Answered step by step
Verified Expert Solution
Link Copied!

Question

1 Approved Answer

In a certain survey, 513 people chose to respond to this question: Should passwords be replaced with biometric security (ngerprints, etc)? Among the respondents, 52%

image text in transcribedimage text in transcribedimage text in transcribedimage text in transcribedimage text in transcribed
In a certain survey, 513 people chose to respond to this question: "Should passwords be replaced with biometric security (ngerprints, etc)?" Among the respondents, 52% said "yes." We want to test the claim that more than half of the population believes that passwords should be replaced with biometric security. Complete parts (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? 0 A. All of the conditions for testing a claim about a population proportion using the normal approximation method are satised, so the method can be used. 0 B. One of the conditions for a binomial distribution are not satised, so a test about a population proportion using the normal approximating method cannot be used. 0 C. The conditions npa 5 and nq a 5 are not satised, so a test about a population proportion using the normal approximation method cannot be used. 0 D. The sample observations are not a random sample, so a test about a population proportion using the normal approximating method cannot be used. Suppose 223 subjects are treated with a drug that is used to treat pain and 50 of them developed nausea. Use a 0.10 signicance level to test the claim that more than 20% of users develop nausea. Identify the null and alternative hypotheses for this test. Choose the correct answer below. 0 A. H0: p = 0.20 H1 : p > 0.20 OB. H0:p=0.20 H1:p0.20 H1:p=0.20 In a study of 792 randomly selected medical malpractice lawsuits, it was found that 477 of them were dropped or dismissed. Use a 0.01 significance level to test the claim that most medical malpractice lawsuits are dropped or dismissed. . . . Which of the following is the hypothesis test to be conducted? O A. Ho: p = 0.5 O B. Ho: p > 0.5 H1 : p > 0.5 H1 : p = 0.5 O C. Ho: p= 0.5 O D. Ho: p = 0.5 H1 : p # 0.5 H1 : p 0.20 E. H]: p = 0.80 H1: p0.80 The test statistic is z = . (Round to two decimal places as needed.) at" D. H0: p=0.80 H1: p>0.80 H0: p=0.80 H1: p 0.5 H1 : p = 0.5 O B. Ho: p = 0.5 H1 : p > 0.5 O C. Ho: p = 0.5 H, : p

Step by Step Solution

There are 3 Steps involved in it

Step: 1

blur-text-image

Get Instant Access to Expert-Tailored Solutions

See step-by-step solutions with expert insights and AI powered tools for academic success

Step: 2

blur-text-image

Step: 3

blur-text-image

Ace Your Homework with AI

Get the answers you need in no time with our AI-driven, step-by-step assistance

Get Started

Recommended Textbook for

Probability And Statistical Inference

Authors: Robert V. Hogg, Elliot Tanis, Dale Zimmerman

10th Edition

013518939X, 978-0135189399

More Books

Students also viewed these Mathematics questions