In a certain survey, 524 people chose to respond to this question: "Should passwords be replaced with biometric security (fingerprints, etc)?" Among the respondents, 54% said "yes." We want to test the claim that more than half of the population believes that passwords should be replaced with biometric security. Completeparts (a) through (d) below,a. Are any of the three requirements violated? Can a test about a population proportion using the normal approximation method be used?O A. The conditions np 25 and nq 25 are not satisfied, so a test about a population proportion using the normal approximation method cannot be used.B. One of the conditions for a binomial distribution are not satisfied, so a test about a population proportion using the normal approximating method cannot be used.O C. All of the conditions for testing a claim about a population proportion using the normal approximation method are satisfied, so the method can be used.O D. The sample observations are not a random sample, so a test about a population proportion using the normal approximating method cannot be used.

Answered: pertain survey, 524 people chose to…

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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If n=410 and p (p-hat) =0.55, find the margin of error at a 90% confidence level Give your answer to three decimals
How do I construct a confidence interval of the requested level with the given data below: x=28, n=64, confidence level 93%
A sample size must be determined for estimating a population mean given that the confidence level is 99% and the desired margin of error is 0.24. The largest value in the population18 is thought to be and the smallest value is thought to be 6 .
A physical therapist wants to determine the difference in the proportion of men and women who participate in regular sustained physical activity. What sample size should be obtained if she wishes the estimate to be within five percentage points with 95% confidence, assuming that (a) she uses the estimates of 22.9% male and 19.5% female from a previous year? (b) she does not use any prior estimates?
When it comes to estimating population parameters from sample statistics, how does the degree of freedom relate to the reliability (or uncertainty) of our calculation? For instance, what would happen to our estimate in relation to the true parameter if we used too many or too few degrees of freedom?
Studies indicate that about 10 percent of polar bears weigh more than 1,000 pounds. A biologist studying the bearsthinks that percent might be too high. From a random sample of polar bears, the biologist found only 8 percent ofthe sample weighing over 1,000 pounds. Which of the following is the most appropriate method for the biologist’sstudy?(A) A one-sample -test for a sample proportion(B) A one-sample -test for a population proportion(C) A one-sample -test for a difference in population proportions(D) A two-sample -test for a difference in sample proportions(E) A two-sample -test for a difference in population proportions
Chose the most appropriate procedure to test the claim. This is all one question. Test the claim that a higher percent of African-American drivers are searched by the police than Caucasian drivers. [ Choose ] 2-Independent Population Mean Matched Pairs 2-Independent Population Proportion ANOVA 1-Population Mean against a hypothesized value Goodness-of-Fit Test 1-Population Proportion against a hypothesized value Test of Association Test the claim that marital status (Divorced, Married/Never Divorced) is related to religious affiliation (A, B, C, D). [ Choose ] 2-Independent Population Mean Matched Pairs 2-Independent Population Proportion ANOVA 1-Population Mean against a hypothesized value Goodness-of-Fit Test 1-Population Proportion against a hypothesized value…
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A study is to be made to estimate the proportion of residents of a certain city and its suburbs who favor the construction of a nuclear power plant near the city. How large a sample is needed if one wishes to be at least 90% confident that the estimate is within 0.03 of the true proportion of residents who favor the construction of the nuclear power plant?
The first blank for both questions is: "estimate of the standard ('distance' or 'score' or 'mean')" Second blanks: "...between a ('sample mean' or 'sample mean difference' or 'score')" Third Blanks: "...and the ('population mean difference' or 'population mean' or sample mean')" The choices are the same for the corresponding blanks, first, second and third.
I want to estimate the population mean number of times that adults eat breakfast in a week. I spoke with 12 coworkers, and the numbers were 7, 5, 5, 7, 2, 3, 7, 5, 1, 0, 7, 6. Calculate a 95% confidence interval for the population mean (round 3 decimal places).

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