Answer the following problems. Apply the different steps in hypothesis testing.1. A sales manager wanted to know whether there was significant difference in themonthly sales of four representatives. Veniz is strictly on salary and small allowance,Alyson is strictly on commission, Alyxa is on commission and small salary, and Elijahis on small commission and a salary. Five months were chosen at random. The datarepresents monthly sales in units of product.VenizAlysonAlyxaElijah2028233124223025262429263025202722262521Using 0.01 level of significance, test the hypothesis that there is no difference in themean monthly sales of the representatives.

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Answered: Answer the following problems. Apply…

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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2. In the recent Census, three percent of the U.S. population reported being of two or more races. However, the percent varies tremendously from state to state. Suppose that two random surveys are conducted. In the first random survey, out of 1,000 North Dakotans, nine people reported being of two or more races. In the second random survey, out of 500 Nevadans, 17 people reported being of two or more races. Conduct a hypothesis test to determine if the proportions are the same for the two states or if the proportion for Nevada is statistically different than that of North Dakota.
Are these samples independent or paired? Part 1 of 2 A group of eight individuals with high cholesterol had their cholesterol levels measured before the morning meal. Another group of eight individuals with high cholesterol had their cholesterol levels measured before the evening meal. The samples are (Choose one) ▼ Part 2 of 2 A group of eight individuals with high cholesterol had their cholesterol levels measured in the morning and in the evening for one week. The samples are (Choose one) ▼ X independent paired
Decide if each of the following statements is True or False. If a sample of n = 10 scores is transformed into z-scores, there will be five positive z-scores and five negative z-scores. True False
The number of traffic citations given daily by two police departments over a two week period is shown in the box and whisker plots. Which statement is not true?
Part A: There is a population of five people. They were each asked how many movies they saw in the last year. Amy saw one (1), Bob saw seven (7), Clara saw thirteen (13), Dora saw nineteen (19), and Earl saw twenty-five (25). Looking at every single possible sample of size three (with replacement). First column will be a list of every single sample (e.g., Amy, Amy, and Amy – or AAA – Amy, Amy, and Bob – or AAB – et cetera). The second column will list the mean of each sample.The third column will list the variance of each sample (using N in the denominator); and the fourth column will list the variance of each sample (using N-1 as the denominator). Calculate the means of the last three columns. To calculate the averages of the columns, put the data in a frequency table and then calculate the mean using the table. Calculate the variance of the population. Look at the values of the numbers. Which one of these means is special? Why? This will have six distinct parts: 1) the…
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Solve the following problems. Use the steps in conducting hypothesis tests.We are interested in whether the proportions of female suicide victims for ages 15 to 24 are the same for the whites and the blacks races in the United States. We randomly pick one year, 1992, to compare the races. The number of suicides estimated in the United States in 1992 for white females is 4,930. Five hundred eighty were aged 15 to 24. The estimate for black females is 330. Forty were aged 15 to 24. We will let female suicide victims be our population.
One attempt at the problem listed below. I need help with this problem.
Your job is to determine if sample (the Miami Heat) differs from the whole population (the whole NBA). In other words, are the players on the Miami Heat representative of the rest of the NBA in terms of points per game? What is the null and alternative hypothesis?
Wall Street financiers 3,800 4,100 2,200 5,300 artists 1,300 1,700 2,300 2,100 Consider a research design in which four Wall Street financiers and four artists are measured on calorie intake. Their occupation is what sort of variable, standing in as the independent variable? (This is a very short answer).
3899 you're a data analyst for an insurance company. You want to make sure that your employer is not over-paying for car repairs. To investigate this, you bring 38 different cars to two different garages, Bubba's Hubcap Heaven and Repair, and Merle's Motor Shop. Some of the cars need lots of repairs. Some of the cars need very few. By taking each car to both shops, we can directly compare the two sets of prices. Before running your analysis, be sure to look at the data file and verify that each car requires a different amount of repairs, and that prices in one shop are correlated with prices at the other shop. That is, they're in the same ballpark. The question is whether one tends to charge more, on average, than the other. Your task is to use Excel to test the research hypothesis that prices are different in the two shops; the null hypothesis is that prices are equal between the two shops. You test at the alpha = 0.01 significance level. What do you conclude? Are prices the same?…
Economy in Recession? The Quinnipiac University Poll conducts nationwide surveys as a public service and for research. This problem is based on the results of one such poll. Independent simple random samples of registered Democrats, Republicans, and Independents were asked, “Do you think the United States economy is in a recession now?” Of the 628Democrats sampled, 220 responded “yes,” as did 349 of the 471 Republicans sampled and 342 of the 646 Independents sampled. At the 1% significance level, do the data provide sufficient evidence to conclude that a difference exists in the percentages of registered Democrats, Republicans, and Independents who thought the U.S. economy was in a recession at the time?

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