The census data states that one city has 52% women, 48% men with an average weight...
The census data states that one city has 52% women, 48% men with an average weight of 150 lbs, with an SD of 10. If possible, test all hypotheses at the 5% significance level.
a) You wish to test if the percent of women is correct, against the alternate that there is a lower percentage of women. You take a simple random sample of 10 people and find that 50% are women.
b) You wish to test if the weight is correct, against the alternate that the average is actually larger. You take a simple random sample of 10 people, which has an average weight of 160 lbs, with an SD of 15. You may assume weights follow normal curves.
c) You want to know if a district in the city has a larger average weight. You take a simple random sample of 10 people from the district, which has an average 155 with an SD of 15. (Note this problem has the same numbers as part b). What is different?)
Homework Answers
Request Answer!
We need at least 10 more requests to produce the answer.
0 / 10 have requested this problem solution
The more requests, the faster the answer.
Add Answer to:
The census data states that one city has 52% women, 48% men with
an average weight...
If there are pay differences between men and women, discrimination has been given as one possible...
If there are pay differences between men and women, discrimination has been given as one possible reason or interpretation of this difference. Using what you have learned about variability within a group, answer the following questions to see if there might be alternate interpretations: 1) Is there a particular group of women within the larger group of women that might be lowering the overall pay average for women? 2) Is there a particular group of men with in the larger...
9. One hundred men and one hundred women are surveyed to determine if the percent of...
9. One hundred men and one hundred women are surveyed to determine if the percent of women that lie about their weight is the same as the percent of men, or if the percent of women is higher than the percent of men. The hypothesis test to use is ______________. a. independent group means, population standard deviations known b. two proportions c. independent group means, population standard deviations unknown d. matched or paired samples 10. Fourteen cars from two different...
Suppose we want to estimate the average weight of children in a particular school district. The...
Suppose we want to estimate the average weight of children in a particular school district. The district contains 15 elementary schools, 10 middle schools, and 2 high schools. For each of the following approaches, select the best description of the sampling design, and identify whether the sampling scheme ensures that the probability of being included is necessarily the same for every student. Take a simple random sample of 5 schools in the district. For each school in the sample, list...
3. Suppose you are asked to draw a random sample of men and women in order...
3. Suppose you are asked to draw a random sample of men and women in order to measure their "emotional IQ'. The emotional IQ scale that you administer has a minimum of 0 and a maximum of 100, with higher scores indicating higher emotional intelligence. You sample 25 men and 25 women. The mean for men is 70 with a standard deviation of 10, and the mean for women is 82 with a standard deviation of 15. Using this information,...
The accuracy of a census report on a city in southern California was questioned by some...
The accuracy of a census report on a city in southern California
was questioned by some government officials. A random sample of
1215 people living in the city was used to check the report, and
the results are shown below.
Ethnic
Origin
Census
Percent
Sample
Result
Black
10%
128
Asian
3%
45
Anglo
38%
478
Latino/Latina
41%
492
Native American
6%
60
All others
2%
12
Using a 1% level of significance, test the claim that the census
distribution and...
The accuracy of a census report on a city in southern California was questioned by some...
The accuracy of a census report on a city in southern California was questioned by some government officials. A random sample of 1215 people living in the city was used to check the report, and the results are shown below. Ethnic Origin Census Percent Sample Result Black 10% 130 Asian 3% 35 Anglo 38% 462 Latino/Latina 41% 516 Native American 6% 62 All others 2% 10 Using a 1% level of significance, test the claim that the census distribution and...
Can anybody help me solve these? 1. Suppose the average number of hours worked per week...
Can anybody help me solve these? 1. Suppose the average number of hours worked per week for high-school aged teens in the US is 17 hours per week with a standard deviation of 4 hours. A high school teacher working at an inner city high school is concerned about the time students spend working at after school jobs. She randomly selects 15 of her students and records the number of hours they spend working each week. Supposing that her students...
A new virus has been sweeping across the U.S. Health officials are interested in the average...
A new virus has been sweeping across the U.S. Health officials
are interested in the average ages of men and women who end up
infected with the virus. In a random sample of 200 men with the
virus their average age was 60 years old with a standard deviation
15 years. In a random sample of 250 women with the virus their
average age was 64 years old with a standard deviation of 10 years.
