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.
Answers: 1
Mathematics, 21.06.2019 15:40, sciencecreation87
Sara needs to take a taxi to get to the movies the taxi charges $4.00 for the first mile and then $2.75 for each mile after that if the total charge is $20.50 then how far was sara’s taxi ride to the movie
Answers: 2
Mathematics, 21.06.2019 16:30, catdog2230
Determine whether the quadrilateral below is a parallelogram. justify/explain your answer (this means back it up! give specific information that supports your decision. writing just "yes" or "no" will result in no credit.)
Answers: 2
Mathematics, 21.06.2019 22:10, goodygoodgirlygirl
Akitchen is 12 ft. by 14 ft. with 10 ft. high walls. how much would it cost to put vinyl flooring in this room? $8.80 per ft
Answers: 1
If the chosen card is a 3, the customer’s order is free. (Note that the probability of drawing a 3 f...
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