Assume that you have a bucket containing 10 balls of the following description:
ID: 3173002 • Letter: A
Question
Assume that you have a bucket containing 10 balls of the following description: 4 are white (w) and lettered (L) 2 are white (W) and numbered (N) 3 are yellow (Y) and lettered (L) 1 is yellow (Y) and numbered (N) If you draw a numbered ball (N), the probability that this ball was white (W) = 0.667 or 66.7% (approximately). True False If the sale of ice cream and pizza are independent, then as ice cream sales by 60 percent during the winter months, sales will increase by 60 percent. increase by 40 percent. decrease by 60 percent. decrease by 40 percent. be unrelated. suppose that 10 golfers enter a tournament and that their respective skill lev approximately the same. What is the probability that one of the first three golfer registered for the tournament will win? 0.100 0.001 0.300 0.299 0.700 The number of cell phone minutes used by high school seniors follows distribution with a mean of 500 and a standard deviation of 50. What is the that a student uses fewer than 600 minutes? 0 0.023 0.841 0.977 The difference in decision making under risk and decision making ur is that under risk, we think we know the probabilities of the states of uncertainty we do not know the probabilities of the states of nature. True FalseExplanation / Answer
WL - 4, WN- 2, YL - 3, YN - 1. Total = 10,
We can derive this, N - 3, W - 6, L - 7, Y - 4.
if a numberered ball is taken, the chance of white ball = P (white and numbered ball)/ P (numbered ball) = 2/3 = 0.667
TRUE
2. E. unrelated.
Meaning of independence, effect of one variable doesn't effect the other. They are two different factors entirely and donot depend on each other
3. Let the order of golfers be G1 G2 G3 G4 G5...G10
P(Gi winning) = 0.1 since all have equal chances
One of the first 3 wins the tournaments means = P(G1) + P(G2) + P(G3) = 0.1*3 = 0.3
c) 0.3
4. mu = 500, sigma = 50
x = 600, transform it to z = (x-mu)/sigma = 2
P(X < 600) = P(Z<2) = 0.977
d) 0.977
5. 18th question' statement is missing partially, so cannot answer that