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American Military University *

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302

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Statistics

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Apr 3, 2024

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docx

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Uploaded by BaronResolve13851

n 1 1 It is known that 40% of adult workers have a high school diploma. If a random sample of 10 adult workers is selected, what is the expected number of adult workers with a high school diploma? (That is, what is E(X)?) Round to the whole number. Do not use decimals. Answer: ___4 ___ uestion 1 feedback on 2 0 / It is known that 50% of adult workers have a high school diploma. If a random sample of 6 adult workers is selected, what is the probability that 3 or more of them have a high school diploma? (That is, find P(X ≤ 3) (round to 4 decimal places) Answer: 3) (round to 4 decimal places) Answer: ___0.3438 ___ (0.6563, .6563) uestion 2 feedback 3) = 1 - P(x ≤ 2), in Excel NOM.DIST(2,6,0.5,TRUE) on 3 1 / Suppose a random variable, x, arises from a binomial experiment. If n = 14, and p = 0.13, find the standard deviation. Round answer to 4 decimal places. Answer:___ ___1.2583 ___ uestion 3 feedback

el, T(14*0.13*0.87) on 4 1 / Approximately 10% of all people are left-handed. If 200 people are randomly selected, what is the expected number of left- handed people? Round to the whole number. Do not use decimals. Answer: ___20 ___ uestion 4 feedback 0 on 5 1 / If random variable X has a binomial distribution with n =10 and P(success) = p =0.6, find the probability that X is more than 3. (That is, find P(X>3) (round to 4 decimal places) Answer: ___0.9452 ___ uestion 5 feedback ) = 1 - P(x≤3), in Excel NOM.DIST(3,10,0.6,TRUE) on 6 1 / The table shows a random sample of musicians and how they learned to play their instruments. Gender Self-Taught Studied in School Private Instruction Total Female 12 38 22 72 Male 19 24 15 58 Total 31 62 37 130

Find P (musician is a male AND had studied in School). 0.71 0.12 0.88 0.18 Hide question 6 feedback 24/130 n 7 1 In a box there are 3 red cards and 5 blue cards. The cards are well-shuffled. If you pick a card without looking at the box, what is the probability that you pick a red card? (round to 3 decimal places) Answer: ___.375 ___ uestion 7 feedback on 8 1 / The California license plate has one number followed by three letters followed by three numbers. How many different license plates are possible? Do not use commas in your answer. Answer: ___175760000 ___ uestion 8 feedback * 10 3 on 9 1 / The number of M&M's for each color found in a case were recorded in the table below. Blue = 481, Brown = 371, Green = 483, Orange = 544, Red = 372, Yellow = 369

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