The standard deviation of the number of people in families per households is? An agency collects...
The standard deviation of the number of people in families per households is?
An agency collects demographics concerning the number of people in families per household in a certain country. Assume the distribution of the number of people per household is as shown in the table to the right.
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The standard deviation of the number of people in families per
households is?
An agency collects...
An agency collects demographics concerning the number of people in families per household in a certain...
An agency collects demographics concerning the number of people in families per household in a certain country. Assume the distribution of the number of people per household is as shown in the table to the right. x P(x) 2 0.27 3 0.23 4 0.28 5 0.13 6 0.05 7 0.04 a. Calculate the expected number of people in families per household in the country. b. Compute the standard deviation of the number of people in families per household.
An agency collects demographics concerning the number of people in families per household in a certain...
An agency collects demographics concerning the number of people in families per household in a certain country. Assume the distribution of the number of people per household is as shown in the table below. x P(x) 2 0.26 3 0.24 4 0.34 5 0.11 6 0.03 7 0.02 a. The expected number of people in families per household is ______ (Type the entire number, do not round.) b. The standard deviation of the number of people in families per household...
An agency collects demographics concerning the number of people in families per household in a certain...
An agency collects demographics concerning the number of people in families per household in a certain country. Assume the distribution of the number of people per household is as shown in the table to the right. a. Calculate the expected number of people in families per household in the country. b. Compute the standard deviation of the number of people in families per household. x P(x) 2 0.25 3 0.24 4 0.31 5 0.12 6 0.05 7 0.03...
The U.S. Census Bureau collects demographics concerning the number of people in families per household. Assume...
The U.S. Census Bureau collects demographics concerning the number of people in families per household. Assume the distribution of the number of people per household is shown in the following table: ________________ x P(x) _______________ 2 0.27 3 0.25 4 0.28 5 0.13 6 0.04 7 0.03 a) Calculate the expected number o f people in families per household in the United States. b) Compute the variance and standard deviation of the number of people in families per household.
Classify the following as either a discrete random variable or a continuous random variable. (a) The airspeed of an unla...
Classify the following as either a discrete random variable or a continuous random variable. (a) The airspeed of an unladen swallow. (b) The number of rodents of unusual size that Buttercup and Westley battle each time they cross through the swamp. (c) The time it takes for Bob Ross to complete a painting. (d) The number of push-ups the Clemson Tiger mascot does during a football game. (e) The amount of Gatorade (in ounces) NFL players consume during a game....
The number of persons living per household in a city was collected and were summarized. The...
The number of persons living per household in a city was collected and were summarized. The frequency table is given below: # people # households (millions 1 23 45 6 7 | 3.1 | 4.5 | 3.8 | 2.5 | 2.4 | 2.5 | 1.2 Define X as the number of people per household. (a) Write down the probability distribution of X. (b) Find P[X2 4] (c) Find P[2 S X< 4] (d) Find the mean, variance and standard deviation...
A survey recorded the number of children 18 years old or younger who lived in 100 households. The accompanying table sh...
A survey recorded the number of children 18 years old or younger who lived in 100 households. The accompanying table shows the results. Number of Children Number of Families a. Determine the mean number of children per household. b. Determine the standard deviation for the number of children per household. O-NM a. The mean number of children per household is 1.190 (Round to three decimal places as needed.) b. The standard deviation for the number of children per household is...
9. A probability distribution is shown to the right. By hand, find the mean and standard...
9. A probability distribution is shown to the right. By hand, find the mean and standard deviation for the random variable, x, where x represents the number of bicycles per household in a town of 1000 households. (Use the easier formula for standard deviation!) x P(x) 0 0.125 1 0.428 2 0.256 3 0.108 4 0.083 Mean :___________ Standard Deviation :___________
A frequency distribution is shown below. Complete parts (a) through (e) The number of dogs per...
A frequency distribution is shown below. Complete parts (a) through (e) The number of dogs per household in a small towr Dogs Households 1427 42 5 26 11 164 41 (a) Use the frequency distribution to construct a probability distribution. P(x) Round to the nearest thousandth as needed.) (b) Find the mean of the probability distribution. (Round to the nearest tenth as needed.) (c) Find the variance of the probability distribution. ?2-O (Round to the nearest tenth as needed.) (d)...
Question 2 Based on the 1988 National Survey of Families and Households, it was re- ported that men spent a mean of 18.1 hours per week doing housework. Suppose the standard deviation was 13.1 hours...
Question 2 Based on the 1988 National Survey of Families and Households, it was re- ported that men spent a mean of 18.1 hours per week doing housework. Suppose the standard deviation was 13.1 hours a normal distribution, sketch the approximat a Assuming e distribution of the number of hours that a randomly selected man spent doing housework in 1988 b Based on the graph in part (a), explain why the population distribution is very unlikely to be normal and...
The number of persons living per household in a city was collected and were summarized. The frequency table is given below: # people # households (millions 1 23 45 6 7 | 3.1 | 4.5 | 3.8 | 2.5 | 2.4 | 2.5 | 1.2 Define X as the number of people per household. (a) Write down the probability distribution of X. (b) Find P[X2 4] (c) Find P[2 S X< 4] (d) Find the mean, variance and standard deviation...
A survey recorded the number of children 18 years old or younger who lived in 100 households. The accompanying table shows the results. Number of Children Number of Families a. Determine the mean number of children per household. b. Determine the standard deviation for the number of children per household. O-NM a. The mean number of children per household is 1.190 (Round to three decimal places as needed.) b. The standard deviation for the number of children per household is...
A frequency distribution is shown below. Complete parts (a) through (e) The number of dogs per household in a small towr Dogs Households 1427 42 5 26 11 164 41 (a) Use the frequency distribution to construct a probability distribution. P(x) Round to the nearest thousandth as needed.) (b) Find the mean of the probability distribution. (Round to the nearest tenth as needed.) (c) Find the variance of the probability distribution. ?2-O (Round to the nearest tenth as needed.) (d)...
Question 2 Based on the 1988 National Survey of Families and Households, it was re- ported that men spent a mean of 18.1 hours per week doing housework. Suppose the standard deviation was 13.1 hours a normal distribution, sketch the approximat a Assuming e distribution of the number of hours that a randomly selected man spent doing housework in 1988 b Based on the graph in part (a), explain why the population distribution is very unlikely to be normal and...
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