Test whether the actual average...
The mayor of a small city (of approximately 60,000 people) has been requested to sign off...
The mayor of a small city (of approximately 60,000 people) has been requested to sign off on a new casino to be built near the city. Casinos being built are usually contentious affairs as some citizens worry it can encourage gambling addiction and attract unwanted people to the community while others believe it can bring an economic boom to the city. As such, the mayor is interested in the townspeople’s view of having the new casino built; specifically whether or...
Below are the cash receipts in dollars for ice cream vendors at two locations at a city beach: 6.10 North 290.15 183.75 205.35 193.86 256.89 201.15 207.99 299.23 235.18 South 188.86 202.45 215.35 18...
Below are the cash receipts in dollars for ice cream vendors at two locations at a city beach: 6.10 North 290.15 183.75 205.35 193.86 256.89 201.15 207.99 299.23 235.18 South 188.86 202.45 215.35 180.77 200.45 205.65 157.84 295.46 201.35 Assuming the differences of daily receipts are independent, test the hypothesis that cash receipts for the north location are usually greater than for the south location against the null hypothesis that the median difference is 0. Use the sign test at...
3. Suppose you are asked to draw a random sample of men and women in order to measure their "emotional IQ'. The emotional IQ scale that you administer has a minimum of 0 and a maximum of 100, with higher scores indicating higher emotional intelligence. You sample 25 men and 25 women. The mean for men is 70 with a standard deviation of 10, and the mean for women is 82 with a standard deviation of 15. Using this information,...
The accuracy of a census report on a city in southern California
was questioned by some government officials. A random sample of
1215 people living in the city was used to check the report, and
the results are shown below.
Ethnic
Origin
Census
Percent
Sample
Result
Black
10%
128
Asian
3%
45
Anglo
38%
478
Latino/Latina
41%
492
Native American
6%
60
All others
2%
12
Using a 1% level of significance, test the claim that the census
distribution and...
A new virus has been sweeping across the U.S. Health officials
are interested in the average ages of men and women who end up
infected with the virus. In a random sample of 200 men with the
virus their average age was 60 years old with a standard deviation
15 years. In a random sample of 250 women with the virus their
average age was 64 years old with a standard deviation of 10 years.
Test whether the actual average...
Below are the cash receipts in dollars for ice cream vendors at two locations at a city beach: 6.10 North 290.15 183.75 205.35 193.86 256.89 201.15 207.99 299.23 235.18 South 188.86 202.45 215.35 180.77 200.45 205.65 157.84 295.46 201.35 Assuming the differences of daily receipts are independent, test the hypothesis that cash receipts for the north location are usually greater than for the south location against the null hypothesis that the median difference is 0. Use the sign test at...
Most questions answered within 3 hours.
-
Question 8 Interactive LearningWare 26.2 offers a review of the
concepts that play roles in this...
asked 1 minute ago -
draw product of cyclohex-2-en-1-one, Sodium methoxide and
hydronium workup
asked 9 minutes ago -
In a certain state, about 65% of drivers who are arrested for
driving while intoxicated (DWI)...
asked 10 minutes ago -
A single NEC SX-9 vector processor unit (VPU) has a peak
arithmetic
performance of 102.4 GFs/s....
asked 28 minutes ago -
. Determine the hourly multiplication factors
such that the total daily water consumption will equal 15,000...
asked 29 minutes ago -
A budgeting Web site reported that 35% of U.S. households have
withdrawn money from a 401(k)...
asked 28 minutes ago -
In this assignment, you will write a minimum two-page paper that
explains the treatment of internal...
asked 32 minutes ago -
Direct marketing is also referred to as Question 50 options: 1)
one-to-one marketing. 2) business-customer marketing....
asked 35 minutes ago -
INK Ltd is grocery retailer with 103 shops around South
Australia and Tasmania. The company has...
asked 40 minutes ago -
HOW BEER IS MADE
The beer making process is an art. It takes time, patience and...
asked 41 minutes ago -
What two methods could be used to purify the dimethyl
fumarate?
Based on the 12 Principles...
asked 50 minutes ago -
Reflect upon the readings and videos as well as our Media Monday
discussion. Integrating concepts from...
asked 55 minutes ago