List of Solutions

Hypothesis Testing is the use of statistics to determine the probability that a given claim is true. In Part II of this project, you will choose a data set, review… Read More »(Answer) MATH399N – Week 7 Assignment: Course Project Part II

Required Resources Read/review the following resources for this activity: Textbook: Chapter 9 (All Sections) Lesson Minimum of 1 scholarly source Initial Post Instructions After reviewing data from a sample, an… Read More »(Answer) MATH399N – Week 7 Discussion: Rejection Region

QUESTIONS Question 1 Assume the distribution of commute times to a major city follows the normal probability distribution and the standard deviation is 4.5 minutes. A random sample of 38 commute times is given… Read More »(Answer) MATH399N – Week 6 Assignment: Calculating Confidence Intervals with Technology – Excel

QUESTIONS Question 1 A research intern would like to estimate, with 90% confidence, the true proportion of employees who hold two jobs. No preliminary estimate is available. The researcher wants the estimate to be within 3% of… Read More »(Answer) MATH399N – Week 6 Assignment: Confidence Intervals for Population Proportion

QUESTIONS Question 1 The commute times for workers in a city are normally distributed with an unknown population mean and standard deviation. If a random sample of 20 workers is taken and… Read More »(Answer) MATH399N – Week 6 Assignment: Confidence Interval for Population Mean- Population Standard Deviation UnKnown

QUESTIONS Question 1 Suppose the number of dollars spent per week on groceries is normally distributed. If the population standard deviation is 7 dollars, what minimum sample size is needed to be 90% confident… Read More »(Answer) MATH399N – Week 6 Assignment: Confidence Interval for Population Mean- Population Standard Deviation Known

QUESTIONS Question 1 The weights, in pounds, of the cats in an animal adoption center are normally distributed. If a random sample of cats is taken and the confidence interval… Read More »(Answer) MATH399N – Week 6 Assignment: Confidence Intervals

Required Resources Read/review the following resources for this activity: Textbook: Chapter 8 Lesson Scenario/Summary You will complete a Course Project in this course that will span two weeks. The final… Read More »(Answer) MATH399N – Week 6 Assignment: Course Project Part I

Required Resources Read/review the following resources for this activity: Textbook: Chapter 8 (All Sections) Lesson Minimum of 1 scholarly source Initial Post Instructions Find an example of a confidence interval… Read More »(Answer) MATH399N – Week 6 Discussion: Confidence Interval Concepts