for men with college degrees are found to have a standard deviation of $650. Use a 0.01 significance level to test the claim that for men without college degrees in that town, incomes have a higher standard deviation. A random sample of 22 men without college degrees resulted in incomes with a standard deviation of $913.
In one town, monthly incomes for men with college degrees are found to have a standard...
In one town, monthly incomes for men with college degrees are found to have a standard deviation of $650. Use a 0.01 significance level to test the claim that for men without college degrees in that town, incomes have a higher standard deviation. A random sample of 22 men without college degrees resulted in incomes with a standard deviation of $913. A manufacturer uses a new production method to produce steel rods. A random sample of 17 steel rods resulted...
A manufacturer uses a new production method to produce steel rods. A random sample of 17...
A manufacturer uses a new production method to produce steel rods. A random sample of 17 steel rods resulted in lengths with a standard deviation of 4.7 cm. At the 0.10 significance level, test the claim that the new production method has lengths with a standard deviation different from 3.5 cm, which was the standard deviation for the old method In one town, monthly incomes men with college degrees are found to have a standard deviation of $650. Use a...
At a college, 61 female students were randomly selected and it was found that their monthly...
At a college, 61 female students were randomly selected and it was found that their monthly income had a standard deviation of $230.85. For 121 male students, the standard deviation was $320.53. Test the claim that variance of monthly incomes is higher for male students than it is foi female students. Use a = 0.01.
A credit score is used by credit agencies (such as mortgage companies and banks) to assess the creditworthiness of individuals. Values range from 300 to 8 individuals (incomes in excess of $10...
A credit score is used by credit agencies (such as mortgage companies and banks) to assess the creditworthiness of individuals. Values range from 300 to 8 individuals (incomes in excess of $100,000 per year) had higher credit scores. He obtained a random sample of 38 high-income individuals and found the sa α 0.05 level of significance. State the null and alternative hypotheses. Ho: μ (Type integers or decimals. Do not round.) Identify the t-statistic. to(Round to two decimal places as...
The annual incomes for a random sample of 16 engineers working in Dubai have a standard...
The annual incomes for a random sample of 16 engineers working in Dubai have a standard deviation of $14,900. The annual incomes for a random sample of 17 engineers working in Abu Dhabi have a standard deviation of $9600. Using this information, can you conclude that the standard deviation of the annual incomes for engineers is greater in Dubai than in Abu Dhabi? Use = 0:05: a. Identify the claim and state H0 and Ha: b. Find the critical value...
A student at a four-year college claims that mean enrollment at four-year colleges is higher than...
A student at a four-year college claims that mean enrollment at four-year colleges is higher than at two-year colleges in the United States. Two surveys are conducted. Of the 35 four-year colleges surveyed, the mean enrollment was 5,466 with a standard deviation of 8,191. Of the 35 two-year colleges surveyed, the mean enrollment was 5,068 with a standard deviation of 4,777. Test the student's claim at the 0.10 significance level. a) The null and alternative hypothesis would be: O Hopp...
In a sample of 88 adults selected randomly from one town, it is found that 6...
In a sample of 88 adults selected randomly from one town, it is found that 6 of them have been exposed to a particular strain of the flu. At the 0.01 significance level, test the claim that the proportion of all adults in the town that have been exposed to this strain of the flue differs from the nationwide percentage of 8%. H0: p = 0.08 HA: p ≠ 0.08. α = 0.01 Test statistic: z = -0.41. P-Value =...
u A study was done on body temperatures of men and women. The results are shown...
u A study was done on body temperatures of men and women. The results are shown in the table. Assume that the two samples are independent simple random samples selected from normally distributed populations, and do not assume that the population standard deviations are equal. Complete parts (a) and (b) below. Use a 0.05 significance level for both parts Men 11 11 97.76°F 0.81°F Women 2 59 97.45°F 0.71°F S a. Test the claim that men have a higher mean...
1. The mean number of days it takes an employer to approve medical leave is believed to be about ten. Members of a...
1. The mean number of days it takes an employer to approve medical leave is believed to be about ten. Members of a collective bargaining unit do not believe this figure. They randomly survey eight employees. The number of days they took to approve medical leave are as follows: 12; 4; 15; 3; 11; 8; 6; 8. Let X = the number of days the employer took to approve medical leave. (a) Identify a null and alternative hypothesis. (b) Determine...
