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viva [34]
2 years ago
6

Hello would like to see if you can help me with question 2?

Mathematics
1 answer:
Murrr4er [49]2 years ago
8 0

Answer:

P(A or B) = 3/5

Explanation:

An independent event is an event that has no connection to another event's chances of happening. For A and B to be an independent event;

P(A or B) = P(A) + P(B)

Given the following parameters

P(A) = 1/5

P(B) = 2/5

Substituting the given parameters into the formula:

P(A or B) = 1/5 + 2/5

P(A or B) = 3/5

Hence the value of P(A or B) is 3/5

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4 0
3 years ago
The time to fly between New York City and Chicago is uniformly distributed with a minimum of 120 minutes and a maximum of 150 mi
antoniya [11.8K]

Answer:

a) 135 minutes

b) 15

c) 0.5

d) 0.3707

Step-by-step explanation:

A) What is the distribution's mean

mean(m) = (120 + 150)/2 = 270/2 = 135 minutes

B) What is the distribution's standard deviation

standard deviation(s) = \sqrt{\frac{(120-135)^{2}+(150-135)^{2}  }{2} }

s = 15

C) What is the probability that a flight is less than 135 minutes

firstly calculate z score

z score = (x - m)/s = (135 - 135)/15 = 0

P(x<135) = z(0) = 0.5

D) What is the probability that a flight is more than 140 minutes?

z score = (x - m)/s = (140 - 135)/15 = 0.33

P(x>140) = 1 - P(x<140) = 1 - 0.6293 = 0.3707

8 0
3 years ago
5. The record for the most amount of rain in the shortest period of time in the United
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