Question

1. Groups of adults are randomly selected and arranged in groups of three. The random variable x is the number in the group who say that they would feel comfortable in a self-driving vehicle. Determine whether a probability distribution is given. If a probability distribution is given, find its mean and standard deviation. If a probability distribution is not given, identify the requirements that are not satisfied. |

x P(x)

0 0.355

1 0.434

2 0.187

3 0.024

a.) Does the table show a probability distribution? Select all that apply.

A. Yes, the table shows a probability distribution.

B. No, the sum of all the probabilities is not equal to 1.

C.No, not every probability is between 0 and 1 inclusive.

D. No, the random variable x's number values are not associated with probabilities.

E.No, the random variable x is categorical instead of numerical

b.) Find the mean of random variable x.

c.) Find the standard deviation of random variable x.

Answer #1

Groups of adults are randomly selected and arranged in groups of
three. The random variable x is the number in the group who say
that they would feel comfortable in a self-driving vehicle.
Determine whether a probability distribution is given. If a
probability distribution is given, find its mean and standard
deviation. If a probability distribution is not given, identify
the requirements that are not satisfied
x
P(x)
0
0.351
1
0.427
2
0.200
3
0.022
Does the table...

Groups of adults are randomly selected and arranged in groups of
three. The random variable x is the number in the group who say
that they would feel comfortable in a self-driving vehicle.
Determine whether a probability distribution is given. If a
probability distribution is given, find its mean and standard
deviation. If a probability distribution is not given, identify
the requirements that are not satisfied.
x P(x)
0 0.352
1 0.445
2 0.179
3 0.024
Does the table show...

A sociologist randomly selects single adults for different
groups of three, and the random variable x is the number in the
group who say that the most fun way to flirt is in person.
Determine whether a probability distribution is given. If a
probability distribution is given, find its mean and standard
deviation. If a probability distribution is not given, identify
the requirements that are not satisfied.
x
P(x)
0
0.0940.094
1
0.3370.337
2
0.4030.403
3
0.1660.166
Does the table...

When conducting research on color blindness in males, a
researcher forms random groups with five males in each group. The
random variable x is the number of males in the group who have a
form of color blindness. Determine whether a probability
distribution is given. If a probability distribution is given,
find its mean and standard deviation. If a probability distribution
is not given, identify the requirements that are not
satisfied.
x P(x) 0 0.662
1: 0.282
2: 0.052
3:...

When conducting research on color blindness in males, a
researcher forms random groups with five males in each group. The
random variable x is the number of males in the group who have a
form of color blindness. Determine whether a probability
distribution is given. If a probability distribution is given,
find its mean and standard deviation. If a probability distribution
is not given, identify the requirements that are not
satisfied.
X |P(x)
0 | 0.662
1 | 0.286
2...

Five males with an X-linked genetic disorder have one child
each. The random variable x is the number of children among the
five who inherit the X-linked genetic disorder. Determine whether
a probability distribution is given. If a probability distribution
is given, find its mean and standard deviation. If a probability
distribution is not given, identify the requirements that are not
satisfied.
x
P(x)
0
0.035
1
0.157
2
0.308
3
0.308
4
0.157
5
0.035
Does the table show...

Five males with an X-linked genetic disorder have one child
each. The random variable x is the number of children among the
five who inherit the X-linked genetic disorder. Determine whether
a probability distribution is given. If a probability distribution
is given, find its mean and standard deviation. If a probability
distribution is not given, identify the requirements that are not
satisfied.
x P(x)
0 0.028
1 0.153
2 0.319
3 0.319
4 0.153
5 0.028
Does the table show...

Five males with an X-linked genetic disorder have one child
each. The random variable x is the number of children among the
five who inherit the X-linked genetic disorder. Determine whether
a probability distribution is given. If a probability distribution
is given, find its mean and standard deviation. If a probability
distribution is not given, identify the requirements that are not
satisfied.
x
P(x)
0
0.0290.029
1
0.1490.149
2
0.3220.322
3
0.3220.322
4
0.1490.149
5
0.0290.029
Does the table show...

1. Use the given values of n and p to find the minimum usual
value
muμminus−2sigmaσ
and the maximum usual value
muμplus+2sigmaσ.
Round to the nearest hundredth unless otherwise noted.
nequals=10141014;
pequals=0.860.86
Five males with an X-linked genetic disorder have one child
each. The random variable x is the number of children among the
five who inherit the X-linked genetic disorder. Determine whether
a probability distribution is given. If a probability distribution
is given, find its mean and standard deviation....

A sociologist randomly selects single adults for different
groups of four, and the random variable x is the number of adults
in the group who say that the most fun way to flirt is in person.
(Based on a Messaging Survey)
x
p(x)
0
0.092
1
0.159
2
0.357
3
0.320
4
0.072
Answer the following questions and make sure you apply the
round-off rule and units correctly:
(a) Does the table describe a probability distribution? Why yes
or why...

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