Aurvey of 2285 adults in a certain large country aged 18 and older conducted by a reputable polling organization found that 425 have donated blood in the past two years. Comp parts (a) through (e) below (a) Obtain a point estimate for the population proportion of adults in the country aged 18 and older who have donated blood in the past two years. (Round to three decimal places as needed) (b) Verity that the requirements for constructing a confidence interval about p are salisfied. The sample a simple random sample, the value of is, which is 10, and the less than or equal to 5% of the ick to select your answers). Il app honorlock.com is sharing your screen. Stop sharing Hide MacBook Pro

Aurvey of 2285 adults in a certain large country aged 18 and older conducted by a reputable polling organization found that 425 have donated blood in the past two years. Comp parts (a) through (e) below (a) Obtain a point estimate for the population proportion of adults in the country aged 18 and older who have donated blood in the past two years. (Round to three decimal places as needed) (b) Verity that the requirements for constructing a confidence interval about p are salisfied. The sample a simple random sample, the value of is, which is 10, and the less than or equal to 5% of the ick to select your answers). Il app honorlock.com is sharing your screen. Stop sharing Hide MacBook Pro

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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A corporation that maintains a large fleet of company cars for the use of its sales staff is interested in the mean distance driven monthly per sales person. The following list gives the monthly distances in miles driven by a random sample of 9 sales persons. 2173 , 2386 , 1945 , 2494 , 2694 , 2084 , 2093 , 2394 , 2668 Send data to calculator Send data to Excel Based on this sample, find a 99% confidence interval for the mean number of miles driven monthly by members of the sales staff, assuming that monthly driving distances are normally distributed. Then find the lower limit and upper limit of the 99% confidence interval.
An auditor takes a random sample of 880880 invoices from the 9510 invoices relating to the activities of a company in 2019. The sample mean value of the sampled invoices was £126 and the sample standard deviation was £58. Find a 99% confidence interval for the mean value of all the invoices for 2019. Round to 3 decimal places The records of the company states that the total income from the 9510 invoices was £1150710. The auditor's sample evidence does not support this stated total. True or false? What is the probability, rounded to 3 decimal places, that the company's income does not exceed the value in the records?
A recent survey showed that 42% of US employers were likely to require higher employee contributions for health care coverage. Suppose the survey was based on a sample of 500 companies. Find the 99% confidence interval for the proportion of all companies likely to require higher employee contributions for health care coverage. (Round to four decimal places)
Let’s suppose a sample of 36 American teenagers (randomly selected from a normally distributed population) watches an average of 1450 hours of television per year with a standard deviation of 239 hours. Construct the 95% confidence interval (CI) for the mean number of hours the population of American teenagers watch television per year
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In order to estimate the percentage of adults who file their taxes at least two weeks be deadline, a 99% confidence interval is constructed. The interval ends up being from 0.756 to 0.864. Which of the following could be a 90% confidence interval for the same sample data? I. 0.749 to 0.871 II. 0.776 to 0.844 III. 0.765 to 0.875 IV. 0.799 to 0.841 OI only OIV only None of the answer options are reasonable 90% confidence intervals. III only O II only
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