Math 225n week 1 quiz Samenvattingen, Aantekeningen en Examens

MATH 225N WEEK 6 STATISTICS QUIZ | LATEST SOLUTION 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. Answer: (67, 87) Question 2 A random sample of adults were asked whether they prefer reading an e-book over a prin...

MATH 225N WEEK 6 STATISTICS QUIZ | LATEST SOLUTION 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. Answer: (67, 87) Question 2 A random sample of adults were asked whether they prefer reading an e-book over a prin...

MATH 225N Statistics Week 6 Quiz.Question 1 The population standard deviation for the heights of dogs, in inches, in a city is 3.7 inches. If we want to be 95% confident that the sample mean is within 2 inches of the true population mean, what is the minimum sample size that can be taken? Round up to the nearest integer. Answer: 14 dog heights Question 2 Clarence wants to estimate the percentage of students who live more than three miles from the school. He wants to create a 98% confidenc...

MATH 225N Week 4 Statistics Quiz (Version 1) 1. Question: Alice sells boxes of candy at the baseball game and wants to know the mean number of boxes she sells. The numbers for the games so far are ……. 16,14,14,21,15 2. Question: Given the following list of prices (in thousands of dollars) of randomly selected trucks at a car dealership, find the median…… 20,46,19,14,42,26,33 3. Question: Each person in a group shuffles a deck of cards and keeps selecting a card until a queen appears. Fin...

MATH 225N Week 6 Statistics Quiz with Answers Quiz-Week 6 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. 67,87 2. A random sample of adults were asked whether they prefer reading an e-book over a printed book. The survey resulted...

MATH 225N Statistics Week 6 Quiz.Question 1 The population standard deviation for the heights of dogs, in inches, in a city is 3.7 inches. If we want to be 95% confident that the sample mean is within 2 inches of the true population mean, what is the minimum sample size that can be taken? Round up to the nearest integer. Answer: 14 dog heights Question 2 Clarence wants to estimate the percentage of students who live more than three miles from the school. He wants to create a 98% confidenc...

MATH 225N Week 4 Statistics Quiz Solutions: Fall 2020/2021 - Attempt Score : A+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. Answer: (67, 87) Question 2 A random sample of adults were asked whether they prefer reading an ...

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MATH 225N WEEK 6 QUIZ STATISTICS – QUESTION 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. Answer: (67, 87) Question 2 A random sample of adults were asked whether they prefer reading an e- book over a p...

MATH 225N Week 6 Quiz Statistics- Question and Answers A statistics professor recently graded final exams for students in her introductory statistics course. In a review of her grading, she 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. A random sample of adults were … whether they prefer reading an e-book over a printed book. The survey resulted in a sample proportio...