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 18:30
Florence price's brownies and more sells all types of cookies and pastries. on tuesdays, they markdown all brownies 75% to a sale of $1.50 a dozen. find the selling price and the markdown of a dozen brownies.
Answers: 1
Mathematics, 21.06.2019 21:30
In a two-digit number the units' digit is 7 more than the tens' digit. the number with digits reversed is three times as large as the sum of the original number and the two digits. find the number.
Answers: 2
Mathematics, 21.06.2019 22:10
On a piece of paper, graph y< x-1. then determine which answer choicematches the graph you drew.13. z3. 2(3.290-1)
Answers: 2
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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