Use the given degree of confidence and sample data to construct a confidence interval for the population proportion p. Round to three decimal places. When 333 college students are randomly selected and surveyed, it is found that 102 own a car, Find a 99% confidence interval for the true proportion of all college students who own a car. O A. 0.241

Use the given degree of confidence and sample data to construct a confidence interval for the population proportion p. Round to three decimal places. When 333 college students are randomly selected and surveyed, it is found that 102 own a car, Find a 99% confidence interval for the true proportion of all college students who own a car. O A. 0.241

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

Construct a 95% confidence interval for the mean number of friends for all users of the website. Compare your result with the interval found in Example #3 (given in the photo). a. Find x̅ and E.b. Find the left and right endpoints of the confidence interval.c. Interpret the results and compare them with Example #3.
Your analysis of the raw data indicates that 16 of the 30 students reported driving no more than 20 miles per day. Calculate a 98% confidence interval for the sample proportion. What Z Score was used?
A random survey of 200 pregnant women in New York City conducted by Epstein andRogers indicated that 150 of them preferred a female obstetrician to a male obstetrician.a. Find a point estimate for p, the proportion of all pregnant women in New York Citywho prefer a female obstetrician.__________ b. Find a 99% confidence interval for the proportion p of all pregnant women living inNew York City who prefer a female obstetrician.
Assume that a sample is used to estimate a population proportion p. Find the 95% confidence interval for a sample of size 210 with 88% successes. Enter your answer as an open-interval (i.e., parentheses) using decimals (not percents) accurate to three decimal places.C.I. =
You are interested in finding a 99% confidence interval for the average commute that non-residential students have to their college. The data below show the number of commute miles for 12 randomly selected non-residential college students. Round answers to 3 decimal places where possible. 18 20 20 24 5 28 10 13 5 24 11 11 b. With 99% confidence the population mean commute for non-residential college students is between ? and ? miles. c. If many groups of 12 randomly selected non-residential college students are surveyed, then a different confidence interval would be produced from each group. About ? percent of these confidence intervals will contain the true population mean number of commute miles and about ? percent will not contain the true population mean number of commute miles.
Find the sample size needed to estimate the percentage of adults who can wiggle their ears. Use a margin of error of 3 percentage points and use a confidence level of 95%. Complete parts (a) and (b) below. a. Assume that p and q are unknown. n= (Round up to the nearest integer.) b. Assume that 25% of adults can wiggle their ears. n= (Round up to the nearest integer.) C
Find the sample size needed to estimate the percentage of adults who can wiggle their ears. Use a margin of error of 3 percentage points and use a confidence level of 90%. Complete parts (a) and (b) below. a. Assume that p and q are unknown. n= (Round up to the nearest integer.)
Use the given confidence interval to find the margin of error and the sample proportion. (0.729,0.755) E=enter your response here (Type an integer or a decimal.)
Construct the confidence interval for the population mean u .c=.98, x=6.4, o=0.7, n = 40
Assume that a sample is used to estimate a population proportion p. Find the 80% confidence interval for a sample of size 392 with 102 successes. Enter your answer as an open-interval (i.e., parentheses) using decimals (not percents) accurate to three decimal places. 80% C.I. =
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.)
In a random sample of 1193 American adults aged 25 or older, it was found that 38.9% of them had a college degree. Construct a 98% confidence interval for the true proportion of all Americans aged 25 or older who have a college degree. Give your answers as decimals, rounded to 3 places after the decimal point (if necessary). 98% confidence interval for p: