Greg wants to estimate the percentage of people who lease a car. He surveys 340 individuals and finds that 90 lease a car.Find the confidence interval for the population proportion with a 95% confidence level.20.10 20.05 20.025 20.01 20.0051.282 1.645 1.960 2.326 2.576Use the table of common z-scores above.• Round the final answer to three decimal places.Provide your answer below:

To find the confidence interval for the population proportion with a 95% confidence level, we need…

Answered: Greg wants to estimate the percentage…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Janet wants to estimate the percentage of people who have been required to take a drug test for work. She surveys 250 individuals and finds that 175 have taken a drug test for work. Identify the values needed to calculate a confidence interval at the 98% confidence level. Then use Excel to find the confidence interval. Round the final answer to three decimal places. Provide your answer below:
In a survey of 2074 adults in a recent year, 744 made a New Year's resolution to eat healthier. Construct 90% and 95% confidence intervals for the population proportion. Interpret the results and compare the widths of the confidence The 90% confidence interval for the population proportion p is D. (Round to three decimal places as needed.)
Tina catches a 14-pound bass. She does not know the population mean or standard deviation. So she takes a sample of five friends and they say the last bass they caught was 9, 12, 13, 10, and 10 pounds. Find the t and calculate a 95% (α = .05) confidence interval.
A random sample of 12 cats was collected to study the lifespan with the data listed below. Find the 87% confidence interval for the population mean. Round all values to two decimals. 13, 15, 18, 16, 8, 12, 13, 15, 8, 13, 12, 11. Provide your answer below.
I think the answer to this last part is C
We wish to estimate what percent of adult residents in a certain county are parents. Out of 400 adult residents sampled, 356 had kids. Based on this, construct a 95% confidence interval for the proportion, p, of adult residents who are parents in this county.Give your answers as decimals, to three places. ______ < p < _______
Explain also how you use Z table ..
For the same sample statistics, which level of confidence would produce the widest confidence interval? Explain your reasoning. Choose the correct answer below. 99%, because as the level of confidence increases, ze decreases. 99%, because as the level of confidence increases, Z increases. O 90%, because as the level of confidence decreases, ze increases. 90%, because as the level of confidence decreases, Zc decreases.
need help!
Use the information below to answer Questions #19 and #20. In a survey of 2327 adults, 726 say they believe in UFOS. Construct a 90% confidence interval for the population proportion of adults who believe in UFOS. Find the left end point for a 90% confidence interval. Round to three decimal places as needed.
You are interested in finding a 90% confidence interval for the average number of days of class that college students miss each year. The data below show the number of missed days for 13 randomly selected college students. Round answers to 3 decimal places where possible. 7 8 8 0 2 11 6 10 2 0 1 3 1 With 90% confidence the population mean number of days of class that college students miss is between and days.
Researchers studied the mean egg length (in millimeters) for a bird population. After taking a random sample of eggs, they obtained a 95% confidence interval of (45,60). What is the value of the margin of error? Choose the correct answer below. A. 15 mm B. 52.5 mm O c. 7.5 mm O D. 1.96

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