Suppose that the results of a survey show that 28% of people consider summer as their favorite season. How many people should be surveyed in order to have a margin of error of 6%? Round up to the nearest whole number, if necessary. In order to have a margin of error of 6%,how many people should be surveyed.

d. Give a 95% interval estimate of the number of fatal accidents per 1000 licenses in a city where 15% of the licensed drivers are under 21.

A researcher wishes to be 95% confident that her estimate of the true proportion of individuals who travel overseas is within 2.33% of the true proportion. If no estimate of the sample proportion is available, how large should the sample be? Round-up your final answer to the next whole number.

Is the average time to complete an obstacle course different when a patch is placed over the right eye than when a patch is placed over the left eye? Thirteen randomly selected volunteers first completed an obstacle course with a patch over one eye and then completed an equally difficult obstacle course with a patch over the other eye. The completion times are shown below. "Left" means the patch was placed over the left eye and "Right" means the patch was placed over the right eye. Time to Complete the Course Right 48 48 50 50 44 43 49 45 Left 49 50 53 51 46 48 48 | 45 Assume a Normal distribution. What can be concluded at the the a = 0.01 level of significance level of significance? For this study, we should use Select an answer a. The null and alternative hypotheses would be: Ho: Select an answer Select an answer Select an answer v (please enter a decimal) H: Select answer an Select an answer Select an answer v (Please enter a decimal) b. The test statistic ? v = (please show your…

Suppose that I want to estimate the percentage of students who  love statistics in California. How many students would I need to survey in order to have a margin of error that is less than 3%, assuming that I want to be 90% confident in the final results.

Is the average time to complete an obstacle course different when a patch is placed over the right eye than when a patch is placed over the left eye? Thirteen randomly selected volunteers first completed an obstacle course with a patch over one eye and then completed an equally difficult obstacle course with a patch over the other eye. The completion times are shown below. "Left" means the patch was placed over the left eye and "Right" means the patch was placed over the right eye. Time to Complete the Course Right 45 41 46 50 41 43 48 40 Left 46 40 47 53 42 48 48 40 Assume a Normal distribution. What can be concluded at the the a = 0.01 level of significance level of significance? For this study, we should use Select an answer a. The null and alternative hypotheses would be: Ho: Select an answer ✓ H₁: Select an answer ✓ Select an answer ✓ Select an answer ✓ b. The test statistic ? ✓ = (please enter a decimal) Select an answer (Please enter a decimal) Select an answer (please show your…

The FBI wants to determine the effectiveness of their 10 Most Wanted list. To do so, they need to find out the fraction of people who appear on the list that are actually caught. Step 1 of 2 :   Suppose a sample of 716 suspected criminals is drawn. Of these people, 279 were captured. Using the data, estimate the proportion of people who were caught after being on the 10 Most Wanted list. Enter your answer as a fraction or a decimal number rounded to three decimal places.

Is the average time to complete an obstacle course different when a patch is placed over the right eye than when a patch is placed over the left eye? Thirteen randomly selected volunteers first completed an obstacle course with a patch over one eye and then completed an equally difficult obstacle course with a patch over the other eye. The completion times are shown below. "Left" means the patch was placed over the left eye and "Right" means the patch was placed over the right eye. Time to Complete the Course Right 48 44 47 40 46 41 46 48 Left 45 42 45 36 45 35 44 45 Assume a Normal distribution.  What can be concluded at the the αα = 0.10 level of significance level of significance? For this study, we should use        The null and alternative hypotheses would be:        `0:`                        `a:`                    2. The test statistic     =  (please show your answer to 4 decimal places.) 3. The p-value =  (Please show your answer to 4 decimal places.)

a researcher wants to find the proportion.  what size sample should be obtained in order to be 90% confident that the sample proportion will not differ from the true proportion by more than 3%.  Round to nearest whole number

Is the average time to complete an obstacle course different when a patch is placed over the right eye than when a patch is placed over the left eye? Thirteen randomly selected volunteers first completed an obstacle course with a patch over one eye and then completed an equally difficult obstacle course with a patch over the other eye. The completion times are shown below. "Left" means the patch was placed over the left eye and "Right" means the patch was placed over the right eye. Time to Complete the Course Right 40 40 41 43 49 48 45 48 Left 37 36 41 43 48 46 46 43 Assume a Normal distribution. What can be concluded at the the a = 0.05 level of significance level of significance? For this study, we should use Select an answer a. The null and alternative hypotheses would be: Họ: pd vV (please enter a decimal) Select an answer v H1: ud vv (Please enter a decimal) Select an answer v b. The test statistic t v- (please show your answer to 3 decimal places.) c. The p-value = (Please show…