8) In one town, monthly incomes for men with college degrees are found to have a standard deviation of $650. Use a 0.01 significance level to test the claim that for men without college degrees in that town, incomes have a higher standard deviation. A random sample of 22 men without college degrees resulted in incomes with a standard deviation of $913.
In one town, monthly incomes for men with college degrees are found to have a standard deviation of $650. Use a 0.01 significance level to test the claim that for men without college degrees in that town, incomes have a higher standard deviation. A random sample of 22 men without college degrees resulted in incomes with a standard deviation of $913. A manufacturer uses a new production method to produce steel rods. A random sample of 17 steel rods resulted...
At a college, 61 female students were randomly selected and it was found that their monthly income had a standard deviation of $230.85. For 121 male students, the standard deviation was $320.53. Test the claim that variance of monthly incomes is higher for male students than it is foi female students. Use a = 0.01.
A credit score is used by credit agencies (such as mortgage companies and banks) to assess the creditworthiness of individuals. Values range from 300 to 8 individuals (incomes in excess of $100,000 per year) had higher credit scores. He obtained a random sample of 38 high-income individuals and found the sa α 0.05 level of significance. State the null and alternative hypotheses. Ho: μ (Type integers or decimals. Do not round.) Identify the t-statistic. to(Round to two decimal places as...
A student at a four-year college claims that mean enrollment at four-year colleges is higher than at two-year colleges in the United States. Two surveys are conducted. Of the 35 four-year colleges surveyed, the mean enrollment was 5,466 with a standard deviation of 8,191. Of the 35 two-year colleges surveyed, the mean enrollment was 5,068 with a standard deviation of 4,777. Test the student's claim at the 0.10 significance level. a) The null and alternative hypothesis would be: O Hopp...
u A study was done on body temperatures of men and women. The results are shown in the table. Assume that the two samples are independent simple random samples selected from normally distributed populations, and do not assume that the population standard deviations are equal. Complete parts (a) and (b) below. Use a 0.05 significance level for both parts Men 11 11 97.76°F 0.81°F Women 2 59 97.45°F 0.71°F S a. Test the claim that men have a higher mean...
1. The mean number of days it takes an employer to approve medical leave is believed to be about ten. Members of a collective bargaining unit do not believe this figure. They randomly survey eight employees. The number of days they took to approve medical leave are as follows: 12; 4; 15; 3; 11; 8; 6; 8. Let X = the number of days the employer took to approve medical leave. (a) Identify a null and alternative hypothesis. (b) Determine...
Most questions answered within 3 hours.
-
Do not neglect the old for the new. The existing business must
not lose priority simply...
asked 1 hour ago -
Kylie is a single mom with two dependent children,
Tanner, age 7 and Olivia, age 11....
asked 3 hours ago -
Phosphorous + bromine = phosphorous tribromide. If 35.0 g of
bromine are reacted and 27.9 grams...
asked 4 hours ago -
Derive the long wavelength limit of the Planck energy density
distribution
asked 4 hours ago -
Calculate the pH of each of the following solutions.
0.50 M HBr
3.1×10−4 M KOH
4.2×10−5...
asked 8 hours ago -
For the year ended December 31, Depot Max’s cost of merchandise
sold was $85,600. Inventory at the...
asked 8 hours ago -
Week 10 - Professional Memo Assignment
Professional Memo Assignment
Your mission for this week, should you...
asked 8 hours ago -
Write a Python program that stores the data for each
player on the team, and it...
asked 8 hours ago -
In
the last 3 months, mike never knows when he is going to get his
allowance...
asked 8 hours ago -
Is Ca(OH)2 a Bronsted base, Lewis base, or both? Why?
asked 8 hours ago -
1A- Why don’t voters complain about U.S. tariffs on imported
sugar?
Because sugar is only a...
asked 8 hours ago -
Cash Payback Period
Primera Banco is evaluating two capital investment proposals for
a drive-up ATM kiosk,...
asked 8 hours ago