Answer: Mean = 5.25
Variance = 1.3125
Standard deviation = 1.456
Step-by-step explanation:
The mean and variance of a binomial distribution with parameters n (number of trials) and p ( the probability of getting success in each trial) is given by :-

Given : The total number of enter a clothing store : n=7
The probability of a customer making a purchase= 0.75
Now,

Answer:
12 have a good day
Step-by-step explanation:
<h3>Answer is -2</h3>
I hope it is helpful for you ....
Answer:
90 degrees
Step-by-step explanation: