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A survey recorded the number of children 18 years old or younger who lived in 100 households. The accompanying table sh...
On average, Americans have lived in 3 places by the time they are 18 years old....
On average, Americans have lived in 3 places by the time they are 18 years old. Is this average more for college students? The 44 randomly selected college students who answered the survey question had lived an average of 3.15 places by the time they were 18 years old. The standard deviation for the survey group was 0.9. What can be concluded at the a = 0.01 level of significance? a. For this study, we should use Select an answer...
The accompanying data represent the ideal number of children for a random sample of 900 adults....
The accompanying data represent the ideal number of children for a random sample of 900 adults. Complete parts (a) through (d) Data: X(# of children) Frequency 0 9 1 31 2 532 3 242 4 67 5 17 6 2 A.) Construct a discrete probability distribution for the random variable x. (Round to three decimal places as needed). B.) Draw a graph of the probability distribution. C.) Compute and interpret the mean of the random variable X. The mean is...
On average, Americans have lived in 3 places by the time they are 18 years old....
On average, Americans have lived in 3 places by the time they are 18 years old. Is this average less for college students? The 69 randomly selected college students who answered the survey question had lived in an average of 2.83 places by the time they were 18 years old. The standard deviation for the survey group was 1. What can be concluded at the α = 0.10 level of significance? A) For this study, we should use (Z-Test for...
A school admisnistrator surveyed 57 households in her district to find the number of children under...
A school admisnistrator surveyed 57 households in her district to find the number of children under age 4. She found that 15 households had no such children, 28 had one, 10 had two, and 4 had three. Find the mean number of children under age 4 per household. Show your calculation as well as the answer rounded to three decimal places
The table below shows the number of children in families at a church in Milwaukee. Number...
The table below shows the number of children in families at a church in Milwaukee. Number of Children Frequency 5 7 2 10 2 The standard deviation for children in a family is: (Round to two decimal places.)
According to a survey of 25,000 households. 49% of the people watching a special event on...
According to a survey of 25,000 households. 49% of the people watching a special event on TV enoyed the commercials more than the event tsell. Complete parts a through e below based on a random sample of nine people who watched the special event a. What is the probability that exactly three people enjoyed the commercials more than the event? The probability is (Round to four decimal places as needed) b. What is the probability that less than four people...
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...
Refer to the accompanying table, which describes the number of adults in groups of five who...
Refer to the accompanying table, which describes the number of adults in groups of five who reported sleepwalking Find the mean and standard deviation for the numbers of sleepwalkers in groups of five Chck the icon to view the datatable The mean is skoopwalkerts) (Round to one decimal place as needed The standard deviation is sewakeris) (Round to one decimal place as needed) Table of numbers of sleepwalkers and probabilities X PE 0170 0.367 0311 0119 0.025 0005 Print Done
1. The mean lifetime of laptop computers produced by one company is 4.6 years with a...
1. The mean lifetime of laptop computers produced by one company is 4.6 years with a standard deviation of 1.1 years. Consider random samples of 55 laptop computers repeatedly taken for 2 weeks. What is the standard deviation of the sampling distribution of the sample means? (If rounding is needed, round to four decimal places). 2 . Suppose that for 18-to-25-year-old men, the mean number of football games watched each football season is 19.0 games with a standard deviation of...
Ideal Number of Frequency Children 27 521 263 67 10 This past year, an organizaton conducted a survey and asked, "What do you think is the ideal number of chidren for a family to have?" The r...
Ideal Number of Frequency Children 27 521 263 67 10 This past year, an organizaton conducted a survey and asked, "What do you think is the ideal number of chidren for a family to have?" The results of the survey are shown in the table. Complete parts (a) through (e) l Click the ican to view the data table (a) Consruct a relative frequency histogram for the ideal number of chldren. Choose the correct graph below. O A O B...
On average, Americans have lived in 3 places by the time they are 18 years old. Is this average more for college students? The 44 randomly selected college students who answered the survey question had lived an average of 3.15 places by the time they were 18 years old. The standard deviation for the survey group was 0.9. What can be concluded at the a = 0.01 level of significance? a. For this study, we should use Select an answer...
A school admisnistrator surveyed 57 households in her district to find the number of children under age 4. She found that 15 households had no such children, 28 had one, 10 had two, and 4 had three. Find the mean number of children under age 4 per household. Show your calculation as well as the answer rounded to three decimal places
The table below shows the number of children in families at a church in Milwaukee. Number of Children Frequency 5 7 2 10 2 The standard deviation for children in a family is: (Round to two decimal places.)
According to a survey of 25,000 households. 49% of the people watching a special event on TV enoyed the commercials more than the event tsell. Complete parts a through e below based on a random sample of nine people who watched the special event a. What is the probability that exactly three people enjoyed the commercials more than the event? The probability is (Round to four decimal places as needed) b. What is the probability that less than four people...
Refer to the accompanying table, which describes the number of adults in groups of five who reported sleepwalking Find the mean and standard deviation for the numbers of sleepwalkers in groups of five Chck the icon to view the datatable The mean is skoopwalkerts) (Round to one decimal place as needed The standard deviation is sewakeris) (Round to one decimal place as needed) Table of numbers of sleepwalkers and probabilities X PE 0170 0.367 0311 0119 0.025 0005 Print Done
Ideal Number of Frequency Children 27 521 263 67 10 This past year, an organizaton conducted a survey and asked, "What do you think is the ideal number of chidren for a family to have?" The results of the survey are shown in the table. Complete parts (a) through (e) l Click the ican to view the data table (a) Consruct a relative frequency histogram for the ideal number of chldren. Choose the correct graph below. O A O B...
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