1. Construct a 95% confidence interval to estimate the proportion of Wingate male students that are left- handed. From previous class surveys 17 out of 126 male students were left-handed. Interpret your confidence interval. By interpretation, I mean something like what is contained in the class notes, which is "we are X% certain that the true proportion of ...".
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- Suppose you want to estimate the proportion of employed adults who would continue working if they won $10 million in the lottery. A previous study on the issue of how to sample proportion of 0.59. How many employed adults should be randomly sampled in order to get a 99% confidence interval with a width of 0.3?Answer with detailed step by step instuctions please.Kim wants to determine a 90 percent confidence interval for the true proportion p of high school students in the area who attend their home basketball games. Out of n randomly selected students she finds that that exactly half attend their home basketball games. About how large would n have to be to get a margin of error less than 0.02 for p?
- Kim wants to determine a 95 percent confidence interval for the true proportion p of high school students in the area who attend their home basketball games. Out of n randomly selected students she finds that that exactly half attend their home basketball games. About how large would n have to be to get a margin of error less than 0.04 for p?A College Alcohol Study interviewed an SRS of 1000 college students about their drinking habits. Suppose that half of all college students "drink to get drunk" at least once in a while. That is sample proportion, p-hat 0.5. %3D 9. Estimate a 95% confidence interval for the actual percentage among all students. Round the number to nearest hundredth. O47% to 53% O 50% to 55% 43% to 52% O 44% to 56%A survey asked, "How many tattoos do you currently have on your body?" Of the 1217 males surveyed, 179 responded that they had at least one tattoo. Of the 1075 females surveyed, 137 responded that they had at least one tattoo. Construct a 90% confidence interval to judge whether the proportion of males that have at least one tattoo differs significantly from the proportion of females that have at least one tattoo. Interpret the interval. ... Let p₁ represent the proportion of males with tattoos and p2 represent the proportion of females with tattoos. Find the 90% confidence interval for p₁-P2- The lower bound is The upper bound is (Round to three decimal places as needed.) Interpret the interval. OA. There is 90% confidence that the difference of the proportions is in the interval. Conclude that there is a significant difference in the proportion of males and females that have at least one tattoo. OB. There is a 90% probability that the difference of the proportions is in the interval.…
- This data comes from the hours of sleep among nightshift and dayshift workers. How would i put into words the meaning of the confidence interval in relation to the topicThe Athletics Department at a high school is interested in the difference in the run times between 11th and 12th grade students. Suppose the 11th grade students make up the first sample while the 12th grade students make up the second.Using a confidence level of 95%, the confidence interval found was (−1.8,2.9)(-1.8,2.9).Which of the following is the correct interpretation? We are 95% confident that the run times of the 11th grade students are, on average, faster than those of the 12th grade students. We are 95% confident that the run times of the 11th grade students are, on average, slower than those of the 12th grade students. We are 95% confident that the run times of the 11th grade students are, on average, about the same as those of the 12th grade students.You are interested in constructing a 90% confidence interval for the proportion of all caterpillars that eventually become butterflies. Of the 427 randomly selected caterpillars observed, 45 lived to become butterflies. a. Use 3 decimal places to complete the following statement: With 90% confidence the proportion of all caterpillars that lived to become a butterfly is between and . b. If many groups of 427 randomly selected caterpillars were observed, then a different confidence interval would be produced from each group. About percent of these confidence intervals will contain the true population proportion of caterpillars that become butterflies and about percent will not contain the true population proportion.
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