Question

Identify the test statistic (the formula, not a value) that should be used for testing the...

Identify the test statistic (the formula, not a value) that should be used for testing the following given claims.

(a) The mean of the differences between IQ scores of husbands and IQ scores of their wives is equal to 0

(b) The mean age age of female CIA agents is equal to the mean age of male CIA agents

(c) The proportion of left-handed men is equal to the proportion of left-handed women

(d) The variation among pulse rates of women is equal to the variation among pulse rates of men

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

A)The test used here is t test for difference of means

The formula is

t = [ (x1 - x2) - d ] / SE

where x1 is the mean of sample 1, x2 is the mean of sample 2, d is the hypothesized difference between population means, and SE is the standard error and  

SE = sqrt[ (s12/n1) + (s22/n2) ]

where s1 is the standard deviation of sample 1, s2 is the standard deviation of sample 2, n1 is the size of sample 1, and n2 is the size of sample 2.

2)The test is t test for independent sample means

3)The test used here is z test for 2 proportions . The formula is z =

4) The test to be used here is F test for equality of two variances . The formula to be used is

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Test the given claim. Use the P-value method or the traditional method as indicated. Identify the...
Test the given claim. Use the P-value method or the traditional method as indicated. Identify the null hypothesis, alternative hypothesis, test statistic, critical value(s) or P-value, conclusion about the null hypothesis, and final conclusion that addresses the original claim. 7) The mean resting pulse rate for men is 72 beats per minute. A simple random sample of men who regularly work out at Mitch's Gym is obtained and their resting pulse rates (in beats per minute) are listed below. Use...
The Survey of Study Habits and Attitudes (SSHA) is a psychological test that measures the motivation,...
The Survey of Study Habits and Attitudes (SSHA) is a psychological test that measures the motivation, attitude toward school, and study habits of students. Scores range from 0 to 200. A selective private college gives the SSHA to a simple random sample of both male and female first-year students to study the difference in mean attitudes towards school and study habits between men and women. The data for men and women: n s Men 20 121.3 32.85 Women 18 141.1...
Consider testing ?0:?=.50H0:p=.50 ??:?<.50Ha:p<.50 If the sample information produced a test statistic of ?=−1.17z=−1.17, then p-value...
Consider testing ?0:?=.50H0:p=.50 ??:?<.50Ha:p<.50 If the sample information produced a test statistic of ?=−1.17z=−1.17, then p-value = and For each statement, select the correct null hypothesis, ?0H0, and alternative hypothesis, ??HA, in symbolic form. (a) An industry trade publication claims that the population average size of a television sold in the US is 45 inches. The owner of an appliance stores believes the actual population mean size is larger than this. The store owner randomly selected 30 recent television purchasea...
?In an article titled “Unilateral Nostril Breathing Influences Lateralized Cognitive Performance” that appeared in Brain and...
?In an article titled “Unilateral Nostril Breathing Influences Lateralized Cognitive Performance” that appeared in Brain and Cognition (1989), researchers Block et al. published results from an experiment involving assessments of spatial and verbal cognition when breathing through only the right versus left nostril. The subjects were 30 male and 30 female right-handed introductory psychology students who volunteered to participate in exchange for course credit. Initial testing on spatial and verbal tests revealed the following summary statistics. Note that the scores...
Findings  In a cohort of 2215 adults with COVID-19 who were admitted to intensive care units at...
Findings  In a cohort of 2215 adults with COVID-19 who were admitted to intensive care units at 65 sites, 784 (35.4%) died within 28 days, with wide variation among hospitals. Factors associated with death included older age, male sex, morbid obesity, coronary artery disease, cancer, acute organ dysfunction, and admission to a hospital with fewer intensive care unit beds. Meaning  This study identified demographic, clinical, and hospital-level factors associated with death in critically ill patients with COVID-19 that may be used to...
3 SECURING THE WORKFORCE Diversity management in X-tech, a Japanese organisation This case is intended to...
3 SECURING THE WORKFORCE Diversity management in X-tech, a Japanese organisation This case is intended to be used as a basis for class discussion rather than as an illustration of the effective or ineffective handling of an administrative situation. The name of the company is disguised. INTRODUCTION In light of demographic concerns, in 2012, the Japanese government initiated an effort to change the work environment in order to secure the workforce of the future. Japan is world renowned for its...
2. SECURING THE WORKFORCE Diversity management in X-tech, a Japanese organisation This case is intended to...
2. SECURING THE WORKFORCE Diversity management in X-tech, a Japanese organisation This case is intended to be used as a basis for class discussion rather than as an illustration of the effective or ineffective handling of an administrative situation. The name of the company is disguised. INTRODUCTION In light of demographic concerns, in 2012, the Japanese government initiated an effort to change the work environment in order to secure the workforce of the future. Japan is world renowned for its...
1.The sample mean is an unbiased estimator for the population mean. This means: The sample mean...
1.The sample mean is an unbiased estimator for the population mean. This means: The sample mean always equals the population mean. The average sample mean, over all possible samples, equals the population mean. The sample mean will only vary a little from the population mean. The sample mean has a normal distribution. 2.Which of the following statements is CORRECTabout the sampling distribution of the sample mean: The standard error of the sample mean will decrease as the sample size increases....
What is Medicare Part C? Provides the aged with home health care Provides the aged with...
What is Medicare Part C? Provides the aged with home health care Provides the aged with prescription drugs Enables low-income aged to participate in Medicaid Provides a voluntary managed care option for the aged How is Medicaid financed? It is financed entirely by the federal government. It is financed entirely by the state. States receive the same percentage of federal support. States with lower per capita incomes receive a greater percentage of federal support If a healthcare system is "free"...
Please summarize the below article in approximately 100 words: Monumental function in British Neolithic burial practices...
Please summarize the below article in approximately 100 words: Monumental function in British Neolithic burial practices Ian Kinnes The high-risk rate of survival for the non-megalithic series of Neolithic funerary monuments, recently re-emphasized by Piggott (1973: 34), introduces a further variable into the deductive study of burial practices. In Britain and Europe the overall distribution of monumental forms present both lacunae and a marked preponderance of cairns over earthen mounds which are in ill accord with the known or predicted...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT