Question

12.) A research company claims that 60% or more graduate students have bought online merchandise. A...

12.) A research company claims that 60% or more graduate students have bought online merchandise. A consumer group is sus of the claim and thinks that the proportion is lower than 60%. A random sample of 80 graduate students show that only 22 students have ever done so. Is there enough evidence to show that the true proportion is lower than 60%? Conduct the test at 10% Type I error rate, and use the p-value and rejection region approaches.

0 0
Add a comment Improve this question Transcribed image text
Know the answer?
Add Answer to:
12.) A research company claims that 60% or more graduate students have bought online merchandise. A...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

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
  • An e-commerce research company claims that 60% or more graduate students have bought merchandise on-line. A...

    An e-commerce research company claims that 60% or more graduate students have bought merchandise on-line. A consumer group is suspicious of the claim and thinks that the proportion is lower than 60%. A random sample of 80 graduate students show that only 22 students have ever done so. Is there enough evidence to show that the true proportion is lower than 60%? Conduct the test at 10% Type I error rate, and use both p-value and rejection region approaches. **Make...

  • QUESTION 13 An con merce research company claims that 60% or more graduate students have bought...

    QUESTION 13 An con merce research company claims that 60% or more graduate students have bought merchandise on ine. A consumer group is suspicious of the claim and thinks that the proportion ÍSlower than 60%. Arandom sample of 75 grad at po portion is lower than 60%? Use a nificance of 05 Show our null and alternative hypotheses, your p value and state your conclusion in context of the problem. e students show that only 27 students have ever done...

  • a random sample of 80 graduate students 1 (6 points). A random sample of 80 graduate...

    a random sample of 80 graduate students 1 (6 points). A random sample of 80 graduate students shows that 22 students have shopped online in the past year. Is there enough evidence to show that the true population proportion is lower than 60%? Conduct the test at 10% level of significance. (a) H : type of test (circle one): H: two-sided / left tail / right tail (b) What is the distribution of the test statistic? (c) Sketch a graph...

  • A research center claims that at most 18% of U.S. adults’ online food purchases are for...

    A research center claims that at most 18% of U.S. adults’ online food purchases are for snacks. In a random sample of 1,800 U.S. adults, 20.1% say their online food purchases are for snacks. At alpha equals 0.10, is there enough evidence to reject the center’s claim?                                                                                                                         Identify the null hypothesis, H naught. Identify the alternative hypothesis, H sub a. Find the standardized test statistic, z.      For alpha equals 0.10 , find and describe the rejection region(s).   Make certain...

  • An education researcher claims that at most 8% of working college students are employed as teachers...

    An education researcher claims that at most 8% of working college students are employed as teachers or teaching assistants. In a random sample of 200 working college students, 10% are employed as teachers or teaching assistants. At a = 0.01, is there enough evidence to reject the researcher's claim? Complete parts (a) through (e) below. (a) Identify the claim and state Ho and Ha Identify the claim in this scenario. Select the correct choice below and fill in the answer...

  • A fitness magazine claims that the mean cost of a yoga session is not more than...

    A fitness magazine claims that the mean cost of a yoga session is not more than $13. You work for a consumer group and are asked to test this claim. You find that a random sample of 27 yoga sessions has a mean cost of $14.32 and a standard deviation of $2.40. At ?-0.025, do you have enough evidence to reject the magazine's claim? Assume the population is normally distributed. a. Ho HA b. Find the critical value (s) and...

  • A research center claims that at least 30% of adults in a certain country think that...

    A research center claims that at least 30% of adults in a certain country think that their taxes will be audited. In a random sample of 700 adults in that country in a recent year, 20% say they are concerned that their taxes will be audited. At α=0.10, is there enough evidence to reject the center's claim? Complete parts (a) through (e) below. (a) Identify the claim and state Ho and H ldentify the claim in this scenario. Select the...

  • Question 7 An online tutoring service claims that students who take their ACT preparation course have...

    Question 7 An online tutoring service claims that students who take their ACT preparation course have a mean ACT score of at least 25.8. A consumer advocate is suspicious of this claim. The advocate polls 32 students who used the service. The students in the sample had a mean ACT score of 24.9, with a standard deviation of 3.8. Test for evidence that the mean ACT score for people using this service is actually lower than 25.8. Use a level...

  • ONLY DO NUMBER 3 For this project you will test claims and conjectures using hypothesis testing. ...

    ONLY DO NUMBER 3 For this project you will test claims and conjectures using hypothesis testing. For each hypothesis test, report the following: The null hypothesis, H0 The alternative hypothesis, H1 The test statistic rounded to the nearest hundredth (use T Stats or Proportion Stats in StatCrunch to find test statistics) The P-value for the test (use T Stats or Proportion Stats in StatCrunch to find P-values) The formal decision (Reject H0 or Fail to reject H0, remember that reject...

  • ONLY DO NUMBER 7 For this project you will test claims and conjectures using hypothesis testing. ...

    ONLY DO NUMBER 7 For this project you will test claims and conjectures using hypothesis testing. For each hypothesis test, report the following: The null hypothesis, H0 The alternative hypothesis, H1 The test statistic rounded to the nearest hundredth (use T Stats or Proportion Stats in StatCrunch to find test statistics) The P-value for the test (use T Stats or Proportion Stats in StatCrunch to find P-values) The formal decision (Reject H0 or Fail to reject H0, remember that reject...

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
ADVERTISEMENT