According to the national institute of allergy and infectious diseases about 3.7% of american adults have a food allergy. a large company plans a lunch reception for its 400 employees. assume that employees are independent. let the randome variable x be the number of company employeees who have a food allergy. the mean and standard deviation of the distribution of x are closest to

The mean of x is close to 14.8.

The standard deviation of x is close to 3.78.

Step-by-step explanation:

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and each trial can only have two outcomes, with probabilities and .

For an experiment with n repeated trials and a probability of success , we have that:

The mean is:

The standard deviation is:

In this problem

There are 400 employees, each with a probability of 3.7% of having food allergy. So . So:

The mean of x is close to 14.8.

The standard deviation of x is close to 3.78.

3. (5x + 1) - (-10x + 6)

simplify the answer choice. combine like terms. remember to distribute the negative to the terms inside the second parenthesis. also remember that two negatives = one positive, and one of each sign = negative.

- (-10x + 6) = + 10x - 6

simplify. combine like terms:

5x + 1 + 10x - 6

5x + 10x + 1 - 6

15x - 5

∴ it is your answer

~

answer: 323 is how many she has ☃☃⛄❄

step-by-step explanation: