{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

2RelativeResourceManager

2RelativeResourceManager - Review Problems for Test 2 Extra...

Info icon This preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Review Problems for Test 2 Extra problems 1. The average time it takes to take test 1 is 25 minutes with a standard deviation of 12 minutes. The time it takes to take test 1 is known to be normally distributed. a. Describe this distribution. X~N(25, 12)minutes b. What is the probability a randomly selected student will take less than 27 minutes to take test 1? i. What is the random variable? X= The average time it takes to take test 1 ii. Describe this distribution. X~N(25, 12)minutes iii. Can the probability be found? Yes iv. If the probability can be found, what is it? 27 25 ( 27) ( ) 12 ( 27) ( 0.17) ( 27) 0.5675 P X P Z P X P Z P X c. If a random sample of 9 students is selected, what is the probability that the mean time to take test 1 for these 9 students is less than 27 minutes? i. What is the random variable? mean time to take test 1 for these 9 students X ii. Describe this distribution. 12 (25, ) 9 X N iii. Can the probability be found? Yes iv. If the probability can be found, what is it?
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern