A dietician read in a survey that 85.36% of adults in the U.S. do not eat breakfast at least 3 days a week. She believes that a larger proportion skip breakfast 3 days a week. To verify her claim, she selects a random sample of 66 adults and asks them how many days a week they skip breakfast. 41 of them report that they skip breakfast at least 3 days a week. Test her claim at . = 0.05.

Use the figure to the right, which shows the percentages of adults from several countries who favor building new nuclear power plants in their country. The survey included random samples of 1051 adults from Country A, 1120 adults from Country B, 1048 adults from Country C, and 1013 adults from Country D. At a = 0.05, can you support the claim that the proportion of adults in Country B who favor building new nuclear power plants in their country is different from the proportion of adults from Country C who favor building new nuclear power plants in their country? Assume the random samples are independent. 100- 80- 60 40 20 I Country A 53% I Country B 47% O Country C 46% O Country D 34% Identify the claim and state Ho and H. The claim is "the proportion of adults in Country B who favor building new nuclear power plants in their country is different than the proportion of adults from Country C who favor building new nuclear power plants in their country." Let p, represent the population…

The proportion of Americans who have frequent migraines is 15.2% according to the CDC. An acupuncturist claims that her treatment can reduce this figure significantly. A random sample of 260 Americans is administered the acupuncturists treatment and 31 report experiencing migraines.a. State Hypotheses to the scenario using the correct symbols. b. What is the sample proportion? (Round to 2 decimal places) ˆpp^=c. Suppose the P-value is calculated to be 0.0427What would your decision be for this test using α=α= 0.05? fail to reject the null reject the null accept the null    Write a conclusion in terms of the acupuncturist's claim. Use the model provided by the instructor. Assume no errors were made.

A grocer finds that the cantaloupes in his store have weights with mean 0.7 kg and standard deviation 53 grams. If this is true, then 99.7% of cantaloupes will have weights between how many grams?

For this problem, carry at least four digits after the decimal in your calculations. Answers may vary slightly due to rounding.The National Council of Small Businesses is interested in the proportion of small businesses that declared Chapter 11 bankruptcy last year. Since there are so many small businesses, the National Council intends to estimate the proportion from a random sample. Let p be the proportion of small businesses that declared Chapter 11 bankruptcy last year.

Suppose a new drug is intended to improve walking distance in patients with Parkinson’s Disease. A researcher measures patients’ walking distance in feet before and after trying the drug for 9 weeks. What type of statistical test

According to the U.S. Census, the average adult woman is the United States is 65 inches tall and the standard deviation is 3 inches.  If Zsike is 67 inches tall, what is her z-score?

How many Biology students’ records need to be sampled to estimate the percentage who earn "A"s to within 4.5% with 98% confidence?

In a random sample of 500 teenagers 12 to 17 years old, it was found that 330 have regular access to computers and the Internet.  Find a point estimate of the true proportion of teenagers 12 to 17 years old who have regular access to computers and the Internet.

Use the figure to the right, which shows the percentages of adults from several countries who favor building new nuclear power plants in their country. The survey included random samples of 1051 adults from Country A, 1120 adults from Country B, 1048 adults from Country C, and 1013 adults from Country D. At a =0.05, can you support the claim that the proportion of adults in Country B who favor building new nuclear power plants in their country is different from the proportion of adults from Country C who favor building new nuclear power plants in their country? Assume the random samples are independent. 100- 80- 60 40 20- 0- I Country A 53% I Country B 47% O Country C 46% O Country D 34% Identify the claim and state Ho and Ha. The claim is "the proportion of adults in Country B who favor building new nuclear power plants in their country is the same as the proportion of adults from Country C who favor building new nuclear power plants in their country." greater than less than different…