Questions 28-29: You have collected data on heights, in inches, from 41 males and 52 females....

Questions 28-29: You have collected data on heights, in inches, from 41 males and 52 females. The sample standard deviations for males and females are, respectively, 6.1 and 4.9.

28. Find the appropriate test statistic to test equality of variances between the genders.: *
(A) 0.2541
(B) 1.2449
(C) 1.5498
(D) 7.5939

29. On what distribution would you obtain the p-value?: *
(A) The F distribution with degrees of freedom 41 and 52.
(B) The T distribution with degrees of freedom 91.
(C) The T distribution with degrees of freedom 40.
(D) The chi-square distribution with degrees of freedom 1.
(E) The F distribution with degrees of freedom 40 and 51.

30. You conduct a two-tailed hypothesis test, which turns out to be significant at α = 0.03. A corresponding confidence interval for the same test would have what confidence?: *
(A) 3%
(B) 95%
(C) 97%
(D) 97.5%

Solutions

Expert Solution

orchestra answered 1 year ago

Next > < Previous

Related Solutions

For this assignment, use data from W1 Assignment. Compute a t-test comparing males' and females' heights....

For this assignment, use data from W1 Assignment. Compute a t-test comparing males' and females' heights. You must determine which type of t-test to compute. Move your output into a Microsoft Word document and write a one-paragraph, APA-formatted interpretation of the results. Participant ID Age Sex Height Year in college 1 18 f 60 freshman 2 17 f 61 freshman 3 18 f 62 freshman 4 18 f 63 freshman 5 23 f 66 freshman 6 25 m 65 freshman ...

For Questions 1-4 , use the table below. It is data for the heights (inches) for...

For Questions 1-4 , use the table below. It is data for the heights (inches) for Ms. Smith’s 4th grade class. Student Height (inches) Student Height (inches) 1 47 11 53 2 47 12 54 3 47 13 55 4 49 14 56 5 50 15 59 6 51 16 59 7 51 17 60 8 52 18 60 9 52 19 60 10 52 20 91 The median height of the students is 42.32 52.50 54.45 58.35 The standard...

A statistics class collected data about male and female heights. The sample of 143 females had...

A statistics class collected data about male and female heights. The sample of 143 females had a mean height of 64 inches with a standard deviation of 2.84 inches. Assuming that the standard deviation of all such female heights is 2.60 inches, use a 0.05 significance level to test the claim that women’s heights have a mean different from 63.8 inches. We are testing the claim about a (mean, proportion, standard deviation): ______________________ Which test will you use (proportion, z-test,...

Who are better drivers’ males or females? Here are some relevant statistics from the data in...

Who are better drivers’ males or females? Here are some relevant statistics from the data in 2015: Drivers Total Involved Drivers Drivers in Fatal Collisions Drivers in Serious Injury Collisions Drivers in Minor Injury Collisions Drivers in Property Damage Only Collisions Drivers in Unknown Injury Collisions Males 114,297 541 1,751 35,374 75,742 889 Females 81,924 226 790 27,901 52,425 582 Total 196,221 767 2,541 63,275 128,167 1,471 a) Exploratory Data Analysis Presence of data analysis and graphs Discussion of results...

You have collected data for 104 countries to address the difficult questions of the determinants for...

You have collected data for 104 countries to address the difficult questions of the determinants for differences in the standard of living among the countries of the world. Your model has the relative personal income (RelPersInc) determined by the saving rate (SK) and population growth rate (n). To test the predictions of this growth model, you run the following regression: = 0.339 – 12.894 × n + 1.397 × SK, R2=0.621 (0.068) (3.177) (0.229) Numbers in parentheses are the...

On average, do males start smoking at an earlier grade than females? Data from 94 12th...

On average, do males start smoking at an earlier grade than females? Data from 94 12th grade boys that smoke and 108 12th grade females that smoke found that the mean grade of first use of cigarettes was 9.87 for boys (standard deviation of 1.75), and 10.17 for girls (standard deviation of 1.69). a) Is this sufficient evidence at alpha =.05 that the mean grade for first-time cigarette use is lower for boys than for girls? (10 points) b) Calculate...

Given: Assume you have collected data from 150 subjects, and that the distribution of the data...

Given: Assume you have collected data from 150 subjects, and that the distribution of the data is a "normal" distribution. The mean of the scores is 37, with a standard deviation of 4.5. Using the given information, calculate the 68% confidence interval. A confidence interval represents a range of values, the lowest value is references as the "lower bound", the highest value is referenced as the "upper bound". Determine the lower and upper bounds for the 68% confidence interval. Round...

Use the heights from the SCC data to answer the following questions. Men are to use...

Use the heights from the SCC data to answer the following questions. Men are to use the male data, and women are to use the female data (only answer the questions for ONE set of data, not both). 2. State the following for the SCC sample female/male heights. a. Sample size (n) b. Sample mean (?̅) c. Sample standard deviation (s) 3. Use the sample to make a point estimate of the mean height of the entire female/male SCC student...

Use the heights from the SCC data to answer the following questions. Men are to use...

Use the heights from the SCC data to answer the following questions. Men are to use the male data, and women are to use the female data (only answer the questions for ONE set of data, not both). 2. State the following for the SCC sample male heights. a. Sample size (n) b. Sample mean (?̅) c. Sample standard deviation (s male Student # Gender Height Shoe Age Hand 1 M 67 10 19 R 2 M 74 12 17...

Let's say you have collected data from a large sample of participants on some variable that...

Let's say you have collected data from a large sample of participants on some variable that you think is normally distributed. In this case use IQ scores. Describe the variable and state whether the scale of measurement is nominal, ordinal, interval, or ratio, and why you came to that conclusion. What does it mean to say the variable is normally distributed? What is probability value and explain how a probability value of .05 in your example is related to the...

Subjects