5 ?(c) Based on your answer to part (b), choose what can be concluded, at the 0.10 level of significance, about the claim made by Jessica.O Since the p-value is less than (or equal to) the level of significance, the null hypothesis is rejected. So, there is enoughevidence to support the claim that the mean number of cases directly generated by one previous case is greater than 1.2.Since the p-value is less than (or equal to) the level of significance, the null hypothesis is not rejected. So, there is notenough evidence to support the claim that the mean number of cases directly generated by one previous case is greaterthan 1.2.Since the p-value is greater than the level of significance, the null hypothesis is rejected. So, there is enough evidence tosupport the claim that the mean number of cases directly generated by one previous case is greater than 1.2.Since the p-value is greater than the level of significance, the null hypothesis is not rejected. So, there is not enoughevidence to support the claim that the mean number of cases directly generated by one previous case is greater than 1.2. An important measure in the study of contagious infectious diseases is the number of cases directly generated by one previous case. Jessica is an epidemiologiststudying the spread of an infectious disease in her country. She claimed that the mean number of cases directly generated by one previous case is now greaterthan 1.2. A study of 12 randomly selected cases of the disease is conducted and finds the sample mean number of cases directly generated by one previouscase to be 1.5 with a sample standard deviation of 0.7. Assume that the population of the number of cases directly generated by one previous case isapproximately normally distributed.Complete the parts below to perform a hypothesis test to see if there is enough evidence, at the 0.10 level of significance, to support the claim that u, the meannumber of cases directly generated by one previous case, is greater than 1.2.(a) State the null hypothesis H, and the alternative hypothesis H, that you would use for the test.Ho: 1H: 0OSOD=D0

given, population mean (µ) = 1.2 sample mean (x̄) = 0.1.5 sample standard deviation (s) = 0.7…

Answered: c) Based on your answer to part (b),…

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 analyzing the variables that explain the returns on the stock of the Boeing Com- pany. Because overall market returns are likely to explain a part of the returns on Boeing, you decide to include the returns on a value-weighted index of all the companies listed on the nySe, aMeX, and naSdaQ as an independent variable. Further, because Boeing is a large company, you also decide to include the returns on the S&P 500 index, which is a value-weighted index of the larger market-capitalization companies. Finally, you decide to include the changes in the uS dollar’s value. to conduct your test, you have collected the following data for the period 1990–2002. Rt = monthly return on the stock of Boeing in month t RALLt = monthly return on a value-weighted index of all the companies listed on the nySe, aMeX, and naSdaQ in month t RSPt = monthly return on the S&P 500 index in month t ΔXt = change in month t in the log of a trade-weighted index of the foreign exchange value of the uS…
7. A hat company found women had a mean head circumference of 57.46 cm and a standard deviationof 2.18 cm. a) Find the range of “usual” values according to the Empirical Ruleb) Is a woman’s head circumference of 50 cm considered usual or unusual?
Dr. Pugnax is interested in the preference for dog breeds among high school students. He collected the observed frequencies below and wants to know if the breeds are equally preferred. What can be concluded with ? = 0.05? Irish Setter Golden Retriever Papillon Great Dane 101 117 135 138 a) What is the appropriate test statistic? ---Select--- na z-test One-Sample t-test Independent-Samples t-test Related-Samples t-test One-Way ANOVA Within-Subjects ANOVA Two-Way ANOVA Correlation Slope Chi-Square GoF Chi-Square IndependenceCompute the statistic selected in a): b) Obtain/compute the appropriate values to make a decision about H0.Critical Value = ; Test Statistic = Decision: ---Select--- Reject H0 Fail to reject H0c) Compute the corresponding effect size(s) and indicate magnitude(s).If not appropriate, input and/or select "na" below.Effect Size = ; Magnitude: ---Select--- na trivial effect small effect medium effect large effectd) Make an interpretation based on the…
Is this correct?
The XYZ company wants to evaluate whether it discriminates against men or women in its merit pay increases. It examines the relationship between gender and the percentage of merit pay given during the last year. What is the null hypothesis? a. The mean amount of merit pay for women equals the mean amount of merit pay for men. b. The number of men who received merit pay is equal to the number of women who received merit pay. c. Men will be more likely than women to receive merit pay. d. The percentage of men receiving merit pay equals the percentage of women receiving merit pay.
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Nutritionists measured the sugar content (in grams) for 32 drinks at Jake’s Java coffee shop. The drinks had a mean sugar content of 18g and a standard deviation of 5g, and the distribution was roughly symmetric. Grande Mocha Cappuccino at Jake’s Java contains 14 g of sugar. a). Calculate the standardized score (z-score) for the Grande Mocha Cappuccino. b) what is the best interpretation for this problem (Please Prioritize answering b question) Choices for b: A. The drink has 0.8 grams of sugar less than the mean of 32 drinks. B. This drink is 0.8 standard deviation below the mean of the 32 drinks C. About 80% of the drinks have a lower sugar content than this drink D. About 80% of the drinks have higher sugar content than this drink.
2. According to a flyer created by BroadwayPartyRental.com, their 18-inch helium balloons fly,on average, for 32 hours. You purchase a SRS of 50 18-inch helium balloons from this companyand record how long they fly. You would like to know if the actual mean flight time of all balloonsdiffers from the advertised 32 hours. a) State an appropriate pair of hypotheses for a significance test in this setting. Be sure todefine the parameter of interest. b) b) A 95% confidence interval for the mean flight time (in hours) for all helium balloons is(28.5, 31.4). Based on this interval, what conclusion would you make for a test of thehypotheses in #1 at the α = 0.05 significance level?
Use the Normal mode N (100,16) describing IQ scores to answer the following. (round to one decimal place has needed.) A) what percent of people's IQs are expected to be over 85? B) what percent of people's IQs are expected to be under 95 ? C) what percent of people's IQs are expected to be between 108 and 128?
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Determine the value of ‘***’? b. Explain what is meant by Sampling Distribution ofthe Mean in the context of MBA graduates’ startingsalaries? c. What type of distribution will the SamplingDistribution of the Mean for MBA graduates’ startingsalaries follow? Give reasons for your answer. d. What are the available point estimator andestimate of the population mean starting salary? e. Which of these estimators in ‘Part (c)’ above isunbiased? Give reasons for your answer? f. Identify an available point estimate for thepopulation variance? g. Construct and interpret an 82% confidence interval of the population mean starting salary? Transcribed Image Text:A top graduate business school is interested in the starting salaries of their MBA graduates. A survey consisting of all the graduates from previous year was done and the results displayed in the table below: Mean Median Std. Dev. Std. Error MBA's 175 11,500 8,700 *** 144

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