subject
Mathematics, 08.04.2020 17:32 owenr4758

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.

ansver
Answers: 1

Another question on Mathematics

question
Mathematics, 21.06.2019 17:00
Need solving this second acceleration problem.
Answers: 1
question
Mathematics, 21.06.2019 18:30
Anormally distributed data set has a mean of 176.3 and a standard deviation of 4.2. what is the approximate z-score for the data value of 167.9? 2.00 −2.00 8.4 −8.4
Answers: 2
question
Mathematics, 21.06.2019 18:40
Which expression gives you the distance between the points (5,1)and(9,-6)
Answers: 2
question
Mathematics, 21.06.2019 19:10
Which of the following is the shape of a cross section of the figure shown below
Answers: 3
You know the right answer?
If the chosen card is a 3, the customer’s order is free. (Note that the probability of drawing a 3 f...
Questions
question
Chemistry, 28.08.2019 15:30