Question 4 what is the lottery\'s standard deviation of profit perticket? Note:

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Question 4 what is the lottery's standard deviation of profit perticket? Note: Answer Questions 5-11 by Using the Excel output A recent Wall Street Journal article indicated that 40% of American teenagers use Pandora's online radio service. Suppose a sample of 25 American teenagers are selected. (See exercise 38 on page 249 in your textbook for similar problem.) Based on this information, generate a cumulative binomial probability distribution in the given space on the pandora sheet in this workbook to answer the following questions. Each orange numerical answer cell below MUST reference Excel output cells in the Pandora Sheet. Question 5 Find the probability that exactly 13 American teenagers do not use Pandora's online radio service HWNotes HWExcel Directions HW Pandora Ready a a O Ask me anything

Explanation / Answer

a)P(At least 12 donot use)=P(At most 12 use)=CDF(12)=0.8462

b)P(No more than 6 use)=CDF(6)=0.0736

c)P(|X-mean|>=3)=P(X=<mean-3)+P(X>=mean+3)

Mean=25*0.4=10

Prob=P(X>=13)+P(X<=7)=1-0.9222+0.1536=0.2314

d)P(X>3)=1-CDF(3)=1-0.0024=0.9976

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