←。WSF2View an exampleдвndTrials in an experiment with a polygraph include 96 results that include 23 cases of wrong results and 73 cases of correct results. Use a 0.05 significance level to test the claim that such polygraphresults are correct less than 80% of the time. Identify the null hypothesis, alternative hypothesis, test statistic, P-value, conclusion about the null hypothesis, and final conclusion that addresses theoriginal claim. Use the P-value method. Use the normal distribution as an approximation of the binomial distribution.Let p be the population proportion of correct polygraph results. Identify the null and alternative hypotheses. Choose the correct answer below.OA. Ho: p=0.2008. H₂: p=0.20H₁: p>0.20H₁: p<0.20c. Ho: p=0.80H₁: p<0.80OE. Ho: p=0.20H₁: p0.20The test statistic is z = (Round to two decimal places as needed.)DMonroe's Temp....docxRemoved#3Get more help.80F3EDC$4AaFARFSAMPLE Persuas....pdf A%5VFSTG6BF6MacBook AirYI' ||H&7N5373255 (1) (1).docxgaUJXD. H₂ p=0.80H₁: p*0.80OF H₂: p=0.80H₁: p>0.80*8SDIIIM1, (1)(9K5373255 (1).docxDDMoreOIH)OLcommandF10P>.Clear all-:;{option[+=?1Check answerIShow AllAmF12}1deleteretu

From the provided information, Sample size (n) = 96 From which 73 cases of correct results. Level of…

Answered: Trials in an experiment with a…

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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A local bank claims that the waiting time for its customers to be served is the lowest in the area. A competitor bank checks the waiting times at both banks. The sample statistics are listed below. Test the local bank's claim. Use the information given below. Use a significance level of .05 and assume the variances are equal. Local Bank (n = 46, avg wait time x = 2.3, sample standard deviation s = 1.1) Competitor Bank (n = 50, avg wait time x = 2.6, sample standard deviation s = 1.0) Are the samples dependent or independent? State your Null/Alternative hypotheses What is the test - statistic? What is the p-value? What are the critical values? Does the test - statistic lie in the rejection region? Interpret the Result? Does the result change for a different value of alpha? Explain? FORMULAS to get answers MUST BE SHOWN with figures
Describe the difference in the conclusions that one could draw from a sample T-test when CLT did NOT kick in, as in qqnorm() did not show a normal distribution for the sample size. What could one do instead of a T-test, and what would their test statistic be?
Obtain the confidence limits for the ratio of variances of two normal populations.
Manufacturer of a CNC machine claims that the average warm-up time for their machine is 10 minutes. We would like to test this claim at a 0.10 significance level and therefore run 10 trials that result in the folowing warnm-up durations (in minutes). Warm-up durations are assumed to follow a Normal distribution. 9.6, 9.9, 10.5. 10.4, 9.7, 9.8, 9.6, 10.3, 10.1, 9.6 Click here to view page 1 of the table of critical values of the t-distribution. Click here to view page 2 of the table of critical values of the t-distribution. (a) Choose the correct Hg and H, below. O A. H,: H> 10 against H, : u= 10 O B. H,: p= 10 against H, : u 1o O D. H: µ# 10 against H,: u= 10 O E. H,: µ OB. t (d) Choose the correct conclusion below. O A. Do not reject the null hypothesis because the average warm-up time is not significantly different from 10 minutes. O B. Reject the null hypothesis because the average wam-up time is not significantly different from 10 minutes. OC. Reject the null hypothesis because the…
The amount of water consumed each week by Bronx residences is normally distributed. The population mean of water consumption is 120.3 gallons with a standard deviation of 10.0 gallons. Test the claim at the 0.10 significance level that the average amount of water consumed is not 125 gallons with a sample size of 100 residences. Do you retain or reject the null hypothesis?
Scores on a standarized exam are known to follow a normal distribution with a standard deviation of 5. A researcher finds a random sample of 25 exam scores has a mean score of 72. Use this to find a 88% confidence interval for the mean exam score of all students taking the exam.
Small-business telephone users were surveyed 6 months after access to carriers other than Carrier A became available for wide-area telephone service. Of a random sample of 240 Carrier A users, 135 said they were attempting to learn more about their options, as did 227 of an independent random sample of 260 users of alternate carriers. Test, at the 1% significance level against a two-sided alternative, the null hypothesis that the two population proportions are the same. Click the link to view a standard normal distribution table. be the Let Px be the proportion of Carrier A users who said they were attempting to learn more about their options and Py proportion of users of alternate carriers who said they were attempting to learn more about their options. Determine the null and alternative hypotheses. Choose the correct answer below. O A. Ho: Px-Py=0 H₁: Px-Py 20 O D. Ho: Px-P₁ #0 H₁: Px - Py = 0 B. Ho: Px-Py = 0 H₁: Px-Py 0
In a random sample of males, it was found that 21 write with their left hands and 210 do not. In a random sample of females, it was found that 56 write with their left hands and 440 do not. Use a 0.05 significance level to test the claim that the rate of left-handedness among males is less than that among females. Identify the test statistic. and p value
A researcher wishes to test whether the mean of a normally distributed population is greater than 1.06 at the 5% significance level. Based upon 22 independent observations, she observes a sample mean of 1.77 and a sample standard deviation of 0.84. Determine the degrees of freedom of the null distribution of Student's t test.
3 - A water manufacturer claims that its product is 330 ML. The amount of water has a normal distribution. Quality manager takes 25 products every hour and calculate the amount of the water. The mean amount of water at 10:00 yields the average amount of 315 ML and variance of 9 ML. Test the claim that amount of the water in the bottles is at least 330 ML. Use significance level as 0.05. What is the hypothesis? What is the test statistics? If both of the answers are correct you got the points, otherwise you lose all points. (use two decimal) a ) 25.00 b) Но : и — 330 Н) : д + 330 c) Но : и 330 d) -8.33 e) O Ho : µ 330 f) 8.33 g) Η, : μ>330 Η : μ 330 O O O 0 0
A random sample of 15 hourly wages for restaurant servers (including tips) was drawn from a normal population. The sample mean and sample standard deviation were $14.9 and $6.75 respectevely.Can we infer at the 5% significance level that the mean wage for restaurant servers (including tips) is greater than 12?
In an exam imposed by a corporation on a very large number of people, we consider that the score obtained isa random variable obeying a normal law. Note mean is 65 and variance is 152.The corporationdecides that only 25% of participants will be accredited by this exam. What grade do you need to get to beaccredited?

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