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  • College Open Textbooks display tagshide tags

    This collection is included inLens: Community College Open Textbook Collaborative
    By: CC Open Textbook Collaborative

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    "Reviewer's Comments: 'I recommend this book. Overall, the chapters are very readable and the material presented is consistent and appropriate for the course. A wide range of exercises introduces […]"

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    This collection is included inLens: Jesuit Virtual Learning Academy Endorsed Material
    By: Jesuit Virtual Learning Academy

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    "This is a robust collection (textbook) approved by the College Board as a resource for the teaching of AP Statistics. "

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    This collection is included inLens: WebAssign The Independent Online Homework and Assessment Solution
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    This collection is included inLens: Florida Orange Grove Textbooks
    By: Florida Orange Grove

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    By: Bookshare - A Benetech Initiative

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  • Featured Content display tagshide tags

    This collection is included inLens: Connexions Featured Content
    By: Connexions

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    "Collaborative Statistics was written by two faculty members at De Anza College in Cupertino, California. This book is intended for introductory statistics courses being taken by students at two- […]"

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  • statistics display tagshide tags

    This collection is included inLens: Statistics
    By: Brylie Oxley

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  • Lucy Van Pelt display tagshide tags

    This collection is included inLens: Lucy's Lens
    By: Tahiya Marome

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    "Part of the Books featured on Community College Open Textbook Project"

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  • Educational Technology Lens display tagshide tags

    This collection is included inLens: Educational Technology
    By: Steve Wilhite

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  • statf12

    This collection is included inLens: Statistics Fall 2012
    By: Alex Kolesnik

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  • UTEP display tagshide tags

    This collection is included inLens: Amy Wagler's Lens
    By: Amy Wagler

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  • Make Textbooks Affordable

    This collection is included inLens: Make Textbooks Affordable
    By: Nicole Allen

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  • BUS204 Homework display tagshide tags

    This collection is included inLens: Saylor BUS 204 Homework
    By: David Bourgeois

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    "Homework for Discrete Variables/Probability. "

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  • crowe

    This collection is included in aLens by: Chris Rowe

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  • Bio 502 at CSUDH display tagshide tags

    This collection is included inLens: Bio 502
    By: Terrence McGlynn

    Comments:

    "This is the course textbook for Biology 502 at CSU Dominguez Hills"

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The next two questions refer to: X X ~ U ( 3 , 13 ) U(3,13)

Exercise 1

Explain which of the following are false and which are true.

  • a: f(x)=110f(x)=110 size 12{f \( x \) = { {1} over {"10"} } } {}, 3≤x≤133≤x≤13 size 12{3 <= x <= "13"} {}
  • b: There is no mode.
  • c: The median is less than the mean.
  • d: P ( x > 10 ) = P ( x ≤ 6 ) P ( x > 10 ) = P ( x ≤ 6 ) size 12{P \( x>"10" \) =P \( x <= 6 \) } {}
[ Show Solution ]

Exercise 2

Calculate:

  • a: Mean
  • b: Median
  • c: 65th percentile.
Horizontal boxplot with first whisker at 0 to 2, box from 2 to 5, line at 4, and second whisker from 5 to 7.
[ Show Solution ]

Exercise 3

Which of the following is true for the above box plot?

  • a: 25% of the data are at most 5.
  • b: There is about the same amount of data from 4 – 5 as there is from 5 – 7.
  • c: There are no data values of 3.
  • d: 50% of the data are 4.
[ Show Solution ]

Exercise 4

If P(G∣H)=P(G)P(G∣H)=P(G) size 12{P \( G \lline H \) =P \( G \) } {}, then which of the following is correct?

  • A: GG size 12{G} {} and HH size 12{H} {} are mutually exclusive events.
  • B: P ( G ) = P ( H ) P ( G ) = P ( H ) size 12{P \( G \) =P \( H \) } {}
  • C: Knowing that HH size 12{H} {} has occurred will affect the chance that GG size 12{G} {} will happen.
  • D: GG size 12{G} {} and HH size 12{H} {} are independent events.
[ Show Solution ]

Exercise 5

If P(J)=0.3P(J)=0.3 size 12{P \( J \) =0 "." 3} {}, P(K)=0.6P(K)=0.6 size 12{P \( K \) =0 "." 6} {}, and JJ size 12{J} {} and KK size 12{K} {} are independent events, then explain which are correct and which are incorrect.

  • A: P( J and K)P( J and K) = 0 = 0
  • B: P( J or K) = 0.9P( J or K) = 0.9
  • C: P( J or K) = 0.72P( J or K) = 0.72
  • D: P ( J ) ≠ P (J ∣K) P ( J ) ≠ P (J ∣K)
[ Show Solution ]

Exercise 6

On average, 5 students from each high school class get full scholarships to 4-year colleges. Assume that most high school classes have about 500 students.

XX = the number of students from a high school class that get full scholarships to 4-year school. Which of the following is the distribution of XX?

  • A. P(5)
  • B. B(500,5)
  • C. Exp(1/5)
  • D. N(5, (0.01)(0.99)/500)
[ Show Solution ]

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Definition of a lens

Lenses

A lens is a custom view of the content in the repository. You can think of it as a fancy kind of list that will let you see content through the eyes of organizations and people you trust.

What is in a lens?

Lens makers point to materials (modules and collections), creating a guide that includes their own comments and descriptive tags about the content.

Who can create a lens?

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Definition of a lens

Lenses

A lens is a custom view of the content in the repository. You can think of it as a fancy kind of list that will let you see content through the eyes of organizations and people you trust.

What is in a lens?

Lens makers point to materials (modules and collections), creating a guide that includes their own comments and descriptive tags about the content.

Who can create a lens?

Any individual member, a community, or a respected organization.

What are tags? tag icon

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