Math302 week 5 - Study guides, Class notes & Summaries

MATH302 WEEK 7 TEST Part 1 of 7 - Linear Regression and Correlation; Outliers and Values of Correlation 2.0/ 2.0 Points Question 1 of 20 1.0/ 1.0 Points 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?  A. Cannot be determined with the given information  B. No  C. Yes Answer Key: C Feedback: Plug in -1.59 for x. y = 5 + .3*-1.59 ...

Week 5 Knowledge Check Homework Practice Questions Return to Assessment List Part 1 of 4 - Z-interval for Unknown Questions 7.0/ 7.0 Points Question 1 of 20 The FDA regulates that fresh Albacore tuna fish that is consumed is allowed to contain 0.82 ppm of mercury or less. A laboratory is estimating the amount of mercury in tuna fish for a new company and needs to have a margin of error within 0.03 ppm of mercury with 95% confidence. Assume the population standard deviation is 0.138 ppm of...

Week 7 Knowledge Check Homework Practice Questions Return to Assessment List Part 1 of 9 - Linear Regression and Correlation 2.0/ 2.0 Points Question 1 of 20 Which of the following equations are linear? A. 8x3+4y2  B. y=6x+8 C. 3y=6x+5y2 D. y-x=8x2 Answer Key: B Feedback: A linear equation is a linear line. If a problem has a squared or a cubed term, it isn't linear. It is a quadratic equation. Question 2 of 20 A vacation resort rents SCUBA equipment to certified divers. The ...

Week 2 Knowledge Check Homework Practice Questions Return to Assessment List Part 1 of 8 - Measures of the Spread of Data Knowledge Check Homework 1.0/ 3.0 Points Question 1 of 20 FTES 8 KB The population FTES for 2005–2006 through 2010–2011 was given in an updated report. The data are reported here. See Attached Excel for Data. Standard Deviation: 167 Calculate the standard deviation. Round to one decimal place. Answer Key: 167.0| 167 Feedback: use =STDEV.S functio...

Week 4 Knowledge Check Homework Practice Questions Return to Assessment List Part 1 of 6 - Calculations of Probabilities Questions 1.0/ 3.0 Points Question 1 of 20 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 49.9 cm and a standard deviation of 3.74 cm (Ovegard, Berndt & Lunneryd, 2012). Assume the length of fish is normally distributed. What is the length in cm of the lo...

Week 1 Knowledge Check Homework Practice Questions Return to Assessment List Part 1 of 5 - Section: Data & Sampling Knowledge Check Practice Questions 4.0/ 5.0 Points Question 1 of 20 The first 50 people who walk into a sporting event are polled on their television preferences. What type of sampling was used?  A. Convenience B. Systematic C. Stratified D. Cluster Answer Key: A Question 2 of 20 What is the sampling method used in the following scenario? A teacher wants to know if h...

Week 3 Knowledge Check Homework Practice Questions Return to Assessment List Part 1 of 6 - Binomial Distribution Knowledge Check Practice 4.0/ 5.0 Points Question 1 of 20 A coin is flipped 30 times. Find σ². Do not round answer. Answer: 7.5 Answer Key: 7.5 Feedback: 30*.5*.5 Question 2 of 20 It is known that 50% of adult workers have a high school diploma. If a random sample of 6 adult workers is selected, what is the probability that 3 or more of them have a high school diploma? ...

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Week 2 Test Return to Assessment List Part 1 of 8 - Measures of the Spread of Data Questions 3.0/ 3.0 Points Question 1 of 20 The following data are the distances between 21 retail stores and a large distribution center. The distances are in miles. See Attached Excel for Data. Find the standard deviation and round to the nearest tenth retail store 8 KB  A. 36.3 B. 79.5 C. 35.5 D. 96 E. 34.5 Answer Key: A Feedback: use =STEDV.S function in Excel. Question 2 of 20 ...