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MATH302 Week 8 Test 8 Critique

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MATH302 Week 8 Knowledge Check Homework Practice Questions

1. Question: A company manager believes that a person's ability to be a leader is directly correlated to their zodiac sign. He never selects someone to chair a committee without first evaluating their zodiac sign. An irate employee sets out to prove her manager wrong. She claims that if zodiac sign truly makes a difference in leadership, then a random sample of 210 CEO's in our country would reveal a difference in zodiac sign distribution. She finds the following zodiac signs for her random sa...

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Math302 Week 8 Final Project

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During the search and gathering on the data of the 17 cites provided for us, the set cost of living, I have made my conclusion. The city I found most appropriate to set up a new location (internationally) would be the city of Mumbai. With all the gathered data in the excel sheet, I was able to transfer in the data into two tabs. On one of the tabs, it mentions the cities along with cost, and distinct amenities. While the other tab shows multiple linear regression or in this case MLR. We used the...

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MATH302 Week 8 Discussion; How Will You Use Statistics

How will you use the information in the future? This is your opportunity to consider and then share how you will employ the knowledge that you have gained during our course.

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MATH302 Week 7 Test

1. Question: The least squares regression line for a data set is yˆ=5+0.3x and the standard deviation of the residuals is 0.4. Does a case with the values x = 3.3, y = 7.2 qualify as an outlier? 2. Question: The least squares regression line for a data set is yˆ=5+0.3x and the standard deviation of the residuals is 0.52. Does a case with the values x = -1.59, y = 5.78 qualify as an outlier? 3. Question: The following data represent the weight of a child riding a bike and the rolling distance...

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MATH302 Week 7 Test 7 Critique

MATH302 Week 7 Test 7 Critique

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MATH302 Week 7 Knowledge Check Homework Practice Questions

1. Question: A vacation resort rents SCUBA equipment to certified divers. The resort charges an up-front fee of $25 and another fee of $12.50 an hour. What is the dependent variable? 2. Question: Which of the following equations are linear? 3. Question: You are thinking about opening up a Starbucks in your area but what to know if it is a good investment. How much money do Starbucks actually make in a year? 4. Question: You move out into the country and you notice every Spring there are more ...

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MATH302 Week 7 Discussion; Regression and Correlation

MATH302 Week 7 Discussion; Regression and Correlation

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MATH302 Week 6 Test

1. Question: A manager wishes to see if the time (in minutes) it takes for their workers to complete a certain task is faster if they are wearing earbuds. A random sample of 20 workers' times were collected before and after wearing earbuds. Test the claim that the time to complete the task will be faster, i.e. meaning has production increased, at a significance level of α = 0.01 For the context of this problem, µD = µbefore−µafter where the first data set represents before earbuds and the...

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MATH302 Week 6 Test 6 Critique

MATH302 Week 6 Test 6 Critique

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MATH302 Week 6 Knowledge Check Homework Practice Questions

1. Question: An adviser is testing out a new online learning module for a placement test. They wish to test the claim that on average the new online learning module increased placement scores at a significance level of α = 0.05. For the context of this problem, μD=μnew–μold where the first data set represents the new test scores and the second data set represents old test scores. Assume the population is normally distributed. 2. Question: A researcher is testing reaction times between the...

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MATH302 Week 6 Knowledge Check Homework Practice Questions

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MATH302 Week 6 Discussion; Table

MATH302 Week 6 Discussion; Table

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MATH302 Week 6 Discussion; Hypothesis testing I and II Testing differences between means variances and proportions

MATH302 Week 6 Discussion; Hypothesis testing I and II Testing differences between means variances and proportions

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MATH302 Week 5 Test

1. Question: The population standard deviation for the height of college football players is 2.7 inches. If we want to estimate a 95% confidence interval for the population mean height of these players with a 0.65 margin of error, how many randomly selected players must be surveyed? 2. Question: The population standard deviation for the height of college basketball players is 2.9 inches. If we want to estimate a 99% confidence interval for the population mean height of these players with a 0.45...

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MATH302 Week 5 Test 5 Critique

MATH302 Week 5 Test 5 Critique

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MATH302 Week 5 Knowledge Check Homework Practice Questions

1. Question: Suppose a marketing company wants to determine the current proportion of customers who click on ads on their smartphones. It was estimated that the current proportion of customers who click on ads on their smartphones is 0.68. How many customers should the company survey in order to be 97% confident that the margin of error is 0.29 for the confidence interval of true proportion of customers who click on ads on their smartphones? 2. Question: There is no prior information about the ...

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MATH302 Week 5 Discussion; Confidence Intervals and Sample Size

MATH302 Week 5 Discussion; Confidence Intervals and Sample Size

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MATH302 Week 4 Test

1. Question: A dishwasher has a mean life of 11.5 years with an estimated standard deviation of 1.5 years ("Appliance life expectancy," 2013). Assume the life of a dishwasher is normally distributed. Find the number of years that the bottom 10% of dishwasher would last. Round answer to 2 decimal places. 2. Question: The size of fish is very important to commercial fishing. A study conducted in 2012 found the length of Atlantic cod caught in nets in Karlskrona to have a mean of 47.8 cm and a s...