40. A survey was conducted to determine the percentage of high school students who planned to go to college. The results were stated as 82% with a margin of error of ± 5%. What is meant by ± 5%? a. Five percent of the population was not surveyed. b. In the sample, the percentage of students who plan to go to college was between 77% and 87%. c. The percentage of the entire population of students who plan to go to college is between 77%and 87%. d. It is unlikely that the given sample proportion result would be obtained unless the true percentage was between 77% and 87% e. Between 77% and 87% of the population were surveyed.

40. A survey was conducted to determine the percentage of high school students who planned to go to college. The results were stated as 82% with a margin of error of ± 5%. What is meant by ± 5%? a. Five percent of the population was not surveyed. b. In the sample, the percentage of students who plan to go to college was between 77% and 87%. c. The percentage of the entire population of students who plan to go to college is between 77%and 87%. d. It is unlikely that the given sample proportion result would be obtained unless the true percentage was between 77% and 87% e. Between 77% and 87% of the population were surveyed.

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

The highway department wants to estimate the proportion of vehicles on a Highway at KM 25 between midnight and 5:00 A.M. The head of the department wants to see how many 18-wheel tractor trailers pass on the road. These estimates will be used to determine highway repairs and construction considerations and in highway patrol planning. The department chief asked investigators to calculate estimates of vehicles at different locations on inter-island roads over the past 7 days. From 3,481 vehicles counted there are 927 are 18-wheel drive. However, out of the total 927, there were 51 vehicles that had accidents so that the sample was calculated based on the results of a reduction in the number of accidents. Specify an approximate point for the proportion of vehicles performingtravel on KM 25 during this time period which is an 18-wheeled vehicle!(Assume the confidence level is 99%). What are the benefits of estimating value estimates in this case (analysis of the answers you have obtained)?
A mining company finds that daily lost-work injuries average 1.2. If the local union contract has a clause requiring that the mine be shut down as soon as three workers incur lost-work injuries, on what percentage of the days will the mine be operational throughout the day?
A sobriety test is 96% accurate. Suppose 2500 drivers were pulled over on suspicion ofintoxication, and suppose 12% of people pulled over were actually intoxicated (and the restwere sober). 1. What percentage of sober drivers failed the sobriety test? 2. What percentage of drivers who failed the sobriety test were sober? 3. What percentage of drivers who passed the sobriety test were intoxicated?
According to a survey, 12.3% of men over the age of 30 in Jonesville work two or more jobs. The survey had a margin of error of ±1.9%. Of the estimated 35,000 men over the age of 30 in Jonesville, how many would you expect to work two or more jobs? between and
In a survey of 1,700 people who onwed a certain type of car 595 said that they would buy that type of car again. what percent of the people surveyed were satisfied with the car?
A recent survey in the United States reported the prevalence of a sexually transmitted disease called chlamydia among 14 to 39 is 1.7% (95% CI = 1.4% – 2.0%). What is the margin of error associated with this survey’s estimate of the prevalence of chlamydia? Suppose the prevalence of chlamydia among 14 to 39 in Great Britain is 1%. Do you think that the United States and Great Britain have the same true population prevalence of chlamydia among 14-39 year olds, why?
How many computers must be surveyed in order to be 99%confident that his estimate is in error by no more than two percentage points?
a) If 30 % of the hack times are greater than A microseconds, what is A to one decimal place? b) What percent of the times are predicted to be between 18 and 20 microseconds? Report the percentage to two decimal places. c) What percent of the times are predicted to be between 18 and 20 microseconds? Report the percentage to two decimal places. d) If 60 % of the hack times are predicted to be between 17 and B microseconds, what is B to one decimal place? Note: Avoid rounding until the very end. Store intermediary numbers as a variable to use in your calculator. e) What is the probability that the hack times are typical? Round your answer to two decimal places.
An environmentalist wants to find out the fraction of oil tankers that have spills each month. Step 1 of 2: Suppose a sample of 261 tankers is drawn. Of these ships, 46 had spills. Using the data, estimate the proportion of oil tankers that had spills. Enter your answer as a fraction or a decimal number rounded to three decimal places. Step 2 of 2: Suppose a sample of 261 tankers is drawn. Of these ships, 46 had spills. Using the data, construct the 90% confidence interval for the population proportion of oil tankers that have spills each month. Round your answers to three decimal places.
A researcher wishes to estimate the proportion of adult males who are less than 5 feet 5 inches tall. She wants to be 90% confident that her estimate is within 4% of the true proportion (Round to the nearest whole number): (a) How large a sample should be taken if in a sample of 300 males, 30 were less than 5 feet 5 inches tall?(b) If no estimate of the sample proportion is available, how large should the sample be?
It is bleieved that the percent of convicted felons who have a history of juvenile deliquency is 70%. Is there evidence to support the claim that the actual percentage is more than 70% if out of 200 convicted felons, we find that 154 have a history of juvenile deliquency? Set the level of significance at a = 0.05
Because of practical considerations you ultimately decide to survey 100 people and find that 75 of them would prefer to work at home to some extent. When your boss asks you “What percentage of employees at this company want to work from home?”, what percentage do you tell him?