In a recent year, the Better Business Bureau settled 75% of complaints they received. You have been hiredby the Bureau to investigate complaints this year involving computer stores. You plan to select a randomsample of complaints to estimate the proportion of complaints the Bureau is able to settle. Suppose yoursample size is 163. What is the probability that the sample proportion will be at most 3 percent more thanthe population proportion?(Enter your answer as a number accurate to 4 decimal places.)Submit Question

Given:Population proportion (p) = 0.75Sample size (n) = 163

Answered: In a recent year, the Better Business…

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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The mean percent of childhood asthma prevalence in 43 cities is 2.23%. A random sample of 34 of these cities is selected. What is the probability that the mean childhood asthma prevalence for the sample is greater than 2.7%? Interpret this probability. Assume that a 1.36%. The probability is (Round to four decimal places as needed.) Interpret this probability. Select the correct choice below and fill in the answer box to complete your choice. (Round to two decimal places as needed.) O A. About % of samples of 34 cities will have a mean childhood asthma prevalence greater than 2.23%. O B. About % of samples of 34 cities will have a mean childhood asthma prevalence greater than 2.7%. O C. About % of samples of 43 cities will have a mean childhood asthma prevalence greater than 2.7%.
Answer the following questions accordingly. Take your time. Thanks in advance!
John works as a weld inspector in a shipyard. Because he keeps track of good and poor welds, he knows that 5% of all welds will be poor during the afternoon shift. What are the chances that the proportion of poor welds will be more than 0.083 based on a sample of 300 welds? O a 0.0044 Ob 0.9957 Ⓒc 0.0045 Od 0.9881
A direct mail company wishes to estimate the proportion of people on a large mailing list that will purchase a product. Suppose the true proportion is 0.06. If 224 are sampled, what is the probability that the sample proportion will be less than 0.05? Round your answer to four decimal places.
The table summarizes results from 975 pedestrian deaths that were caused by automobile accidents. Driver Pedestrian Intoxicated? Intoxicated? Yes No Yes 64 82 No 261 568 If one of the pedestrian deaths is randomly selected, find the probability that the pedestrian was not intoxicated or the driver was intoxicated. Report the answer as a percent rounded to one decimal place accuracy. You need not enter the "6" symbol. prob =
Suppose that insurance companies did a survey. They randomly surveyed 400 drivers and found that 310 claimed they always buckle up. We are interested in the population proportion of drivers who claim they always buckle up. Which distribution should you use for this problem? (Round your answer to four decimal places.)
According to the financial reports by Snapchat, the average daily user of Snapchat created 19 messages, or "snaps," per day in Q3 2017. A college student wants to find out if the number of Snapchat messages has changed since Q3 2017 and creates a random sample using information from students on her campus for the current semester, with the accompanying results. Complete parts a through Click the icon to view the daily snaps data. C. a. Using a = 0.01, test the hypothesis that the number of Snapchats sent by the average Snapchat user has not changed since Q3 2017. Determine the null and alternative hypotheses. Hot = 19 19 H₁: (Type integers or decimals. Do not round.) Determine the appropriate critical value. Select the correct choice below and fill in the answer box within your choice. (Round to three decimal places as needed.) O A. O B. -ta= OC. ±¹/2 t = t Daily Snaps G 22 13 9 18 15 33 8 23 27 27 22 31 20 16 19 33 31 5 Print 15 D 21 Done - X
One year, the distribution of salaries for professional sports players had mean $1.6 million and standard deviation $0.81 million. Suppose a sample of 100 major league players was taken. Find the approximate probability that the average salary of the 100 players that year exceeded $1.7 million. Round your answer to nearest ten-thousandth.
Find the indicated probability and interpret the result. From 1975 through 2020, the mean annual gain of the Dow Jones Industrial Average was 653. A random sample of 34 years is selected from this population. What is the probability that the mean gain for the sample was between 400 and 800? Assume o = 1540. The probability is (Round to four decimal places as needed.) Interpret the result. Select the correct choice and fill in the answer box to complete your choice. (Round to two decimal places as needed.) O A. About OB. About OC. About OD. About % of samples of 46 years will have an annual mean gain between 400 and 800. % of samples of 34 years will have an annual mean gain between 653 and 800. % of samples of 34 years will have an annual mean gain between 400 and 800. % of sampl of 34 years will have an annual mean gain between 400 and 653.
In a recent year, the Better Business Bureau settled 73% of complaints they received. You have been hired by the Bureau to investigate complaints this year involving computer stores. You plan to select a random sample of complaints to estimate the proportion of complaints the Bureau is able to settle. Assume the population proportion of complaints settled for the computer stores is 0.73, as mentioned above. Suppose your sample size is 113. DO NOT USE THE EXCEL FORMULA. CALCULATE BY HAND OR WITH A CALCULATOR. 1. What is the probability that the sample proportion will be within 4 percent of the population proportion?
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