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1. According to the Economics and Statistics Administration, 76.7 % of U.S. households owned a computer...
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...
1. According to the U.S. Department of Commerce, 30% of Arkansas households had a computer in...
1. According to the U.S. Department of Commerce, 30% of Arkansas households had a computer in 2002. If 285 Arkansas households are selected at random, find the following probabilities: (Please show all necessary justifications.) a.The exact probability that 70 or fewer have a computer b. The probability that 70 or fewer have a computer using the normal approximation. c. The probability that 70 or fewer have a computer using the normal approximation with the continuity correction. 2. The probability that a...
According to a certain study, of all the households in a city that owned at least...
According to a certain study, of all the households in a city that owned at least one laptop computer, 85% has two or more laptop computers. An internet provider planning to promote a new internet service package found that out of the 400 randomly selected households visited, 310 had two or more laptop computers. At the 0.05 level of significance, is there sufficient evidence to conclude that the proportion is less than what was reported? Express numerical answers in two...
According to the Federal Communications Commission, 70% of all U.S. households have cable television. Erica selects...
According to the Federal Communications Commission, 70% of all U.S. households have cable television. Erica selects a random sample of 1,000 households in Dupage Country, what is the probability of obtaining a random sample of at least 734 households with cable from a sample size 1,000?
1. (17 points) In a pet friendly vicinity area 65.43% of households have at least one...
1. (17 points) In a pet friendly vicinity area 65.43% of households have at least one pet. In this vicinity, 51.51% of households are in the suburbs. 69.75% of these suburban households have at least one pet. a) (3 points) Let A denote the event that a household from this vicinity has at least one pet. Let B denote the event that a household from this vicinity is in the suburbs. Collect and organize into proper probability notation all of...
According to the Federal Communications Commission, 70% of all U.S. households have vcrs. In a random...
According to the Federal Communications Commission, 70% of all U.S. households have vcrs. In a random sample of 15 households, what is the probability that the number of households with vcrs is between 10 and 12, inclusive? A) 0.2061 B) 0.4053 C) 0.5948 D) 0.7329
Three randomly selected households are surveyed. The numbers of people in the households are 44, 55,...
Three randomly selected households are surveyed. The numbers of
people in the households are
44,
55,
and
99.
Assume that samples of size
nequals=2
are randomly selected with replacement from the population
of
44,
55,
and
99.
Listed below are the nine different samples. Complete parts (a)
through (c).
a) find the variance of each of the nine samples, then summarize
the sampling distribution of the variances in a table representing
the probability distribution of the sample variances.
b) how...
Due Thursday Respond to the following in a minimum of 175 words: lected U.S. households ce...
Due Thursday Respond to the following in a minimum of 175 words: lected U.S. households ce last year, exceeds.60. Assurer le proportion of all U.S. households class Suppose that we wish to assess whether more than 60 percent of all U.S. households in a particular income class bought life insurance last year. That is, we wish to assess whether p, the proportion of all U.S. households in the income class that bought life insurance last year, exceeds.60. Assume that an...
1. According to the U.S. Energy Information Administration (www.eia.gov) the United States consumed 4.151 trillion kWh...
1. According to the U.S. Energy Information Administration (www.eia.gov) the United States consumed 4.151 trillion kWh (kilowatt-hours) of electric energy in 2010. Write this number in correct scientific notation in terms of kWh. 4.151 X 10^12 2. Of this electric energy, 260.2 billion kWh were produced by hydroelectric sources (think water over dams – like Snoqualmie Falls) in 2010. a) Write this number in correct scientific notation in terms of kWh. 2.602 x 10^11 b) What percent of the total...
n at least According to th Humane Society of the United States, there are approximately 77.5...
n at least According to th Humane Society of the United States, there are approximately 77.5 million o ned dogs in the United States, and approximately 40% of all US households o one d09-t Suppose that the 40% figure is correct and that 15 households are randomly selected for a pet ownership survey. (a) What is the probablity that exactly eight of the households have at least one dog? (Round your answer to three decimal places.) (b) What is the...
1. (17 points) In a pet friendly vicinity area 65.43% of households have at least one pet. In this vicinity, 51.51% of households are in the suburbs. 69.75% of these suburban households have at least one pet. a) (3 points) Let A denote the event that a household from this vicinity has at least one pet. Let B denote the event that a household from this vicinity is in the suburbs. Collect and organize into proper probability notation all of...
Three randomly selected households are surveyed. The numbers of
people in the households are
44,
55,
and
99.
Assume that samples of size
nequals=2
are randomly selected with replacement from the population
of
44,
55,
and
99.
Listed below are the nine different samples. Complete parts (a)
through (c).
a) find the variance of each of the nine samples, then summarize
the sampling distribution of the variances in a table representing
the probability distribution of the sample variances.
b) how...
Due Thursday Respond to the following in a minimum of 175 words: lected U.S. households ce last year, exceeds.60. Assurer le proportion of all U.S. households class Suppose that we wish to assess whether more than 60 percent of all U.S. households in a particular income class bought life insurance last year. That is, we wish to assess whether p, the proportion of all U.S. households in the income class that bought life insurance last year, exceeds.60. Assume that an...
n at least According to th Humane Society of the United States, there are approximately 77.5 million o ned dogs in the United States, and approximately 40% of all US households o one d09-t Suppose that the 40% figure is correct and that 15 households are randomly selected for a pet ownership survey. (a) What is the probablity that exactly eight of the households have at least one dog? (Round your answer to three decimal places.) (b) What is the...
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