HomeworkLib
Question

Hypotheses and Type I and II errors An ethnopsychology professor conducts a statistical study to test...

Hypotheses and Type I and II errors

An ethnopsychology professor conducts a statistical study to test her belief that Koreans in Korea have higher rates of alcoholism than Korean Americans.

QUESTION 1

The ethnopsychologist formulates the null hypothesis as:

A) The proportion of Koreans living in Korea who are alcoholics is equal to the proportion of Korean Americans who are alcoholics.

B) The proportion of Koreans living in Korea who are alcoholics is greater than the proportion of Korean Americans who are alcoholics.

C) The proportion of Koreans living in Korea who are alcoholics is lower than or the same as the proportion of Korean Americans who are alcoholics.

D) The proportion of Koreans living in Korea who are alcoholics is less than the proportion of Korean Americans who are alcoholics.

QUESTION 2

The ethnopsychologist formulates the alternative hypothesis as:

A) The proportion of Koreans living in Korea who are alcoholics is lower than or the same as the proportion of Korean Americans who are alcoholics.

B) The proportion of Koreans living in Korea who are alcoholics is greater than or equal to the proportion of Korean Americans who are alcoholics.

C) The proportion of Koreans living in Korea who are alcoholics is greater than the proportion of Korean Americans who are alcoholics.

D) The proportion of Koreans living in Korea who are alcoholics is less than the proportion of Korean Americans who are alcoholics.

QUESTION 3

The ethnopsychologist commits a Type I error if she concludes that:

A) There is not enough evidence to infer that the proportion of Koreans living in Korea who are alcoholics is greater than the proportion of Korean Americans who are alcoholics, when it actually is greater.

B) The proportion of Koreans living in Korea who are alcoholics is greater than the proportion of Korean Americans who are alcoholics, when it actually is not.

QUESTION 4

The ethnopsychologist commits a Type II error if she concludes that:

A) There is not enough evidence to infer that the proportion of Koreans living in Korea who are alcoholics is greater than the proportion of Korean Americans who are alcoholics, when it actually is greater.

B) The proportion of Koreans living in Korea who are alcoholics is greater than the proportion of Korean Americans who are alcoholics, when it actually is not.

math   Statistics-And-Probability   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

QUESTION 1) The ethnopsychologist formulates the null hypothesis as:

Answer) The proportion of Koreans living in Korea who are alcoholics is equal to the proportion of Korean Americans who are alcoholics.

QUESTION 2) The ethnopsychologist formulates the alternative hypothesis as:

Answer) The proportion of Koreans living in Korea who are alcoholics is greater than the proportion of Korean Americans who are alcoholics.

Question 3) The ethnopsychologist commits a Type I error if she concludes that:

Answer) The proportion of Koreans living in Korea who are alcoholics is greater than the proportion of Korean Americans who are alcoholics, when it actually is not.

Question 4) The ethnopsychologist commits a Type II error if she concludes that:

Answer) There is not enough evidence to infer that the proportion of Koreans living in Korea who are alcoholics is greater than the proportion of Korean Americans who are alcoholics, when it actually is greater.

0 0
Add a comment
Know the answer?
Add Answer to:
Hypotheses and Type I and II errors An ethnopsychology professor conducts a statistical study to test...
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. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions

  • 1. Given that the 90% confidence interval for the mean is from –0.34 to 7.28, how...

    1. Given that the 90% confidence interval for the mean is from –0.34 to 7.28, how many integers would not be rejected as plausible values for the population mean for a two-tailed hypothesis test at a 10% significance level? _____integers would not be rejected. 2. Use a sample of 15 games each to see if your average score at Wii tennis is significantly greater than your friend’s average score. Describe what it means in that context to make a Type...

  • Identify the type I error and the type II error that correspond to the given hypothesis....

    Identify the type I error and the type II error that correspond to the given hypothesis. The percentage of college students who own college students who own cars is less than 35%. Identify the type I error. Choose the correct answer below. A. Reject the null hypothesis that the percentage of college students who own cars is less than 35% when that percentage is actually less than 35%. B. Fail to reject the null hypothesis that the percentage of college...

  • Identify the type I error and the type II error that corresponds to the given hypothesis....

    Identify the type I error and the type II error that corresponds to the given hypothesis. The proportion of settled medical malpractice suits is 0.24. Which is a type I error? A. Reject the claim that the proportion of settled malpractice suits is 0.24 when the proportion is actually different from 0.24. B. Reject the claim that the proportion of settled malpractice suits is 0.24 when the proportion is actually 0.24. C. Fail to reject the claim that the proportion...

  • Please help Describe type I and type Il errors for a hypothesis test of the indicated...

    Please help Describe type I and type Il errors for a hypothesis test of the indicated claim. A clothing store claims that at least 80% of its new customers will return to buy their next article of clothing. Describe the type error. Choose the correct answer below. O A. A type I error will occur when the actual proportion of new customers who return to buy their next article of clothing is no more than 0.80, but you reject Ho:ps...

  • The notion of Type I and Type II Errors is very important in hypothesis testing. The...

    The notion of Type I and Type II Errors is very important in hypothesis testing. The Ho/Ha should be set up such that a Type I Error is more serious than a Type II Error. A common example used to discuss Type I and Type II errors is the example of a trial in the US. Under US law, a defendant is considered "innocent until proven guilty." You could set up this hypothesis test as follows:                                           Ho: defendent is...

  • dentify the type I error and the type II error that correspond to the given hypothesis....

    dentify the type I error and the type II error that correspond to the given hypothesis. The percentage of college students who owncollege students who own carscars is greatergreater thanthan 35 %35%. Identify the type I error. Choose the correct answer below. A. Reject the null hypothesis that the percentage of college students who owncollege students who own carscars is greatergreater thanthan 35 %35% when that percentage is actually greatergreater thanthan 35 %35%. B. Reject the null hypothesis that the...

  • 6) For the following problems, identify the hypotheses, define Type I and Type II errors, and...

    6) For the following problems, identify the hypotheses, define Type I and Type II errors, and discuss the consequences of each error. (When you set up the hypotheses, consider which is the hypothesis you are ”trying to prove”, and that is your alternative. The null hypothesis is then the status quo.) a. The FDA judges the safety of new drugs. When faced with a new drug, there are two possible decisions: approve the drug or disapprove the drug. b. You...

  • 12 (a). Explain type I error and type II error in hypothesis. b) Test the hypothesis...

    12 (a). Explain type I error and type II error in hypothesis. b) Test the hypothesis using H0 : p=0.6 versus H1 : p is greater than 0.6                             If n=300; x = 75; α= 0.01  

  • Question 15 (1 point) Your friend tells you that the proportion of active Major League Baseball...

    Question 15 (1 point) Your friend tells you that the proportion of active Major League Baseball players who have a batting average greater than .300 is different from 0.72, a claim you would like to test. The hypotheses here are Null Hypothesis: p = 0.72, Alternative Hypothesis: p ≠ 0.72. If you take a random sample of players and calculate p-value for your hypothesis test of 0.2296, what is the appropriate conclusion? Conclude at the 5% level of significance. Question...

  • Classify the conclusion of the hypothesis test as a Type I error, a Type II error,...

    Classify the conclusion of the hypothesis test as a Type I error, a Type II error, or a correct decision. 6) (3 points) The maximum acceptable level of a certain toxic chemical in vegetables has been set at 0. 4 parts per million (ppm). A consumer health group measured the level of the chemical in a random sample of tomatoes obtained from one producer to determine whether the mean level of the chemical in these tomatoes exceeds the recommended limit....

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT