More Fruit Fly Lifetimes
Suppose that the probability function in the table below reflects
the possible lifetimes (in months after emergence) for fruit
flies.
Fruit fly lifetimes (in months)
x |
1 |
2 |
3 |
4 |
5 |
6 |
p(x) |
0.30 |
0.25 |
0.20 |
0.10 |
0.10 |
0.05 |
(a) If we know a fruit fly died before the end of its second
month, what is the probability it died in its first month?
Round your answer to two decimal places.
(b) If a fruit fly makes it past its second month, what is the
probability it will live more than four months?
Round your answer to two decimal places.
More Fruit Fly Lifetimes Suppose that the probability function in the table below reflects the possible...
i need help with 11.89 a and b (d) What is the standard deviation of the number of cars sold in a day? Table 11.14 Cars sold in a day 0 3 4 Plx) 0.29 0.3 0.2 0.17 11.89 More Fruit Fly Lifetimes Refer to Table 11.13 in Exercise 11.87 that gives probabilities for fruit fly lifetimes. (a) If we know a fruit fly died before the end of its second month, what is the probability it died in its...
The table below shows the one-year return distribution for RCS stocks. Possible Return Ri Probability pi -40% 0.10 -20% 0.20 0% 0.15 20% 0.25 40% 0.30 (a) The expected return is: %. (Round to two decimal places.) (b) The standard deviation is: %. (Round to two decimal places.)
he probability distribution of a random variable x is given. -196 -195 191 -189 -185 p(X = x) 0.20 0.25 0.15 0.10 0.30 Compute the mean, variance, and standard deviation of X. (Round your answers to two decimal places.) mean variance standard deviation
The probability distribution of a random variable X is given. -198 -195 -191 -188 -185 p(X x) 0.20 0.25 0.30 0.15 0.10 Compute the mean, variance, and standard deviation of X. (Round your answers to two decimal places.) mean variance standard deviation Need Help? Read it
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Fifteen items or less: The number of customers in line at a supermarket express checkout counter is a random variable with the following probability distribution. 1 0.15 2 0.30 3 0.20 4 0.10 5 0.05 P(x) 0.20 Send data to Excel Part 1 of 7 (a) Find P(5). P(5) = 0 Part 2 of 7 (b) Find P(No less than 4). P(No less than 4) = Part 3 of 7 (c) Find the probability that no one is in line....