The average wait time to get seated at a popular restaurant in the city on a Friday night is 15 minutes.Is the mean wait time less for men who wear a tie?Wait times for 14 randomly selected men who were wearing a tie are shown below. Assume that thedistribution of the population is normal.15, 15, 17, 16, 15, 17, 17, 17, 13, 15, 13, 17, 17, 16The null and alternative hypotheses would be:Ho: ?Select an answerHa:Select an answer V

We have given that The average wait time to get seated at a particular restaurant in a city on a…

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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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Q2. A survey is made asking people that they dinned out in the New Year Eve. Males and female are asked if they remember the name of restaurant that visited in the last new year eve. The reason of the survey to find out if there is a relation between the person's ability to recall and the gender. Use the significance level a = 0.025 to make a hypothesis test. Female Male 52 44 Can Recall Can Not Recall 23 40 APPENDIX G 859 APPENDIX G Values of X for Selected Probabilities fo2t x x²=9.2363 PROBABILITIES (OR AREAS UNDER CHI-SQUARE DISTRIBUTION CURVE ABOVE GIVEN CHI-SQUARE VALUES) 0.95 0.90 0.10 0.05 0.025 0.01 0.005 Values of Chi-Squared 0.995 0.99 0975 of 0.0158 27055 1 0.0000 0.0002 00010 0.0039 0.0158 27055 38415 50239 6.6349 7.8794 2 0.0100 0.0201 0.0506 0.1026 02107 46052 59915 7.3778 9.2104 10.5965 3 0.0717 0.1148 02158 0.3538 0.5844 6.2514 7.8147 9.3484 11.3449 12.8381 4 0.2070 0.2971 0.4844 0.7107 10636 7.7794 9.4877 11.1433 13.2767 14.8602 5 04118 0.5543 08312 1.1455 1.6103…
A random sample of 100 rich men faculty and 100 rich women faculty at a Premier University is asked if they have an automobile on campus. If 31 of the rich men and 24 of the rich women have cars, can we conclude that more men than women have cars on the campus? Use a 0.01 level of significance.
10. A snowboarding competition site is using a new design for the parallel giant slalom. The designer of the slalom is investigating whether there is a difference in the mean times taken to complete a run for men and women competitors. As part of the investigation, independent random samples of men and women who will use the slalom run are selected and their times to complete a run are recorded. Which of the following is the appropriate inference procedure by which the designer can estimate the difference in the mean completion times for men and women? A A one-sample t-interval for a sample mean A one-sample t-interval for a population mean C A matched pairs t-interval for a mean difference A two-sample t-interval for a difference between population means E A two-sample t-interval for a difference between sample means
When two births are randomly selected, the sample space for genders is bb, bg. gb, and gg. Assume that those four outcomes are equally likely. Construct a table that describes the sampling distribution of the sample proportion of girls from two births. Does the mean of the sample proportions equal the proportion of girls in two births? Does the result suggest that a sample proportion an unbiased estimator of a population proportion? For the entire population, assume the probability of having a boy is the probability of having a girl is , and this is not affected by how many boys or girls have previously been born. 2 Determine the probabilities of each sample proportion. Probability Sample proportion of girls Tune intanare or cimnlifiad frartinne
11. In professional tennis for 2017 men challenged 2100 calls and 1105 of them were changed. While women challenged 1309 calls and 625 of them were changed. Conduct a hypothesis test to test the claim that men get more calls changed than women. Use a significance level of 0.05.
determine the degrees of freedom if necessary
Forbes reports that women in general trust recommendations from Pinterest more than recommendations from any other social network platform. But does trust in Pinterest differ by gender? The following sample data show the number of women and men who state in a recent survey that they trust recommendations made on Pinterest. Sample Trust recommendations made on Pinterest Women 150 117 Men 170 102 We want to determine whether trust in Pinterest differ by gender. Formulate the null and the alternative hypotheses. Use 1 to represent women and 2 to represent men. H0: Ha: Null: p1 – p2 ≥ 0; Alternative: p1 – p2 < 0 Null: p1 – p2 = 0 ; Alternative: p1 – p2 ≠ 0 Null: p1 – p2 ≤ 0; Alternative: p1 – p2 > 0 B. What the test statistics? You probably need to find the pooled proportion first. Pooled proportion is ___________. 0.6 0.78 0.6844 C. Test statistic is ________. 3.46 1.28 66.41 4.36
Please show all of them a,b,c,d, and e
A social psychologist wants to know if there are differences in extraversion scores based on gender identity (male, female, nonbinary). She should use a ____ ANOVA. a. three-way within-groups b. one-way between-groups c. one-way within-groups d. three-way between-groups
Consider the population of car drivers in the United States, and how many traffic tickets they've each received over the course of their lives. Would the distribution of these traffic tickets be left-skewed (where we often see mean median)? Pick ONE option Left-skewed Right-skewed It would be unreasonable to guess Potentially both at once
I believe that the population mean number of times that adults go for a walk each week is less than 2.0. I spoke with 8 adults and found that they went on walks 3,5,2,1,0,4,0 and 5 times last week. Test this hypothesis at the 0.5 significance level.
Suppose we know that at a University XYZ that 30% of students receive an A in their introductory statistics class, 30% receive a B, 20% receive a C, 10% receive a D, and 10% receive an F. For comparison, a sample of 300 students at University ABC is taken and 20% received an A, 28% received a B, 26% received a C, 15% received a D, and the remaining students failed the class. When testing (at the 5% level of significance) whether the proportions between the two universities are different, what is the null and alternative hypotheses

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