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.

0.086




1 
0.332




2 
0.428




3  0.154 
The probabilities are given in the above table as p(x)
0.086, 0.332, 0.428, 0.154
Condition for probability distribution.
∑p(x) =1
So,
0.086+0.332+0.428+0.154=1
Thus the given table shows probability distribution.
Q: Answer true or false to the following statements and explain your answers. a. In a multiple linear r...
A: (a)Justification:In order to get a proper regression equation for a data set, an influential observa...
Q: In each of Exercises, we have presented a confidence interval (CI) for the difference, µ1  µ2, betw...
A: It is given that the 90% confidence interval is 5 to 10.
Q: about 7% of the population of a large country is nervous around strangers. If two people are randoml...
A: The probability that both are nervous around strangers is,
Q: Two types of incorrect decisions can be made in a hypothesis test: a Type I error and a Type II erro...
A: a)The meaning of two errors:Type I error:Reject the null hypothesis, when the null hypothesis is act...
Q: In the Aloha State, you are very unlikely to be murdered! However, it is considerably more likely th...
A: Click to see the answer
Q: Answer true or false to the following statements and explain your answers. a. In multiple linear reg...
A: (a)Justification:The width of the confidence interval of the conditional mean of the response variab...
Q: Suppose that independent simple random samples are taken from two populations to compare their means...
A: a).If the two distributions of the population are not normal, having same shape, then Mann Whitney t...
Q: Replacement Why does the bootstrap method require sampling with replacement? What would happen if we...
A: For a simple random sample with size n, a bootstrap sample is another random sample of n values obta...
Q: In yor sock drawer, you have 4 blue, 5 gray, and 3 black socks. Half asleep morning you grab two soc...
A: We are authorized to answer three subparts at a time, since you have not mentioned which part you ar...