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# Quiz2 - STA 2023 Quiz 1 Summer A 2011 June 8th 2011 There...

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STA 2023 - Quiz 1 / Summer A 2011 June 8th, 2011 There will NOT be any partial credit for the multiple choice questions. Good luck! Name: UFID: Formulas: If X Bin ( n,p ), then E ( x ) = μ = np and standard deviation = σ = q np (1 - p ) Binomial PMF: P ( X = a ) = ± n a ² p a (1 - p ) n - a for a = 1 , 2 , 3 ,...,n Choose function: ± n k ² = n ! k !( n - k )! Standard Error of ˆ p = q p (1 - p n Standard Error of ¯ X = σ n Each question is worth the same. 1. In the NBA playoﬀs, Jason Kidd has averaged 7.4 assists per game with a standard deviation of 2.89. Suppose Kidd’s assists per game are normally distributed. Find the probability that in his next game, Jason Kidd gets more than 8 assists. (a) 0.208 (b) 0.421 (c) 0.579 (d) 0.643 2. Find the 20th percentile of Jason Kidd’s assists per game. (a) 0.208 (b) -0.84 (c) 1.48 (d) 4.97 1

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3. Suppose I have 10 cookies, 3 chocolate chip, 3 peanut butter, 2 snickerdoodle, and 2 oatmeal raisin. Find the expected number of chocolate chip cookies that I will get if I
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Quiz2 - STA 2023 Quiz 1 Summer A 2011 June 8th 2011 There...

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