A researcher wanted to examine the hypothesis that the proportion of obese individuals among those without diabetes exceeds 35%. To investigate this, she gathered a random sample of 1000 diabetes-free individuals and determined that 360 of them are obese. i. State the hypothesis statements. ii. Perform the hypothesis test. What can she conclude at a significance level of a = 0.05?

The percent of the population that is left-handed has historically been 10%. In a random sample of n=500 people there are 58 that are left-handed. The researcher would like to test the hypothesis that the percent of the population that is left-handed has increased. Determine the value of the test statistic

What proportion of students have a meal plan on campus? A local university claimed that 70% of students had a campus meal plan. A random sample of 30 students found that 24 of them had a meal plan on campus. Use this sample to test the claim. Use a level of significance of 0.1.

It has been claimed that at a university at least 40% of the students live on campus. In a random sample of 250 students, 90 were found to live on campus. What is the test value for testing the claim at a=.02? O A. - 2.33 B. 1.32 O C. -1.32 O D. - 1.29

Suppose you take a sample of 25 Reese's pieces. The proportion of orange is 0.4. What is the p-value when testing the hypothesis that the actual proportion of orange for all Reese's pieces is 0.5? Round to two places.

how do i solve for parts b, d, and e?

A researcher gathered a sample of participants who volunteered for a studying of phobias. She measured anxiety level of participants as they viewed photos of spiders and again when they viewed puppies. Which statistical test is appropriate for this study and why?

Is the proportion of wildfires caused by humans in the south different from the proportion of wildfires caused by humans in the west? 350 of the 519 randomly selected wildfires looked at in the south were caused by humans while 383 of the 500 randomly selected wildfires looked at the west were caused by humans. What can be concluded at the a = 0.01 level of significance? Rectangular Snip a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Ho: Select an answer | (please enter a decimal) Select an answer v Select an answer H1: Select an answer v Select an answer vSelect an answer v (Please enter a decimal) c. The test statistic ? v = (please show your answer to 3 decimal places.)

A chemist measures the haptoglobin concentrations (in grams per liter) in the blood of eight healthy adults.  Following are the values: 1.82   3.32   1.07   1.27   0.49   3.79   0.15   1.98  At the 2% significance level, test the claim that the mean haptoglobin concentration in adults is less than two grams per liter.    What type of error could you have made in your decision?

Is the proportion of wildfires caused by humans in the south higher than the proportion of wildfires caused by humans in the west? 367 of the 526 randomly selected wildfires looked at in the south were caused by humans while 390 of the 594 randomly selected wildfires looked at the west were caused by humans. What can be concluded at the a = 0.01 level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Ho: Select an answer > Select an answer > Select an answer O (please enter a decimal) H j: Select an answer Select an answer > Select an answer O (Please enter a decimal) c. The test statistic (please show = your answer to 3 decimal places.) d. The p-value (Please show your answer to %3D 4 decimal places.)