{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Ch 2 Review Key p1 - AP Statistics Ch 2 Review Name K6 2...

Info icon This preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: AP Statistics Ch 2 Review ' Name K6 2) Per: Use the following to answer questions 1-3: .fi O I 15 2' 1. IIEIH a ensity curve, what percentage of the observations lies above 1.5? b) 50%. c) 75%. d) 80%. 2. For this density curve, which of the following is true? a) It is symmetric. b) The total area under the curve is 1. c) The median is 1. @f the above. 3. For the density curve shown, what percentage of the observations lies between 0.5 and 1.2? a 2 ° ‘3 3332: (50(5) .— 33' d) 70%. 4. Items produced by a manufacturing process are supposed to weigh 90 grams. The manufacturing process is such, however, that there is variability in the items produced and they do not all weigh exactly 90 grams. The distribution of weights can be approximated by a normal distribution with mean 90 grams and a standard deviation of 1 gram. Using the 68—95—99? rule, what percentage of the items will either weigh less than 87 grams or more than 93 grams? a) 6%. b) 94%. 6 9.90.734- d) 0.3%. 5. Using the standard normal distribution tables, what is the area under the standard normal curve corresponding to —O.5 < Z < 1.2? ‘ a) 0.3085. b) 0.3349. ...
View Full 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