Wednesday
October 22, 2014

Homework Help: Statistics

Posted by Chinadoll on Monday, October 26, 2009 at 2:28pm.

Suppose that the probability distribution of a random variable x can be described by the formula
P(x) = x/15
For each of the values x = 1, 2, 3, 4, and 5. For examples, then, p(x=2) = p(2) = 2/15
a Write out the probability distribution of x.
b Show that the probability distribution of x satisfies the properties of a discrete probability distribution.
c Calculate the mean of x.

d Calculate the variance and standard deviation.

In each case, sketch the two specified normal curves on the same set of axes:
A normal curve with = 20 and o = 3, a normal curve with = 20 and o = 6.

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Statistics - Suppose that the probability distribution of a random variable x ...
Statistics/probability - The random variable X has a binomial distribution with ...
Statistics and Probability - A computer supply house receives a large shipment ...
statistics - A random variable may assume any value between 10 and 50 with equal...
Statistics and Probability - Suppose you took 1000 random samples of size 200 ...
Statistics and Probability - Suppose you took 1000 random samples of size 200 ...
statistics - two dices are tossed once. let the random variable be t he sum of ...
statistics - Solve the problem. Suppose a random variable x is best described by...
Statistics - A person's level of blood glucose and diabetes are closely related...
Statistics - Using formula P(x) = x/15 For each of the values x = 1, 2, 3, 4, ...

Search
Members