In a survey of 3172 adults aged 57 through 85 years, it was found that 88.3% of them used at least one prescription medication. Complete parts (a) through (c) below.Ca. How many of the 3172 subjects used at least one prescription medication?(Round the nearest integer as needed.)b. Construct a 90% confidence interval estimate of the percentage of adults aged 57 through 85 years who use at least one prescription medication.%

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Answered: In a survey of 3172 adults aged 57…

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

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n a survey of 3422 adults aged 57 through 85 years, it was found that 82.7% of them used at least one prescription medication. Complete parts (a) through (c) below. a. How many of the 3422 subjects used at least one prescription medication? nothing (Round to the nearest integer as needed.) b. Construct a 90% confidence interval estimate of the percentage of adults aged 57 through 85 years who use at least one prescription medication. nothing%less thanpless than nothing% (Round to one decimal place as needed.)
In a survey of 3213 adults aged 57 through 85 years, it was found that 83.9% of them used at least one prescription medication. Complete parts (a) through (c) below. a. how many of the 3213 subjects used at least one prescription medication? b. construct a 90% confidence interval estimate of the percentage of adults aged 57 through 85 years who use at least one prescription medication. c. what do the results tell us about the proportion of college students who use at least one prescription medication?
In a survey of 3341 adults aged 57 through 85 years, it was found that 88.1% of them used at least one prescription medication. Complete parts (a) through (c) below. a)a. How many of the 3341 subjects used at least one prescription medication? nothing (Round to the nearest integer as needed.) b) Construct a 90% confidence interval estimate of the percentage of adults aged 57 through 85 years who use at least one prescription medication. (Round to the nearest integer as needed.) c)What do the results tell us about the proportion of college students who use at least one prescription medication?
Construct a 95% confidence interval for p1 - p2 for a survey that finds 30% of 240 males and 41% of 200 females are opposed to the death penalty. Group of answer choices a.(-0.200, -0.021) b.(-1.532, 1.342) c.(-1.324, 1.512) d.(-0.561, 0.651)
A survey asked, "How many tattoos do you currently have on your body?" Of the 1233 males surveyed, 183 responded that they had at least one tattoo. Of the 1042 females surveyed, 139 responded that they had at least one tattoo. Construct a 95% 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. C Let p₁ represent the proportion of males with tattoos and p2 represent the proportion of females with tattoos. Find the 95% confidence interval for p₁ -P2- The lower bound is The upper bound is (Round to three decimal places as needed.)
24. Job Interviews In a Harris poll of 514 human resource professionals, 90% said that the appearance of a job applicant is most important for a good first impression. a. Among the 514 human resource professionals who were surveyed, how many of them said that the appearance of a job applicant is most important for a good first impression? b. Construct a 99% confidence interval estimate of the proportion of all human resource professionals believing that the appearance of a job applicant is most important for a good first impression. c. Repeat part (b) using a confidence level of 80%. d. Compare the confidence intervals from parts (b) and (c) and identify the interval that is wider. Why is it wider?
Answer Part B
In a survey of3313 adults aged 57 through 85 years, it was found that 88.6% of them used at least one prescription medication. a. How many of the 3313 subjects used at least one prescription medication? (Round to the nearest integer as needed.) b. Construct a 90% confidence interval estimate of the percentage of adults aged 57 through 85 years who use at least one prescription medication. (Round to one decimal place as needed.)
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In a poll of 515 human resource professionals, 45.8% said that body piercings and tattoos were big personal grooming red flags. Complete parts (a) through (d) below. a. Among the 515 human resource professionals who were surveyed, how many of them said that body piercings and tattoos were big personal grooming red flags? 236 (Round to the nearest integer as needed.) b. Construct a 99% confidence interval estimate of the proportion of all human resource professionals believing that body piercings and tattoos are big personal grooming red flags. Π (Round to three decimal places as needed.)
Twenty-two car salespeople were sampled to see how many cars they sold in a month; the following data was obtained: 26, 20, 22, 18, 21, 14, 24, 28, 17, 23, 28, 29, 18, 17, 24, 26, 19, 27, 26, 22, 23, 25 Construct a 95% confidence interval for the mean number of cars sold per month by the population of car salespeople. S = t = Margine of Error: E = We are 95% confident that, on average, car salespeople sell between cars and cars per month.
The following is the number of hours of sleep obtained by eight college freshmen. Use the data to find a 92% confidence interval for the true mean number of hours of sleep by college freshmen. 7.5 8.0 6.5 24 8.5 6.5 7.0 7.5

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