MATH 221 Week 2 Homework Results (Fall 2018)
- Question: According to company records, the probability that a washing machine will break in the first year is 4%. This would be considered:
- Question: Consider the following table. What is probability of no, given blue?
- Question: In a sample of 587 customers, 308 say they are happy with the service. If you select three customers without replacement for a commercial, what is the probability they will all say they are happy with the service?
- Question: A company sells 14 types of crackers that they label varieties 1 through 14, based on spice level. What is the probability that the purchase results in a selection of a cracker with an odd number, or a number greater than 11?
- Question: Of the shirts produced by a company, 5.5% have loose threads, 8.5% have crooked stitching, and 3.5% have loose threads and crooked stitching. Find the probability that a randomly … shirt has loose threads or has crooked stitching.
- Question: In a sample of 80 adults, 28 said that they would buy a car from a friend. Three adults are … at random without replacement. Find the probability that none of the three would buy a car from a friend.
- Question: A smartphone company found in a survey that 17% of people did not own a smartphone, 18% owned a smartphone only, 29% owned a smartphone and only a tablet, 21% owned a smartphone and only a computer, and 15% owned all three. If a person were … at random, what is the probability that the person would own a smartphone only or a smartphone and computer?
- Question: The probability of drawing one card and getting queen is 4/52. This would be
- Question: Given the following information, find the probability that a randomly … dog will be a golden retriever. Number of dogs who are poodles: 31, golden retrievers: 58, beagles:
- Question: Given that there is a 23% chance it will rain on any day, what is the probability that it will rain on the first day and be clear (not rain) on the next two days?
- Question: Consider the following table. What is the probability of no?
- Question: A card is randomly … from a standard deck of 52 cards. What is P(red)?
- Question: A company finds that when they pay employees more, the employees are more productive. How would you classify these events, based on this finding?
- Question: A company sells 14 types of crackers that they label varieties 1 through 14, based on spice level. What is the probability that one purchase results in a selection of a cracker with an even number or a number less than 5?
- Question: In a sample of 800 adults, 228 said that they liked sugar cereals. Three adults are … at random without replacement. Find the probability that all three like sugar cereals.
- Question: An investment advisor believes that there is a 60% chance of making money by investing in a specific stock. If the stock makes money, then there is a 50% chance that among those making money, they would also get a dividend. Find the probability that the investor makes money and does not receive a dividend.
- Question: A smartphone company found in a survey that 20% of people did not own a smartphone, 28% owned a smartphone only, 14% owned a smartphone and only a tablet, 13% owned a smartphone and only a computer, and 25% owned all three. If a person were … at random, what is the probability that the person would own a smartphone only or a smartphone and computer?
- Question: In a sample of 528 customers, 484 say they are happy with the service. If you select three customers without replacement for a commercial, what is the probability they will all say they are happy with the service?
- Question: A company sells 14 types of crackers that they label varieties 1 through 14, based on spice level. What is the probability that the purchase results in a selection of a cracker with number less than 4, or a number greater than 9?
- Question: In a sample of 780 adults, 209 said that they liked sugar cereals. Three adults are … at random without replacement. Find the probability that all three like sugar cereals.
- Question: A sock drawer has 17 folded pairs of socks, with 9 pairs of white, 5 pairs of black and 3 pairs of blue. What is the probability, without looking in the drawer, that you will first select and remove a black pair, then select either a blue or a white pair?
- Question: Given the following information, find the probability that a randomly … student will be very tall. Number of students who are very short: 45, short: 60, tall: 82, very tall: 21
- Question: In a sample of 350 customers, 105 say that service is poor. You select two customers without replacement to get more information on their satisfaction. What is the probability that both say service is poor?
- Question: In a sample of 487 customers, 301 say they are happy with the service. If you select three customers without replacement for a commercial. What is the probability they will all say they are happy with the service?
- Question: Given the following information, find the probability that a randomly … student will be very short. Number of students who are very short: 45, short: 60, tall: 82, very tall: 21
- Question: Given that there is a 28% chance it will rain on any day. What is the probability that it will rain on the first day and be clear (not rain) on the next two days?
- Question: A card is randomly … from a standard deck of 52 cards. What is P(heart)?
- Question: A salesperson purchases the deli’s specialty sandwich one day. A mechanic purchases the deli’s specialty sandwich the next day. How would you classify these events?
- Question: In a sample of 800 adults, 242 said that they liked sugar cereals. Three adults are … at random without replacement. Find the probability that all three like sugar cereals.
- Question: A smartphone company found in a survey that 6% of people did not own a smartphone, 15% owned a smartphone only, 26% owned a smartphone and only a tablet, 32% owned a smartphone and only a computer, and 21% owned all three. If a person were … at random, what is the probability that the person would own a smartphone only or a smartphone and computer?
- Question: Match the terms and their definitions.
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