The number of customers received by a drive-through pharmacy on saturday mornings between 8: 00 am and 9: 00 am has a poisson distribution with λ (lambda) equal to 1.4. what is the probability of getting at least 2 customers between 8: 00 am and 9: 00 am in the morning?

0.4082

Step-by-step explanation:

Given that the number of customers received by a drive-through pharmacy on Saturday mornings between 8:00 AM and 9:00 AM has a Poisson distribution with λ (Lambda) equal to 1.4.

X has Poisson mean=1.4

the probability of getting at least 2 customers between 8:00 am and 9:00 am in the morning

=

Required probability = 0.4082

he spend 5.1 minutes chatting with his friends.

step-by-step explanation:

2/5+1/2=9/10

6/1-9/10=5.1

d. 8

step-by-step explanation:

the given radical expression is:

we can rewrite this as:

we express as square numbers to get;

the exponents will now cancel out to give.

the correct answer is d