MATH 225N (225N)

MATH 225N Week 2 Discussion Graphing and Describing Data in Everyday Life (Graded A)

MATH 225N WEEK 5 DISCUSSION, THE NORMAL DISTRIBUTION Many variables in medicine follow a normal distribution where there are approximately an equal number of values below the mean as above the mean. Describe two variables that you work with that would probably follow a normal distribution. Also note which of the two variables would be likely to have a larger standard deviation and why. Statistical data is indispensable to physicians, and the knowledge of statistics is essential not only fo...

MATH 225N WEEK 4 HOMEWORK PROBABILITY QUESTION AND ANSWERS 1. Which of the pairs of events below is dependent? ________________________________________ Select the correct answer below: ________________________________________ drawing a 7 and then drawing another 7 with replacement from a standard deck of cards rolling a 1 and then rolling a 6 with a standard die rolling a 3 and then rolling a 4 with a standard die drawing a heart and then drawing a spade without replacement from a st...

MATH 225N WEEK 6 DISCUSSION, CONFIDENCE INTERVAL Confidence Intervals In everyday terms, a confidence interval is the range of values around a sample statistic (such as mean or proportion) within which clinicians can expect to get the same results if they repeat the study protocol or intervention, including measuring the same outcomes the same ways. As you ask yourself, "Will I get the same results if I use this research?", you must address the precision of study findings, which is deter...

Question: A medical experiment on tumor growth gives the following data table……… The least squares regression line was … Using technology, it was … that the total sum of squares (SST) was 8a nd the sum of squares of regression (SSR) was 3789.0. Calculate R2, rounded to three decimal places. Question: A scientific study on mesothelioma caused by asbestos gives the following data table……. Using technology, it was … that the total sum of squares (SST)was 2 and the sum of squares due...

Question: The table shows data collected on the relationship between the time spent studying per day and the time spent reading per day. The line of best fit for the data is yˆ=0.16x+36.2. Assume the line of best fit is significant and there is a strong linear relationship between the variables….. Studying (Minutes) 50,70,90,110 Reading (Minutes) 44,48,50,54…. According to the line of best fit, what would be the predicted number of minutes spent reading for someone who spent 67minutes study...

MATH 225N WEEK 6 QUIZ STATISTICS – QUESTION AND ANSWERS Question 1 A statistics professor recently graded final exams for students in her introductory statistics course. In a review of her grading, she found the mean score out of 100 points was a x¯=77, with a margin of error of 10. Construct a confidence interval for the mean score (out of 100 points) on the final exam. ________________________________________ That is correct! ________________________________________ $$(67, 87) Answ...

MATH 225N WEEK 6 QUIZ STATISTICS – QUESTION AND ANSWERS Question 1 A statistics professor recently graded final exams for students in her introductory statistics course. In a review of her grading, she found the mean score out of 100 points was a x¯=77, with a margin of error of 10. Construct a confidence interval for the mean score (out of 100 points) on the final exam. ________________________________________ That is correct! ________________________________________ $$(67, 87) Answ...

MATH 225N Performing Linear Regressions with Technology. Questions with Answers - Chamberlain College of Nursing