Question

Two studies were conducted, study A had a power of 0.75 and study B had a...

Two studies were conducted, study A had a power of 0.75 and study B had a power of 0.45. Which study would be more likely to support the true alternative hypothesis Ha ?

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

Homework Answers

Answer #1

As we know the power of test is defined as probability of rejecting null hypothesis when alternative hypothesis is true.

If we have power= 0.75 this means the probability of rejecting null hypothesis is 0.75. when alternative is true. This means with 0.75 probability it is accepting true alternative hypothesis.

If power = 0.25, this shows with 0.25 probability it is accepting true alternative hypothesis.

Therefore Study A is more likely to support the true alternative hypothesis Ha.

Cheers !

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
Two studies were conducted to examine the number of hours per week spent in Blackboard and...
Two studies were conducted to examine the number of hours per week spent in Blackboard and the final grade in a course. The significance (alpha) level was set to be .05 in both studies. Study 1 obtained a result of  r = .40, p = .08;Study 2 yielded a result of  r = .35, p = .04. Which of the following is an accurate comparison between the two studies? Study 2 showed a larger effect size than study 1. Study 1 showed...
The National Cancer Institute conducted a 2-year study to determine whether cancer death rates for areas...
The National Cancer Institute conducted a 2-year study to determine whether cancer death rates for areas near nuclear power plants are higher than for areas without nuclear facilities. A spokesperson for the Cancer Institute said, "From the data at hand, there was no convincing evidence of any increased risk of death from any of the cancers surveyed due to living near nuclear facilities.” (1 points for each)    Let p denote the proportion of the population in areas near nuclear...
The National Cancer Institute conducted a 2-year study to determine whether cancer death rates for areas...
The National Cancer Institute conducted a 2-year study to determine whether cancer death rates for areas near nuclear power plants are higher than for areas without nuclear facilities. A spokesperson for the Cancer Institute said, "From the data at hand, there was no convincing evidence of any increased risk of death from any of the cancers surveyed due to living near nuclear facilities.” (1 points for each)    Let p denote the proportion of the population in areas near nuclear...
A two arm study has been conducted in which participants are randomised to receive a current...
A two arm study has been conducted in which participants are randomised to receive a current treatment or a new treatment, with equal number in each treatment arm. The primary result of the study is the proportion of participants who exhibit at-least a 4-fold rise in serum antibody level from pre-treatment to 28 days post-treatment. (a) Write down the null and alternative hypothesis to test whether the proportion duffers between treatments. Discuss briefly whether you think a one or two...
A study was conducted in which two types of engines, A and B, were compared.Gas mileage,...
A study was conducted in which two types of engines, A and B, were compared.Gas mileage, in miles per gallon, was measured. 36 experiments were conducted using engine type A and 49 experiments were done with engine type B. The gasoline used and other conditions were held constant. The average gas mileage was 26 miles per gallon for engine A and 32 miles per gallon for engine B. Find a 90% confidence interval on μB − μA, where μA and...
Two researchers conducted a study in which two groups of students were asked to answer 42...
Two researchers conducted a study in which two groups of students were asked to answer 42 trivia questions from a board game. The students in group 1 were asked to spend 5 minutes thinking about what it would mean to be a​ professor, while the students in group 2 were asked to think about soccer hooligans. These pretest thoughts are a form of priming. The 200 students in group 1 had a mean score of 26.3 with a standard deviation...
Two researchers conducted a study in which two groups of students were asked to answer 42...
Two researchers conducted a study in which two groups of students were asked to answer 42 trivia questions from a board game. The students in group 1 were asked to spend 5 minutes thinking about what it would mean to be a​ professor, while the students in group 2 were asked to think about soccer hooligans. These pretest thoughts are a form of priming. The 200 students in group 1 had a mean score of 22.3 with a standard deviation...
A study was conducted to determine if the salaries of librarians from two neighboring cities were...
A study was conducted to determine if the salaries of librarians from two neighboring cities were equal. A sample of 15 librarians from each city was randomly selected. The mean from the first city was $28,900 with a standard deviation of $2300. The mean from the second city was $30,300 with a standard deviation of $2100. Test the hypothesis that the salaries from both cities are equal. Use α = 0.025. State the null and alternative hypotheses. p value ,...
Two researchers conducted a study in which two groups of students were asked to answer 42...
Two researchers conducted a study in which two groups of students were asked to answer 42 trivia questions from a board game. The students in group 1 were asked to spend 5 minutes thinking about what it would mean to be a​ professor, while the students in group 2 were asked to think about soccer hooligans. These pretest thoughts are a form of priming. The 200 students in group 1 had a mean score of 22.9 with a standard deviation...
Two researchers conducted a study in which two groups of students were asked to answer 42...
Two researchers conducted a study in which two groups of students were asked to answer 42 trivia questions from a board game. The students in group 1 were asked to spend 5 minutes thinking about what it would mean to be a​ professor, while the students in group 2 were asked to think about soccer hooligans. These pretest thoughts are a form of priming. The 200 students in group 1 had a mean score of 22.8 with a standard deviation...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT