In a population of 20 families, the number of cars owned by each family is given...
In a population of 20 families, the number of cars owned by each family is given below:0,2,2,3,1,1,4,2,4,5,1,3,6,1,2,4,3,2,3,3LetXbe the number of cars owned, and Xi is the possible values of X. Use this data to answer the following questions:
(a) Write down the relative-frequency distribution for X.
(b) Find the median of the number of cars owned.
(c) Find the mean of the number of cars owned.
(d) Using (b) and (c), are there more than 50% of values Xi above the mean, or less? Explain your answer. (I really want to know what is the meaning of this question?)
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In a population of 20 families, the number of cars owned by each
family is given...
4. In a population of 20 families, the number of cars owned by each family is...
4. In a population of 20 families, the number of cars owned by each family is given below: 0,2,2,3,1,1,4,2, 4,5,1,3,6,1,2,4, 3, 2,3, 3 Let X be the number of cars owned, and Xt be the possible values of X. Use this data to answer the following questions (a) Write down the relative-frequency distribution for X. (b) Find the median of number of cars owned. (c) Find the mean of number of cars owned. (d) Using (b) and (c), are there...
by cach family is given below Let X be the munber of cars owned, and X,...
by cach family is given below Let X be the munber of cars owned, and X, be the pos- sible valus of X. Use this data to answer the following questions: (a) Write down the relative-frequency distribution for X (b) Find the median of number of cars owned. (c) Find the mean of mumber of cars owned (d) Using (b) and (c), are there more than 50% of values X, above the meau, or less? Explain your answe
Let the random variable x represent the number of cars owned by a family. Assume that...
Let the random variable x represent the number of cars owned by a family. Assume that x can take on five values: 0, 1, 2, 3, 4. A partial probability distribution is shown below: x 0 1 2 3 4 p(x) 0.2 0.1 0.3 ? 0.1 i. The probability that a family owns three cars equals _______ ii. The probability that a family owns between 1 and 3 cars, inclusive, equals _______ iii. ...
A statistics group divides families into two groups, couple families and lone-parent families. Da...
A statistics group divides families into two groups, couple families and lone-parent families. Data from a recent census for a region are available below. A surveyor calls 1000 families in the region at random in order to market products of different types to the two types of family. For each of the following questions, either answer the question or state why it is not possible to answer it with the information provided and the sampling distribution. Complete parts through (f)...
In a sample of 100 families, the number of children in each family is tabulated below:...
In a sample of 100 families, the number of children in each family is tabulated below: Number of Children Frequency 1 30 2 50 3 10 4 10 Total 100 Question: For each child, find the mean number of siblings. (A sibling is a brother or a sister. E.g. each child in a 5-child family would have 4 siblings.)?
Forty randomly selected students were asked the number of pairs of sneakers they owned. Let X...
Forty randomly selected students were asked the number of pairs of sneakers they owned. Let X = the number of pairs of sneakers owned. The results are as follows. X Frequency 1 2 2 5 3 6 4 13 5 13 6 1 A. Find the sample mean x. (Round your answer to two decimal places.) B. Find the sample standard deviation, s. (Round your answer to two decimal places.) C. Complete the columns of the chart. (Round your answers...
For 20 families we have the following frequency distribution of the number of different jobs the...
For 20 families we have the following frequency distribution of the number of different jobs the primary wage earner has held during the past five years. number of jobs (0X0 frequency 0 2 8 2 3 4 Find the relative frequency for X-1 jobs.
1. Forty randomly selected students were asked the number of pairs of sneakers they owned. Let...
1. Forty randomly selected students were asked the number of pairs of sneakers they owned. Let X = the number of pairs of sneakers owned. The results are as follows. X Frequency 1 2 2 5 3 6 4 13 5 13 6 1 A. Find the sample standard deviation, s. (Round your answer to two decimal places.) answer is NOT 1.22 B. Complete the columns of the chart. (Round your answers to three decimal places.) Fill in chart for...
We know that the number of books owned by the population of Gonzaga University students follows...
We know that the number of books owned by the population of Gonzaga University students follows a normal distribution and has a mean of 32 and a standard deviation of 3.8. Show all work for full credit! Find the probability that a single randomly selected student owns more than 34 books. Find the probability that a sample of size 40 is randomly selected with a mean that is larger than 34 books.
The average age of cars owned by residents of a small city is 6 years with...
The average age of cars owned by residents of a small city is 6 years with a standard deviation of 2.2 years but the distribution is quite skewed. A simple random sample of 400 cars is to be selected, and the sample mean age x bar of these cars is to be computed. We know the random variable x bar has approximately a normal distributuion because of a. the law of large numbers b. the central limit theorem c. simpson's...
4. In a population of 20 families, the number of cars owned by each family is given below: 0,2,2,3,1,1,4,2, 4,5,1,3,6,1,2,4, 3, 2,3, 3 Let X be the number of cars owned, and Xt be the possible values of X. Use this data to answer the following questions (a) Write down the relative-frequency distribution for X. (b) Find the median of number of cars owned. (c) Find the mean of number of cars owned. (d) Using (b) and (c), are there...
by cach family is given below Let X be the munber of cars owned, and X, be the pos- sible valus of X. Use this data to answer the following questions: (a) Write down the relative-frequency distribution for X (b) Find the median of number of cars owned. (c) Find the mean of mumber of cars owned (d) Using (b) and (c), are there more than 50% of values X, above the meau, or less? Explain your answe
A statistics group divides families into two groups, couple families and lone-parent families. Data from a recent census for a region are available below. A surveyor calls 1000 families in the region at random in order to market products of different types to the two types of family. For each of the following questions, either answer the question or state why it is not possible to answer it with the information provided and the sampling distribution. Complete parts through (f)...
For 20 families we have the following frequency distribution of the number of different jobs the primary wage earner has held during the past five years. number of jobs (0X0 frequency 0 2 8 2 3 4 Find the relative frequency for X-1 jobs.
We know that the number of books owned by the population of Gonzaga University students follows a normal distribution and has a mean of 32 and a standard deviation of 3.8. Show all work for full credit! Find the probability that a single randomly selected student owns more than 34 books. Find the probability that a sample of size 40 is randomly selected with a mean that is larger than 34 books.
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