The table below shows the results of a survey about a junk food tax.     Support Oppose Unsure Male 116 370 14 Female 289 389 25   A person is selected at random from the sample.  What is the probability that the person is male and supports the tax? Your answer should be a decimal (not a percent) correct to three decimal places.

According to Reader's Digest, 50% of primary care doctors think their patients receive unnecessary medical care. Use the z-table. a. Suppose a sample of 390 primary care doctors was taken. Show the sampling distribution of the proportion of the doctors who think their patients receive unnecessary medical care. E(p)= (to 2 decimals) (to 4 decimals) b. What is the probability that the sample proportion will be within +0.03 of the population proportion? Round your answer to four decimals. c. What is the probability that the sample proportion will be within 10.05 of the population proportion? Round your answer to four decimals. d. What would be the effect of taking a larger sample on the probabilities in parts (b) and (c)? Why? The probabilities would -Select your answer - This is because the increase in the sample size makes the standard error, ,- Select your answer - ✪

Suppose we know that 48% of LMU students enjoy their math course.  We take a poll of 60 students.  What is the probability that at least 32 of them enjoy their math course?  You may assume the distribution of the sample proportion is normal.  Round to three decimal places. a .533 b. 000 c .256 d .204

Suppose a random sample of 880 athletes from the college are asked what their major is. The table below shows the results of the survey. Observed Frequencies of Majors from the Sample Outcome Observed Frequency Math/Science 234 Arts & Humanities 240 Business & Economics 132 Other 274 The distribution of majors at the college is shown in the second column of the table below.   Fill in the expected frequencies.  (Round to the nearest whole number). Frequencies of Majors at the College Outcome Expected Percent Expected Frequency Math/Science 31   Arts & Humanities 19   Business & Economics 30   Other 20

Arsenic is a compound that occurs naturally in very low concentrations. Arsenic blood concentrations in healthy individuals are Normally distributed with a mean of 3.2 mg/dl. Some areas of the United States have naturally elevated arsenic levels in the ground and water supplies. Researchers took a sample 20 water samples from a particular area and measured the arsenic levels in each of the 20 water samples. They want to determine if there is sufficient evidence to conclude that the arsenic level in that area is higher than 3.2 mg/dl. hypothesis test for one population mean (unknown population standard deviation) confidence interval estimate for one population mean (unknown population standard deviation) hypothesis test for population mean from paired differences confidence interval estimate for population mean from paired differences hypothesis test for difference in population means from two independent samples confidence interval estimate for difference in population means from two…

What is the probability of flipping a coin 85 times and getting tails 30 times or fewer? Round your answer to the nearest tenth of a percent. A. 95.9% O B. 0.4% C. 99.8% OD. 33.2%

A hypothesis is an educated guess. A hypothesis can also be presented as a claim. A claim is a personal statement that is made. Write a claim of your own about an average. Be sure to include a numerical value that can serve as a reference point. This is how statistical tests are initiated. For example, I claim that the average college textbook costs more than $50. You can begin in this way if you want..."I claim that the average..."

If the prevalence of a certain condition in the population is 0.4. What is the probability that exactly one person out of a sample of ten has the condition? Write as a proportion rounded to two places.

You are conducting a case-control study to examine the association between retail work and housing insecurity. You enroll 250 cases and 250 controls. 121 people work in retail, including 71 cases. Calculate the odds ratio to examine the association between retail work and housing security. Round to the nearest 10th (one decimal point). Your Answer:

What is the probability of flipping a coin 12 times and getting heads 4 times? Round your answer to the nearest tenth of a percent. O A. 6.3% O B. 19.3% C. 12.1% D. 5.4%