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1. Let X be the number of homes sold per week by a group of realtors....
12 pts Question 4 The National Association of Realtors reports that 30% of homes purchased in...
12 pts Question 4 The National Association of Realtors reports that 30% of homes purchased in 2017 were investment or vacation properties (http://economistsoutlook.blogs.realtor.org/2017). Describe the sampling distribution of p for samples of size 42 by completing the following statements. Select] 1. The mean of the sampling distribution of p is Hj - Select il. The standard deviation of the sampling distribution of piso = since [Select] ill. The shape of the sampling distribution of pis (Select]
The number of suits sold per day at a retail store is shown in the table,...
The number of suits sold per day at a retail store is shown in the table, with the corresponding probabilities. PLEASE FIND MEAN, VARIANCE, AND STANDARD DEVIATION Number of suits sold X2021222324Probability P(X)0.10.20.30.1 0.3
Question stion 13 9 pointsSave An of shopping trips made during a given week by a...
Question stion 13 9 pointsSave An of shopping trips made during a given week by a randomly selected family from a city. Thefollowing table ists the probability distribution ofx. POO .08 24 18 .14 04 Calculate the mean and the standard deviation of X.
Suppose the number of patients per week that visit a health center follows a Poisson distribution...
Suppose the number of patients per week that visit a health center follows a Poisson distribution with a rate of 300 patients per week. Let the random variable X count the number of patients per week that visit the health center. A) State the distribution of the random variable defined above B) Compute the probability that during a randomly selected week exactly 280 patients visit the health care center C) Compute the probability that during a randomly selected week at...
8. Let the random variable x represent the number of girls in a family with three...
8. Let the random variable x represent the number of girls in a family with three children. Assume the probability of a child being a girl is 0.35 The table on the right describes the probability of having x number of girls. Determine whether the table describes a probability distribution. If it does, find the mean and standard deviation. Is it unusual for a family of three children to consist of three girls? x P(x) 0 0.275 1 0.444 2 ...
Use for questions 5-8: The number of days a group of 250 homes is on the market is normally distr...
i need help surh this section 5-8
Use for questions 5-8: The number of days a group of 250 homes is on the market is normally distributed with a mean 50 and a standard deviation of 13. Label the normal distribution curve, ther answer the questions. 5. What percent of the homes are on the market between 11 and 89 days? 6. What is the probability that a home is on the market for at least 37 days? 6. 7....
A lab has six computers. Let X denote the number of those computers that are in...
A lab has six computers. Let X denote the number of those computers that are in use at a particular time of day. Suppose that the probability distribution of X is given in the following table 0 f(x) = P(X=x) 0.05 F(x) = P(XSX) 1 0.1 2 0.15 3 0.25 14 10.2 0.2 S6 5 K 0.1 1. Find k. 2. Find the probability that at least 3 computers are in use. 3. Find the probability that between 2 and...
On an average a photocopier breaks down 1.3 times per week. Let X be the number...
On an average a photocopier breaks down 1.3 times per week. Let X be the number of times it will break down next week. Assume that weather the copier breaks down again is independent of previous breakdowns, and that the number of breakdowns in a given length of time is proportional to the length of time. Find a)the probability of 2 breakdowns next week b) the expected number of breakdowns next week c) the variance and standard deviation of the...
Assume that the number of hours college students spend working per week is normally distributed with...
Assume that the number of hours college students spend working
per week is normally distributed with a mean of 18 hours and
standard deviation of 4 hours
2. Assume that the number of hours that college students spend working per week is normally distributed with a mean of 18 hours and a standard deviation of 4 hours. a. Mark the 7 hash marks on the x-axis with the appropriate labels in hours worked per week. Recall that the center hash...
1. The number of hours per week that 200 college students spend on the Internet is...
1. The number of hours per week that 200 college students spend on the Internet is grouped into classes (0 − 3),(4 − 7),(8 − 11),(12 − 15),(16 − 19),(20 − 23),(24 − 27) with observed frequencies of 12, 25, 36, 45, 34, 31, and 17. The grouped mean and standard deviation are found from the data. The null hypothesis is that the data is normally distributed. Using the mean and standard deviation, the expected frequencies are found to be...
12 pts Question 4 The National Association of Realtors reports that 30% of homes purchased in 2017 were investment or vacation properties (http://economistsoutlook.blogs.realtor.org/2017). Describe the sampling distribution of p for samples of size 42 by completing the following statements. Select] 1. The mean of the sampling distribution of p is Hj - Select il. The standard deviation of the sampling distribution of piso = since [Select] ill. The shape of the sampling distribution of pis (Select]
Question stion 13 9 pointsSave An of shopping trips made during a given week by a randomly selected family from a city. Thefollowing table ists the probability distribution ofx. POO .08 24 18 .14 04 Calculate the mean and the standard deviation of X.
i need help surh this section 5-8
Use for questions 5-8: The number of days a group of 250 homes is on the market is normally distributed with a mean 50 and a standard deviation of 13. Label the normal distribution curve, ther answer the questions. 5. What percent of the homes are on the market between 11 and 89 days? 6. What is the probability that a home is on the market for at least 37 days? 6. 7....
A lab has six computers. Let X denote the number of those computers that are in use at a particular time of day. Suppose that the probability distribution of X is given in the following table 0 f(x) = P(X=x) 0.05 F(x) = P(XSX) 1 0.1 2 0.15 3 0.25 14 10.2 0.2 S6 5 K 0.1 1. Find k. 2. Find the probability that at least 3 computers are in use. 3. Find the probability that between 2 and...
Assume that the number of hours college students spend working
per week is normally distributed with a mean of 18 hours and
standard deviation of 4 hours
2. Assume that the number of hours that college students spend working per week is normally distributed with a mean of 18 hours and a standard deviation of 4 hours. a. Mark the 7 hash marks on the x-axis with the appropriate labels in hours worked per week. Recall that the center hash...
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