muome lall be explained by theirc) 60% of the variation in a person's annual income can be explained by the predictor variable aged) 60% of a person's annual income can be explained by their ageState the null and alternative hypotheses.12.A local retailer currently schedules employees based on the assumption that they serve customersuniformly throughout the week (the same number each day). Management is starting to question thisassumption and decides to collect data on the number of customers served each day of the week toperform a Chi-Square goodness-of-fit test at a 5% significance level.MondayTuesday Wednesday ThursdayFridayTotal2004033353260Number ServedHo: Customers are distributed evenly throughout the week.a)Ha: Customers are not distributed evenly throughout the week.Ho: Customers are not distributed evenly throughout the week.b)Ha: Customers are distributed evenly throughout the week.

The Null Hypothesis is: H0 : Customers are distributed uniformly throughout the week. The…

Answered: muome lall be explained by their c) 60%…

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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1.2. Consider the following ANOVA model of wages: WAGE, = B, + B, GENDER, + 4, where GENDER, is a dummy variable indicating whether individual i is male or female. Suppose a researcher specified GENDER, as equal to 1 if female and 2 if male. Do you see any problems with this specification? Explain.
Many investors and financial analysts believe the Dow Jones Industrial Average (DJIA) gives a good barometer of the overall stock market. On January 31, 2006, 9 of the 30 stocks making up the DJIA increased in price (The Wall Street Journal, February 1, 2006). On the basis of this fact, a financial analyst claims we can assume that 30% of the stocks traded on the New York Stock Exchange (NYSE) went up the same day.A sample of 58 stocks traded on the NYSE that day showed that 21 went up.You are conducting a study to see if the proportion of stocks that went up is is significantly more than 0.3. You use a significance level of α=0.02.What is the test statistic for this sample? (Report answer accurate to three decimal places.)test statistic = What is the p-value for this sample? (Report answer accurate to four decimal places.)p-value = The p-value is... less than (or equal to) αα greater than αα This test statistic leads to a decision to... reject the null accept the null fail to…
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Many investors and financial analysts believe the Dow Jones Industrial Average (DJIA) gives a good barometer of the overall stock market. On January 31, 2006, 9 of the 30 stocks making up the DJIA increased in price (The Wall Street Journal, February 1, 2006). On the basis of this fact, a financial analyst claims we can assume that 30% of the stocks traded on the New York Stock Exchange (NYSE) went up the same day.A sample of 52 stocks traded on the NYSE that day showed that 18 went up.You are conducting a study to see if the proportion of stocks that went up is is significantly more than 0.3. You use a significance level of α=0.10What is the test statistic for this sample? Use ˆpp^ rounded to 4 decimal places. (Report answer accurate to 4 decimal places.)test statistic = What is the p-value for this sample? (Report answer accurate to 4 decimal places.)p-value = The p-value is... less than (or equal to) α greater than α This p-value leads to a decision to... reject the null…
True or false: For a difference-in-differences estimator to be valid, outcome trends must be parallel and balanced (i.e., identical).
Nature lovers’ association of Australia, launched a campaign to encourage paper less communication and/or recycling of used papers to save the trees to reduce global warming. Hence, many small businesses have scaled up their business such as new forms of online document exchanges and collecting used papers and cardboards from households and companies. Abita Recycling Ltd is one such company which is operates in Melbourne. The financial analysist of the company has estimated that the firm would make a profit if the mean weekly collection of papers and cardboards from each household exceeded 1KG. To examine the feasibility of a recycling plant, a random sample of 100 households was selected and sample mean and standard deviations are 1.1KG and 0.35KG respectively. Following the 6-step process of hypothesis testing, you are required to examine do this information provide sufficient evidence at 99% confidence to allow the analyst to conclude that a recycling plant would be profitable?
disp hp qsec wt Use the following visualization to answer questions 2 - 4. mpg drat drat mpg qsec wt hp disp -1 -0.8 -0.6-0.4 -0.20 0.2 0.4 0.6 0.8 1
Many investors and financial analysts believe the Dow Jones Industrial Average (DJIA) gives a good barometer of the overall stock market. On January 31, 2006, 9 of the 30 stocks making up the DJIA increased in price (The Wall Street Journal, February 1, 2006). On the basis of this fact, a financial analyst claims we can assume that 30% of the stocks traded on the New York Stock Exchange (NYSE) went up the same day. A sample of 71 stocks traded on the NYSE that day showed that 24 went up. You are conducting a study to see if the proportion of stocks that went up is is significantly more than 0.3. You use a significance level of a = 0.01. What is the test statistic for this sample? (Report answer accurate to three decimal places.) test statistic = What is the p-value for this sample? (Report answer accurate to four decimal places.) p-value = The p-value is... less than (or equal to) a greater than a This test statistic leads to a decision to... reject the null accept the null fail to…
Many investors and financial analysts believe the Dow Jones Industrial Average (DJIA) gives a good barometer of the overall stock market. On January 31, 2006, 9 of the 30 stocks making up the DJIA increased in price (The Wall Street Journal, February 1, 2006). On the basis of this fact, a financial analyst claims we can assume that 30% of the stocks traded on the New York Stock Exchange (NYSE) went up the same day.A sample of 64 stocks traded on the NYSE that day showed that 24 went up.You are conducting a study to see if the proportion of stocks that went up is significantly more than 0.3. You use a significance level of α=0.01α=0.01.What is the test statistic for this sample? (Report answer accurate to three decimal places.)test statistic = What is the p-value for this sample? (Report answer accurate to four decimal places.)p-value = The p-value is... less than (or equal to) αα greater than αα This test statistic leads to a decision to... reject the null accept the null fail to…
9. A researcher finds that for female applicants, the likelihood of being hired for a job increases as their work experience increases. However, for male applicants, the likelihood of being hired decreases as their work experience increases. This finding would suggestgender and work experience have no effect on likelihood of being hired for a job. a main effect of work experience (little or a lot). an interaction between gender and work experience. a main effect of gender (male or female).
21. In a classic study of procrastination by Lay (1986), in an introductory psychology class, students received a survey that measured procrastination. Participants were instructed to complete the survey and return it to the researcher by mail. High-procrastinating partici- pants were identified by their degree of agreement with survey items like, “I often find myself performing tasks that I had intended to do days before." Interest- ingly, the researcher also measured the amount of time that it took for participants to return the survey. The following represents the number of days that some of the high procrastinators waited to return the survey: 14 15 5 2 1 2 19 6 18 a. Use a one-tailed test with a = .05 to test the hypoth- esis that high procrastinators waited more than one day to return the survey. b. Compute the 95% confidence interval for the mean amount of time required to return the survey. c. Write a sentence showing the outcome of the hypoth- esis test and the confidence…

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