ZuoTi.Pro
Question

Choose the BEST answer In 2007 a Gallup poll estimated that 45% of US adults rated their f nancial situation as good we want to know if the proportion is smaller this year. We gather a random sample of 100 US adults this year and find that 39 rate their financial situation as good. After carrying out a hypothesis test for p 0.45 compared to p 0.45, we obtain a p-value of 0114 Is the following statement about the p-value valid or invalid? lf the percentage of adults who rate their financial situation as good is still 45% there is an 11 4% chance that a random sample of size 00 would have a sample percentage of 39% or lower O valid O invalid

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

Since the p-value is less than alpha = 0.05, we reject the null hypothesis ie p < 0.45.

Hence the given statement is valid.

0 0
Add a comment
Know the answer?
Add Answer to:
Choose the BEST answer In 2007 a Gallup poll estimated that 45% of US adults rated...
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

  • Hypothesis tests for proportions In 2007, a Gallup poll estimated that 45% of U.S. adults rated...

    Hypothesis tests for proportions In 2007, a Gallup poll estimated that 45% of U.S. adults rated their financial situation as "good." We want to know if the proportion is smaller this year. We gather a random sample of 100 U.S. adults this year and find that 39 rate their financial situation as "good. After carrying out a hypothesis test for p 0.45 compared to p 0.45, we obtain a p-value of 0.114. Determine whether each of the following statements about...

  • In 2007, a Gallup poll estimated that 45% of U.S. adults rated their financial situation as...

    In 2007, a Gallup poll estimated that 45% of U.S. adults rated their financial situation as “good.” We want to know if the proportion is smaller this year. We gather a random sample of 100 U.S. adults this year and find that 39 rate their financial situation as “good.” Does the test indicate that the proportion is smaller this year? Choose correct answer Yes No Test and CI for One Proportion Test of p 0.45 vs p < 0.45 95%...

  • Choose the BEST answer ln 2009 news organizations reported that 47% of US adults favored providing...

    Choose the BEST answer ln 2009 news organizations reported that 47% of US adults favored providing a legal way for illegal im migrants ready in the us to be one c e s n 2010 te percentage with this opinion rose to 50%. Suppose that a current poll of 100 andomly selected US adults shows this percentage is hgher than 50% this year. A researcher conducts a hypothesis test with the data from the current poll She finds that the...

  • In February 2007, the MITI Poll surveyed adults living in Canada. When asked about the current...

    In February 2007, the MITI Poll surveyed adults living in Canada. When asked about the current state of the job market, 45% indicated that nw is a good time to be looking for a quality job. The reminder answered no opinion or that now is a bad time to be looking for a quality job. The results were more positive than survey taken in 2003, but down from the boom years of the 1990s. Suppose that you select a random...

  • The Gallup Poll asked a probability sample of 2500 U.S. adults whether they used a credit...

    The Gallup Poll asked a probability sample of 2500 U.S. adults whether they used a credit card to pay for groceries that week. Suppose that 25% of the adult population did. We would like to know the probability that an SRS of size 2500 would come within plus or minus 2 percentage points of this true value. If p-hat is the proportion of the sample who did use a credit card to pay for groceries, what is the mean of...

  • The Gallup Poll asked a probability sample of 2500 U.S. adults whether they used a credit...

    The Gallup Poll asked a probability sample of 2500 U.S. adults whether they used a credit card to pay for groceries that week. Suppose that 25% of the adult population did. We would like to know the probability that an SRS of size 2500 would come within plus or minus 2 percentage points of this true value. If p-hat is the proportion of the sample who did use a credit card to pay for groceries, what is the mean of...

  • (1 point) For each problem, select the best response. (a) What is significance good for? Which of the following que...

    (1 point) For each problem, select the best response. (a) What is significance good for? Which of the following questions does a test of significance answer? A. Is the sample or experiment properly designed? B. Is the observed effect important? C. Is the observed effect due to chance? D. All of the above. (b) A Gallup Poll asked the question How would you rate the overall quality of the environment in this country today- as excellent, good, only fair, or...

  • A Gallup poll of 1,236 adults showed that 12% of the respondents believe that it is...

    A Gallup poll of 1,236 adults showed that 12% of the respondents believe that it is bad luck to walk under a ladder. Suppose 30 people are selected at random from among the 1,236 were polled, and further suppose we want to calculate the probability that at least 2 of the 30 believe it is bad luck to walk under a ladder. Given that the 30 subjects were selected without replacement, those selections are not independent. Can the probability be...

  • I mostly need help with question 2(I put Q1 on here for reference) 1. The Gallup...

    I mostly need help with question 2(I put Q1 on here for reference) 1. The Gallup organization periodically polls adults living in the U.S. about their approval or disapproval of the job the President of the U.S. is doing. At the end of President Trump’s first month in office, January 2017, his approval rating was 45%, while at the end of last month, March, 2020, his approval rating was 49%. For the purpose of this problem, suppose that the sample...

  • Uninsured Patients: It is estimated that 16.8% of all adults in the U.S. are uninsured. You...

    Uninsured Patients: It is estimated that 16.8% of all adults in the U.S. are uninsured. You take a random sample of 240 adults seen by a certain clinic and find that 47 (about 20% of them) are uninsured. (a) Assume the 16.8% value is accurate. In all random samples of 240 U.S. adults, what is the mean and standard deviation for the number of those who are uninsured? Round both answers to 1 decimal place. μ = σ = (b)...

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