In a newspaper's survey of 486 people, 53.7% said that we should replace passwords with biometric security, such as fingerprints. The accompanying Statdisk display results from a test ofthe claim that half of us say that we should replace passwords with biometric security. Use the normal distribution as an approximation to the binomial distribution. Use the display and a0.10 significance level to complete parts (a) through (e).Sample proportion: 0.5370370Test Statistic, z: 1.6330Critical z: + 1.6449P-value: 0.1025P-value = 0.102(Round to three decimal places as needed.)d. What is the null hypothesis, and what do you conclude about it?The null hypothesis is Ho: p V, where p denotes the population proportion of people who say that we should replace passwords with biometric security.V the nullhypothesis.(Type an integer or a decimal. Do not round.)

In a newspaper's survey of 486 people, 53.7% said that we should replace passwords with biometric…

Answered: P-value = 0.102 (Round to three decimal…

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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You are conducting a multinomial Goodness of Fit hypothesis test for the claim that all 5 categories are equally likely to be selected. Complete the table. Report all answers correct to three decimal places. Category ObservedFrequency ExpectedFrequency PearsonResidual A 18 B 24 C 19 D 21 E 13 What is the chi-square test-statistic for this data?χ2=
Excel's __________ function can be used to calculate a p-value for a hypothesis test. a. RAND b. NORM.S.DIST c. NORM.S.INV d. Not enough information is given to answer this question.
Can you help me with these please?
A popular theory is that presidential candidates have an advantage if they are taller than their main opponents. Listed are heights (in centimeters) of randomly selected presidents along with the heights of their main opponents. Complete parts (a) and (b) below. Height (cm) of President 185 170 179 191 194 179 9 Height (cm) of Main Opponent 170 184 174 166 194 182 Identify the test statistic. t= 0.57 (Round to two decimal places as needed.) Identify the P-value P-value = 0.286 (Round to three decimal places as needed.) What is the conclusion based on the hypothesis test? Since the P-value is greater than the significance level, fail to reject the null hypothesis. There is not sufficient evidence to support the claim that presidents tend to be taller than their opponents. b. Construct the confidence interval that could be used for the hypothesis test described in part (a). What feature of the confidence interval leads to the same conclusion reached in part (a)? The confidence interval…
Please solve for G, H, and I.
You are conducting a multinomial hypothesis test for the claim that all 5 categories are equally likely to be selected. Complete the table. Category ObservedFrequency ExpectedFrequency SquaredPearsonResidual A 5 B 12 C 24 D 5 E 8 What is the chi-square test-statistic for this data?χ2=χ2= Report all answers accurate to three decimal places.
7 If P(Q)=0.29, P(R)=0.67, and P(QnR)= 0.2 find P(QUR). • Write your answer as a decimal rounded to two decimal places, if necessary. Your Answer Back View Summary
Determine whether the claim stated below represents the null hypothesis or the alternative hypothesis. If a hypothesis test is performed, how should you interpret a decision that (a) rejects the null hypothesis or (b) fails to reject the null hypothesis? A scientist claims that the mean incubation period for the eggs of a species of bird is at least 34 days. Does the claim represent the null hypothesis or the alternative hypothesis? Since the claim a statement of equality, it represents the V hypothesis.
5 a. Perform a Chi-square test Goodness of Fit test on following data to see whether Republicans and Democrats are equally represented in the sample. Report the resulting chi-square number. What is your political affiliation? Republican 102 Democrat 98 200 = QUESTION 5 B Given the chi-square number for the question above, find the associated p-value and indicate the conclusion with regard to H0/H1. We accept H1. We accept H0. We do not reject H1. We do not reject H0.
State the null and alternative hypothesis. H0: ≠, >, =, or < ____________ (Type an integers or decimals. Do not round) H1: ≠, >, ≤, <, ≥, or = __________ (Type an integers or decimals. Do not round)
Test the null hypothesis of independence of the two classifications, A and B, of the 3 × 3 7. contingency table shown below. Test using a = 0.05. Write the null and alternate hypothesis. Round your expected frequencies to nearest whole number. I won't accept any solution without proper rounding. B1 19 B2 B3 60 A1 A A2 A3 40 55 23 22 31 42 47 B.
State whether the standardized test statistic t indicates that you should reject the null hypothesis. Explain. (a) t= 1.584 (b) t=0 (c) t= - 1.526 (d) t= - 1.604 to = - 1.558 (a) For t= 1.584, should you reject or fail to reject the null hypothesis? O A. Fail to reject Ho, because t> - 1.558. O B. Reject Ho, because t> - 1.558. O C. Reject Ho, because t - 1.558. O B. Fail to reject Ho, because t - 1.558. (c) For t= - 1.526, should you reject or fail to reject the null hypothesis? O A. Reject Ho, because t - 1.558. O C. Fail to reject Ho, because t> - 1.558. O D. Fail to reject Hn, because t< - 1.558.

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