If 45% of cars are traveling in excess of 70mph, and 8 random cars are measured via radar: what is the probability that at least 1 car is going over 70mph

The required probability is 0.9916

Step-by-step explanation:

Consider the provided information.

If 45% of cars are traveling in excess of 70mph,

Therefore, p = 0.45

q = 1-p = 1-0.45 = 0.55

8 random cars are measured via radar: n = 8

We need to find at least 1 car is going over 70mph.

According to binomial distribution:

We need to find P(X≥1)

Hence, the required probability is 0.9916

a28=58

step-by-step explanation:

a1=a1+(n-1)d

a28= 4+ (28-1)2

a28=4+(27)(2)

a28=4+54

a28=58