If the chosen card is a 3, the customer’s order is free. (Note that the probability of drawing a 3 from a
standard deck of playing cards is 4/52). Otherwise, the customer must pay the bill. Suppose that 250
customers place lunch orders on the first day of the promotion. Let X = the number of people who win a
free lunch.
1. Explain why X is a binomial random variable.
2. Find the mean of X. Interpret this value is context.
3. Find the standard deviation of X. Interpret this value is context.
4. One of the customers is surprised when only 10 people win a free lunch. Should the customer
be surprised? Find the probability that 10 or fewer people win a free lunch by chance alone and
use this result to support your answer.

2. angles qrt and qst both measures 156 degrees.

step-by-step explanation:  

we have been given a diagram of a circle and we are told that measure of arc qvt is 156 degrees.  

we can see from our given diagram that angle qrt and angle qst subtends to arc qvt.

since we know that angles subtended by the same arc at the circumference are always equal.

by angle subtended by same arc theorem, measure of angle qrt and angle qst will be equal to the measure of arc qvt.

therefore, angles qrt and qst both measures 156 degrees and 2nd statement is the correct choice.

b.-4 units

all you   do is count how many times you move

answer: you need the equation in the question so i can answer it

step-by-step explanation:

the answer is b.

64

step-by-step explanation:

c=2πr=2·π·8≈64