A random variable Yhas a probability distribution given in the following table. Y 5 7 9. 11 13 P(Y = y) 0.12 0.08 0.28 0.20 0.32 Find o(17.2-3Y)

How do I find the mean?

Do you carpool? Let  X  represent the number of occupants in a randomly chosen car on a certain stretch of highway during morning commute hours. A survey of cars showed that the probability distribution of  X  is as follows. x 1 2 3 4 5 Px 0.68 0.14 0.08 0.02 0.08 Send data to Excel   Part 1 of 7     (a) Find  P1 . P1  =  .68       Part 2 of 7     (b) Find  P (greater than or equal to  2 ). P (greater than or equal to  2 ) =  .32       Part 3 of 7     (c) Find the probability that a car has only one occupant. The probability that a car has only one occupant is    .       Part 4 of 7     (d) Find the probability that a car has fewer than four occupants. The probability that a car has fewer than four occupants is    .       Part 5 of 7     (e) Compute the mean  μx .…

Is X a random variable if it has a probability distribution. Why or why not? x P(X=x) 1  0.45 2  0.31 3  0.29

Need answer of part d only

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Determine the required value of the missing probability to make the distribution a discrete probability distribution. P(x) 0.18 0.41 6 0.16 P(4) = (Type an integer or a decimal.) Enter your answer in the answer box. M Chp esc

Determine the required value of the missing probability to make the distribution a discrete probability distribution. P(x) 0.28 4 0.28 0.22 P(4) = (Type an integer or a decimal.) %3D Enter your answer in the answer box and then click Check Answer. All parts showing esc -> % 5

K The following data represent the number of drivers involved in a fatal crash in 2016 in various light and weather conditions. Complete parts (a) through (c) below. Click the icon to view the data for fatal crashes in 2016. (a) Among fatal crashes in unknown weather conditions, what is the probability that a randomly selected fatal crash occurs when it is dawn/dusk? The probability that a randomly selected fatal crash in unknown weather conditions occurs when it is dawn/dusk is approximately. (Round to three decimal places as needed.) Data table Weather Daylight Dark, but Lighted 5875 497 51 54 255 Normal Rain Snow/Sleet Other Unknown 14,307 875 219 125 810 (...) Dark 8151 681 156 220 548 Dawn/Dusk Other 1183 87 40 71 65 8 2 9 133 X