In a recent survey of homes in a major Midwestern city, 10% of the homes have...
In a recent survey of homes in a major Midwestern city, 10% of
the homes have a fax machine and 55% have a personal computer.
Suppose 7% of the homes with a fax machine also have a personal
computer. What is the probability that a home has a fax machine or
a personal computer?
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In a recent survey of homes in a major Midwestern city, 10% of
the homes have...
According to the Consumer Electronics Manufacturers Association, 10% of all U.S. households have a fax machine...
According to the Consumer Electronics Manufacturers Association, 10% of all U.S. households have a fax machine and 52% have a personal computer. Suppose 91% of all U.S. households having a fax machine also have a personal computer. What is the probability that a randomly selected U.S. household has a fax machine and a personal computer? What is the probability that a randomly selected U.S. household has a fax machine or a personal computer? What is the probability that a randomly...
According to the Consumer Electronics Manufacturers Association, 10% of all U.S.households have a fax machine and...
According to the Consumer Electronics Manufacturers Association, 10% of all U.S.households have a fax machine and 52% have a personal computer. Suppose 91% of all U.S. households having a fax machine have a personal computer. A U.S.household is randomly selected. a. What is the probability that the household has a fax machine and a personal computer? b. What is the probability that the household has a fax machine or a personal computer? c. What is the probability that the household...
According to a recent survey 60% of households have personal computers. If a random sample of...
According to a recent survey 60% of households have personal computers. If a random sample of 180 households is selected, what is the probability that fewer than 100 have a personal computer. Approximate Binomial by Normal distribution
1. A recent Survey showed that residents of City A have the longest travel times to...
1. A recent Survey showed that residents of City A have the longest travel times to get to work compared to residents of other cities in North Carolina. According to the latest statistics available, the average travel time to work for residents of City A is 22.5 minutes. a. Assume the exponential probability distribution is applicable and show the probability density function for the travel time to work for a resident of this city. b. What is the probability it...
7,8,9,10 7. Two cards are selected from a standard deck, with replacement. Find the probability that...
7,8,9,10
7. Two cards are selected from a standard deck, with replacement. Find the probability that they are both hearts. 8. Two cards are selected from a standard deck without replacement. Find the probability that they are both hearts. 9. The probability that a salmon swims successfully through a dam is 0.85 a. Find the probability that two salmon successfully swim through the dam. b. Find the probability that three salmon successfully swim through the dam A study found that...
According to a recent survey, the average earnings in a certain city were $41,500 in Educational...
According to a recent survey, the average earnings in a certain city were $41,500 in Educational Services and $77,800 in the Financial Services industry. a) Suppose the standard deviation of earnings in Educational Services for the whole of the city was $13,100 and we want the standard deviation of average eamings in our survey to be $1000. What sample size do we need to take? b) Suppose we used a sample of size 320 for our estimate of average earnings...
R. In a particular city, 82% of the residents have a desktop computer, 47% have a desktop computer and a laptop com...
R. In a particular city, 82% of the residents have a desktop computer, 47% have a desktop computer and a laptop computer, and 3% have neither a desktop laptop computer. nor a (63) The probability that a randomly selected home has (b) 0.62 laptop is (d) 0.97 (c) 0.79 (a) 0.35 (64) Given that a randomly selected home has a desktop computer, the probability that this home does not have a laptop computer is (c) 0.51 (d) 0.55 (b) 0.43...
10. (1 pt) The living space of all homes in a city has a mean of...
10. (1 pt) The living space of all homes in a city has a mean of 2100 square feet and a standard deviation of 500 square feet. Let Xbe the mean living space for a random sample of 625 homes from this city. The probability that this mean living space is less than 2069 square feet is (a).0478 (b) .9394 (c) .8788 (d).0606 (e) .5239
A recent survey was conducted of the 30largest public companies in a particular country. Of these...
A recent survey was conducted of the 30largest public companies in a particular country. Of these 30 companies,9 were banking or investment companies based in city X. A total of 21city X companies were on the top 30 list. Suppose we select one of these 30 companies at random. Given that the company is based in city X, what is the probability that it is a banking or investment company? The probability is. _______ (Round to three decimal places as...
4.25 The results of a survey home?" follow. have a asking, "Do you have a calculator...
4.25 The results of a survey home?" follow. have a asking, "Do you have a calculator and/or a computer in your Calculator Yes No Yes 46 3 49 No 11 1526 Computer 57 18 75 Is the variable "calculator" independent of the variable "computer"? Why or why not? 4.26 In a recent year, business failures in the United States numbered 83,384, according to Dun & Bradstreet. The construction industry accounted for 10,867 of these business failures. The South Atlantic states...
1. A recent Survey showed that residents of City A have the longest travel times to get to work compared to residents of other cities in North Carolina. According to the latest statistics available, the average travel time to work for residents of City A is 22.5 minutes. a. Assume the exponential probability distribution is applicable and show the probability density function for the travel time to work for a resident of this city. b. What is the probability it...
7,8,9,10
7. Two cards are selected from a standard deck, with replacement. Find the probability that they are both hearts. 8. Two cards are selected from a standard deck without replacement. Find the probability that they are both hearts. 9. The probability that a salmon swims successfully through a dam is 0.85 a. Find the probability that two salmon successfully swim through the dam. b. Find the probability that three salmon successfully swim through the dam A study found that...
According to a recent survey, the average earnings in a certain city were $41,500 in Educational Services and $77,800 in the Financial Services industry. a) Suppose the standard deviation of earnings in Educational Services for the whole of the city was $13,100 and we want the standard deviation of average eamings in our survey to be $1000. What sample size do we need to take? b) Suppose we used a sample of size 320 for our estimate of average earnings...
R. In a particular city, 82% of the residents have a desktop computer, 47% have a desktop computer and a laptop computer, and 3% have neither a desktop laptop computer. nor a (63) The probability that a randomly selected home has (b) 0.62 laptop is (d) 0.97 (c) 0.79 (a) 0.35 (64) Given that a randomly selected home has a desktop computer, the probability that this home does not have a laptop computer is (c) 0.51 (d) 0.55 (b) 0.43...
10. (1 pt) The living space of all homes in a city has a mean of 2100 square feet and a standard deviation of 500 square feet. Let Xbe the mean living space for a random sample of 625 homes from this city. The probability that this mean living space is less than 2069 square feet is (a).0478 (b) .9394 (c) .8788 (d).0606 (e) .5239
4.25 The results of a survey home?" follow. have a asking, "Do you have a calculator and/or a computer in your Calculator Yes No Yes 46 3 49 No 11 1526 Computer 57 18 75 Is the variable "calculator" independent of the variable "computer"? Why or why not? 4.26 In a recent year, business failures in the United States numbered 83,384, according to Dun & Bradstreet. The construction industry accounted for 10,867 of these business failures. The South Atlantic states...
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