QUESTION 1 0.4 points Save Answer A family has 8 kids. What is the probability t

Question

QUESTION 1 0.4 points Save Answer A family has 8 kids. What is the probability that exactly 4 of them are girls and 4 of them are boys? Express this as a proportion. Round to 2 decimal places. QUESTION 2 0.4 points Save Answer A family has 8 children. What is the probability that 4 or more of them are boys? Express your answer as a proportion. Round to 2 decimal places QUESTION 3 0.4 points Saved A family has 8 kids. What is the probability that they were born in the order: boy. girl, boy, girl, boy. girl, boy. gir? Express your answer as a proportion. Round your answer to 4 decimal places. 0.4 points Save Answer QUESTION 4 An agronomist is tasked with evaluating one of his company's herbicides. The company claims that the herbicide will leave a garden plot completely weed- fre e 80% of the time. He apples the herbicide to 10 randomly selected garden plots. What is the probablity that less than B of them will be completely wood- free? Express your answer as a proportion. Round to 2 decimal places 0.4 points Save Answer QUESTION 5 Amy, Billy, Charlie, Danielle, Emily, and Fred are students in in the front row. How many diferent ways can she do this? Mrs. Steel's 3rd grade class. Mrs. Steel wants to arrange these 6 students' desks in a straight line

Explanation / Answer

a) Probaibliy = nCr p^r * q^r = 8C4 * 0.5^4 * 0.5^4 = 8!/[4!*4!]* 0.5^8=0.2734375

b)Probability = 4 or more boys =8C4 * 0.5^4 * 0.5^4+8C5 * 0.5^4 * 0.5^4+8C6 * 0.5^4 * 0.5^4+8C7 * 0.5^4 * 0.5^4+8C8 * 0.5^4 * 0.5^ = 0.63671875

c) P( BGBGBGBG) = 1/2^8 = 1/256

Please repost the other questions individually

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