Question

A researcher claims that 45% of U.S. adults think that the IRS is not aggressive enough...

A researcher claims that 45% of U.S. adults think that the IRS is not aggressive enough in pursuing people who cheat on their taxes. You believe the true percentage is more than 45%. To test this, you take a simple random sample of 400 U.S. adults and find that 208 of them say the IRS is not aggressive enough. Test at significance α= .10. Round to the fourth

Homework Answers

Know the answer?
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
Similar Questions
A research center claims that less than 70% of U.S. adults think that drivers are safer...
A research center claims that less than 70% of U.S. adults think that drivers are safer using hands-free cell phones instead of using hand-held cell phones. In a random sample of 50 U.S. adults, 60% think that drivers are safer using hands-free cell phones instead of hand-held cell phones. Assume you wish to test is there enough evidence to reject the center’s claim with alpha = 0.10. Compute the test statistics.
A consumer group claims that the average annual consumption of high fructose corn syrup by a...
A consumer group claims that the average annual consumption of high fructose corn syrup by a person in the U.S. is 48.8 pounds. You believe it is higher. You take a simple random sample of 32 people in the U.S. and find an average of 53.3 pounds with a standard deviation of 4 pounds. Test at 10% significance. Round to the fourth Test Statistic: P-value:
26% of the general public drinks alcohol once a week. A researcher claims that adults working...
26% of the general public drinks alcohol once a week. A researcher claims that adults working in “white collar” jobs have different drinking habits than the general public. Data is collected from a random sample of 120 adults with white collar jobs of which 23 stated that they drank once a week in the last month. At α = 0.01, is there enough evidence to support the researcher’s claim? Conduct the appropriate significance test.
A medical researcher says that less than 72​% of adults in a certain country think that...
A medical researcher says that less than 72​% of adults in a certain country think that healthy children should be required to be vaccinated. In a random sample of 400 adults in that​ country, 69​% think that healthy children should be required to be vaccinated. At α=0.05​, is there enough evidence to support the​ researcher's claim? Select the correct choice below and fill in the answer box to complete your choice. ​(Type an integer or a decimal. Do not​ round.)...
A research center claims that at least 31​% of adults in a certain country think that...
A research center claims that at least 31​% 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, 27​% say they are concerned that their taxes will be audited. At alphaαequals=0.10​, is there enough evidence to reject the​ center's claim? Complete parts​ (a) through​(e) below. ​(c) Find the standardized test statistic z. ​(Round to two decimal places as​ needed.) (d) Decide whether to...
A researcher claims that more than 75% of the adults believe in global warming. Mimi conducted...
A researcher claims that more than 75% of the adults believe in global warming. Mimi conducted a survey on a random sample of 200 adults. The survey showed that 155 adults in the sample believe in global warming. Assume Mimi wants to use a 0.05 significance level to test the researcher’s claim. (a) What is the appropriate hypothesis test to use for this analysis? Please identify and explain why it is appropriate. (b) Identify the null hypothesis and the alternative...
A researcher claims that 25% of people in the U.S. population have circulation problems. In a...
A researcher claims that 25% of people in the U.S. population have circulation problems. In a random sample of 189 people, 38 had circulation problems. Test at the alpha = 0.05 significance level to see if the percent is 25% or if it is less. You should give your null and alternative hypotheses, then decide if you accept or reject the null hypotheses (find the test statistic and either the P-value or critical value(s)).
Sony claims that 55% of of the world population have their products. You think it’s different....
Sony claims that 55% of of the world population have their products. You think it’s different. You simple random sample x “159” people and y “76” say that they have products. Is there sufficient evidence at the 5% significance level (α = .05) to indicate that the percent of people with products is different than 55% show all work (or tell me what you plug into your calculator). Use specific words like you would in class. Ho: Ha: Test statistic:...
Use the below to solve 8,10,12 1. Identify n, p, and q. Verify that np 5...
Use the below to solve 8,10,12 1. Identify n, p, and q. Verify that np 5 and nq 5. 2. State the claim both verbally and mathematically. Identify the null and alternative hypotheses. (State H0 and Ha) 3. Determine what type of test you will be doing: If Ha is < then left tailed If Ha is > then right tailed If Ha is then two tailed 4. Specify the level of significance, α. This represents the area under the...
•The Internal Revenue Service (IRS) claims that its forms should typically take about 160 minutes to...
•The Internal Revenue Service (IRS) claims that its forms should typically take about 160 minutes to fill out. •A researcher believes that the IRS's claim is not correct and that it generally takes people longer to complete each of the forms. •She recorded the time (in minutes) it took 20 individuals to complete each form. •Do you agree with the IRS’ claim, or do you think that the researcher is correct? 278 71 201 101 83 133 110 119 180...