Due Thu 12/12/2019 11:59 pm You want to obtain a sample to estimate a population proportion. At this point in time, you have no reasonable preliminary estimation for the population proportion. You would like to be 99% confident that you estimate is within 4% of the true population proportion. How large of a sample size is required? Hìnt: Video +]

Due Thu 12/12/2019 11:59 pm You want to obtain a sample to estimate a population proportion. At this point in time, you have no reasonable preliminary estimation for the population proportion. You would like to be 99% confident that you estimate is within 4% of the true population proportion. How large of a sample size is required? Hìnt: Video +]

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

Calculate np0(1-p0) If this value is >= 10 then when conducting a hypothesis test in Minitab use the Normal approximation method. If it is < 10, use the Exact Method. What is the number of students (number of trials) n= _24__; the number of students who have an iPhone (number of events) x= __21__?
After calculating the sample size needed to estimate a population proportion to within 0.05, you have been told that the maximum allowable error (E) must be reduced to just 0.025. If the original calculation led to a sample size of 1000, the sample size will now have to be___. Place your answer, as a whole number in the blank. For example, 2345 would be a legitimate entry.
Prof. Leen wants to estimate the more than 92% percent of adults living in a large city have cell phones. Prof. Leen randomly selects 160 adult residents to determine whether they have cell phones. Of the 160 people sampled, 155 own cell phones. Find the p-value for the test. (Round the answer to three decimal places.)
The highway department wants to estimate the proportion of vehicles on Interstate 25 between the hours of midnight and 5:00 A.M. that are 18-wheel tractor trailers. The estimate will be used to determine highway repair and construction considerations and in highway patrol planning. Suppose researchers for the highway department counted vehicles at different locations on the interstate for several nights during this time period. Of the 3,263 vehicles counted, 1,009 were 18-wheelers.a. Determine the point estimate for the proportion of vehicles traveling Interstate 25 during this time period that are 18-wheelers.b. Construct a 99% confidence interval for the proportion of vehicles on Interstate 25 during this time period that are 18-wheelers.
A sample of 200 whatzits is chosen at random from the day's production and it is found that 180 meet specifications. a. Estimate the proportion of the day's production that meets specifications and give the uncertainty of the estimate. b. What sample size is necessary to arrive an estimate with uncertainty of less than 0.001?
A medical researcher says that less than 80% of adults in a certain country think that healthy children should be required to be vaccinated. In a random sample of 200 adults in that country, 76% think that healthy children should be required to be vaccinated. At α=0.05, is there enough evidence to support the researcher's claim? Complete parts (a) through (e) below. Let p be the population proportion of successes, where a success is an adult in the country who thinks that healthy children should be required to be vaccinated. (a) Find the critical value(s) and identify the rejection region(s). z0=______ (b) Identify the rejection region(s). (c) Find the standardized test statistic z. z=______ (d) Decide whether to reject or fail to reject the null hypothesis and (e) interpret the decision in the context of the original claim.
An outdoor hot dog vendor sells an average of 50 hot dogs per day in dry weather and a average of 15 per day in wet weather. If the weather in this area is wet 20% of the time, determine the the expected (average) number of hot dogs sold per day.
1. Per the CDC article, men have higher blood pressure than women. Is this also true for this wholesale distribution center population? Use 0.05. Determine whether your (NEW) sample provides statistical evidence that this company’s population of adults has men with a higher blood pressure than women. Set alpha at 0.05 just focus on the Systolic number.
A study conducted at Virginia Commonwealth University in Richmond indicates that many older individuals can shed insomnia through psychological training. A total of 5252 insomnia sufferers averaging age 6767 years old completed eight weekly sessions of cognitive-behavior therapy. After the therapy, 2121 participants enjoyed a substantially better night’s sleep. Calculate the sample proportion of insomnia sufferers who did not enjoy a better night’s sleep after the therapy. Round your answer to three decimal places, if necessary.
You want to obtain a sample to estimate the percentage of college students who plan to vote in an upcoming election. At this point in time, you have no reasonable estimate for the population proportion. You would like to be 98% confident that you estimate is within 5% of the true population proportion. How large of a sample size is required?Do not round mid-calculation. However, use a critical value accurate to three decimal places. n=
How large a sample is required to be 90% confident that our estimate of population mean is not off by more than 0.03 if σ= 0.2?
You want to obtain a sample to estimate a population proportion. At this point in time, you have no reasonable estimate for the population proportion. You would like to be 98% confident that you esimate is within 5% of the true population proportion. How large of a sample size is required? Do not round mid-calculation. However, use a critical value accurate to three decimal places.