Question 2 a) There is small parking lot behind a Floral Shop that has two parking lot spaces. Let X be the number of cars parked in the parking lot at midday. The probability distribution of X is given by x 0 1 2 3 P(X = x) 0.1 0.25 a 0.35 (i) What is the value of a? (ii) (iii) What is the probability that there will be at most 1 car in the parking lot? Calculate the expected number of cars in the parking lot at midday [1] [2] (iv) Calculate the variance. [3]
Question 2 a) There is small parking lot behind a Floral Shop that has two parking lot spaces. Let X be the number of cars parked in the parking lot at midday. The probability distribution of X is given by x 0 1 2 3 P(X = x) 0.1 0.25 a 0.35 (i) What is the value of a? (ii) (iii) What is the probability that there will be at most 1 car in the parking lot? Calculate the expected number of cars in the parking lot at midday [1] [2] (iv) Calculate the variance. [3]
Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter12: Probability
Section12.4: Discrete Random Variables; Applications To Decision Making
Problem 1E
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