Arandom sample of n=36 flights were taken and the time recorded to board the flight. previous studies had determined that mean time to be 40 minutes with standard deviation of 24 minutes.

a) what is the sampling distribution of the sample mean?
b) what is the probability that the average time exceeds 45 minutes?

if x = 1, then the answer is 3.5

i need points

step-by-step explanation:

sorry bubs

the correct answer option is (2x-3)(2x+3).

step-by-step explanation:

we are given the following expression and we are to factorize it:

we are to find such factors that when multiplied they give a result of 36 (9 x 4 = 36) and when added they give a result of 0.

the two such factors of 36 are negative six and postive six.

factorizing the given expression to get:

therefore, the correct factorization of is (2x-3)(2x+3).

two? xd

step-by-step explanation: