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18% of biscuits made by a baker are chocolate chip cookies. 9 biscuits are selected at random. a) Assuming a binomial distribution for X, the number of chocolate chip cookies, write down the values of n and p. X~ bin(n,p) n = p= Find E[X] the expected number of chocolate chip cookies in our sample: E[X] = Find the standard deviation for the number of chocolate chip cookies in ou sample: Standard deviation = (to 3 decimal places).

18% of biscuits made by a baker are chocolate chip cookies. 9 biscuits are selected at random. a) Assuming a binomial distribution for X, the number of chocolate chip cookies, write down the values of n and p. X~ bin(n,p) n = p= Find E[X] the expected number of chocolate chip cookies in our sample: E[X] = Find the standard deviation for the number of chocolate chip cookies in ou sample: Standard deviation = (to 3 decimal places).

College Algebra (MindTap Course List)
College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter8: Sequences, Series, And Probability
Section8.7: Probability
Problem 44E
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18% of biscuits made by a baker are chocolate chip cookies. 9 biscuits are selected at random. a) Assuming a binomial distribution for X, the number of chocolate chip cookies, write down the values of n and p. X~ bin(n, p) n = p= Find E[X] the expected number of chocolate chip cookies in our sample: E[X] = Find the standard deviation for the number of chocolate chip cookies in our sample: Standard deviation = (to 3 decimal places).
Transcribed Image Text:18% of biscuits made by a baker are chocolate chip cookies. 9 biscuits are selected at random. a) Assuming a binomial distribution for X, the number of chocolate chip cookies, write down the values of n and p. X~ bin(n, p) n = p= Find E[X] the expected number of chocolate chip cookies in our sample: E[X] = Find the standard deviation for the number of chocolate chip cookies in our sample: Standard deviation = (to 3 decimal places).
b) Find the probability that our selection contains exactly 4 chocolate chip cookies. P(X= 4) = (to 3 decimal places). Find the probability that our selection contains no more than 2 chocolate chip cookies. Probability= * (to 3 decimal places).
Transcribed Image Text:b) Find the probability that our selection contains exactly 4 chocolate chip cookies. P(X= 4) = (to 3 decimal places). Find the probability that our selection contains no more than 2 chocolate chip cookies. Probability= * (to 3 decimal places).
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the standered deviation is wrong can you check that?

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