Out of 400 people sampled, 128 had kids. Based on this, construct a 99% confidence in true population proportion of people with kids. Give your answers as decimals, to three places
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- 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…In a sample of 169 students, 16 said they have donated blood. What percent of the students have donated blood?The mean of 14 numbers in a data set is 43. A new number is included in the data set. It changes the mean to 44. What is the new number? Record the result below accurate to two decimal places.
- Prof. Leen wants to estimate the more than 92% percent of adults living in a large city have cell phones. Prof. Leen randomly selects 160 adult residents to determine whether they have cell phones. Of the 160 people sampled, 155 own cell phones. Find the p-value for the test. (Round the answer to three decimal places.)A survey of 700 non fatal accidents showed that 287 involved defective equipment. Find a point estimate for p, the population proportion of accidents that involved defective equipment and round to 4 decimal places if needed.Is the average time to complete an obstacle course longer 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 43 42 45 43 42 43|| 44 44 Left 42 42 47|| 41 42 43 46 || 44 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 v Select an answer v Select an answer v (please enter a decimal) H: Select an answer v Select an answer v| Select an answer v (Please enter a decimal) b. The test statistic ? v (please…
-  A national forest service wanted to estimate the number of deer in a particular national park. They cotton tag 71 deer and release him back into the park. Later they selected a sample of 272 deer. Of the 272 dear, 17 were tagged, assuming that the portion of tag deer and the sample holds for all deer in the forest, what is the best estimate of the number of deer in the park? A pharmacist estimates that a chemotherapy drug produces a 75% improvement in lung cancer patients. If this treatment is randomly given to 7 lung cancer patients. (Approximate your answer to two decimal places) How many average patients report Improvement with chemotherapy treatment?A sample of 150 married women determined that 127 are happy in their marriage. A sample of 150 married men determined that 76% are happy in their marriage. If you plan to test if the percent of married women who are happy in their marriage is greater then the percent of married men who are happy in their marriage- Answer the following: What is the test statistic? Write to 4 decimal places.
- Out of 240 racers who started the marathon, 213 completed the race, 18 gave up, and 9 were disqualified. What percentage did not complete the marathon? %Give your answer accurate to at least 1 decimal place.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 43 45 43 46 44 40 43 Left 47 37 45 38 43 42 39 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 Select an answer vSelect an answer | (please enter a decimal) H: Select an answer v Select an answer v Select an answer v (Please enter a decimal) b. The test statistic ? |(please show your…
