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In Table 4.4 the random variable X represents the number of boys in families with 4...
6. In the accompanying table, the random variable x represents the number of televisions in a...
6. In the accompanying table, the random variable x represents the number of televisions in a household in a certain country. Determine whether or not the table is a probability distribution. If it is a probability distribution, find its mean and standard deviation. x P(x) 0 0.04 1 0.11 2 0.32 3 0.25 4 0.15 5 0.13 If the table is a probability distribution, what is its mean? Select the correct choice below and fill in any answer boxes within...
The random variable (x) below represents the number of heads appearing in four tosses of a...
The random variable (x) below represents the number of heads appearing in four tosses of a fair coin: 1) 2 6/16 4 1/16 P(r) 1/16 4/16 4/16 a) Verify that the expected value of (u) of x is 2.0 (show calculations). b) Calculate the standard deviation ofx.
In the probability distribution to the right, the random variable X represents the number of marriages...
In the probability distribution to the right, the random variable X represents the number of marriages an individual aged 15 years or older has been involved in. Compute the standard deviation of the random variable X Р(x) 0.262 х 1 0.584 0.120 2 0.029 3 4 0.004 5 0.001 marriages Сх (Round to one decimal place as needed.)
please help with all. In the following probability distribution, the random variable x represents the number...
please help with all.
In the following probability distribution, the random variable x represents the number of activities a parent of a 6th-to 8th grade student is involved in. Complete parts (a) through (1) below. * 1 0 1 2 3 4 5 P(x) 0.269 0 206 0.224 0.239 0.062 (a) Verify that this is a discrete probability distribution This is a discrete probability distribution because the sum of the probabilities is and each probability is (6) Graph the discrete...
Refer to the accompanying table, which describes results from groups of 8 births from 8 different sets of parents. The random variable x represents the number of girls among 8 children. Find the mean and standard deviation for the number of girls in 8 bi
Refer to the accompanying table, which describes results from groups of 8 births from 8 different sets of parents. The random variable x represents the number of girls among 8 children. Find the mean and standard deviation for the number of girls in 8 births.The mean is μ=6.1 girl(s). (Round to one decimal place as needed.)Table of numbers of girls and probabilitiesNumber of Girls xP(x)00.00510.03320.11230.21940.26050.22260.11370.03380.003
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 ...
In the following probability distribution, the random variable x represents the number of activities a...
In the following probability distribution, the random variable x represents the number of activities a parent of a 6 th- to 8th-grade student is involved in. Complete parts (a) through (f) below.x01234P(x)0.3670.1330.2090.1160.175(a) Verify that this is a discrete probability distribution.This is a discrete probability distribution because the sum of the probabilities is _______ and each probability is _______ (b) Graph the discrete probability distribution. Choose the correct graph below.(c) Compute and interpret the mean of the random variable x .The mean...
Refer to the accompanying table, which describes results from groups of 8 births from 8 different sets of parents. The random variable x represents the number of girls among 8 children. Find the mean and standard deviation for the number of girls in 8 bi
Refer to the accompanying table, which describes results from groups of 8 births from 8 different sets of parents. The random variable x represents the number of girls among 8 children. Find the mean and standard deviation for the number of girls in 8 births.chart is
Therandom variable x represent the number of boys in a family of threechildren. Assuming...
The random variable x represent the number of boys in a family of three children. Assuming that boys are equally likely, find the mean and standard deviations for the random variable x.xFrequency,fP(x)x*P(x)x-μ(x-μ)2(x-μ)2*P(x)TotalN=sum fNote: *= multiplication
The table holds the probability distribution for the variable X, which represents the number of traffic...
The table holds the probability distribution for the variable X, which represents the number of traffic accidents in a small town (daily) Number of Accidents Per Day (X) Probability of X, P(X) 0 .21 1 .27 2 .23 3 .12 4 .08 5 .05 6 .04 a. Calculate the probability of observing at least 1 accident per day, Pr(X ≥ 1). b. Calculate the probability of observing 7 accidents per day, Pr(X = 7). c. Calculate the expected number of...
The random variable (x) below represents the number of heads appearing in four tosses of a fair coin: 1) 2 6/16 4 1/16 P(r) 1/16 4/16 4/16 a) Verify that the expected value of (u) of x is 2.0 (show calculations). b) Calculate the standard deviation ofx.
In the probability distribution to the right, the random variable X represents the number of marriages an individual aged 15 years or older has been involved in. Compute the standard deviation of the random variable X Р(x) 0.262 х 1 0.584 0.120 2 0.029 3 4 0.004 5 0.001 marriages Сх (Round to one decimal place as needed.)
please help with all.
In the following probability distribution, the random variable x represents the number of activities a parent of a 6th-to 8th grade student is involved in. Complete parts (a) through (1) below. * 1 0 1 2 3 4 5 P(x) 0.269 0 206 0.224 0.239 0.062 (a) Verify that this is a discrete probability distribution This is a discrete probability distribution because the sum of the probabilities is and each probability is (6) Graph the discrete...
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