Friday

September 19, 2014

September 19, 2014

Posted by **luke** on Thursday, April 25, 2013 at 3:28pm.

Compute P(X < 39)

Compute P(X < 29 or X > 41)

Compute P(X > 30)

Find the 42nd percentile for this distribution.

- statistics -
**PsyDAG**, Friday, April 26, 2013 at 2:51pmZ = (score-mean)/SD

Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportions/probabilities related to the Z scores.

*Either-or*probabilities are found by adding the individual probabilities.

For last Q, Start with table (.42) and insert Z score into above equation.

- statistics -
**luke**, Friday, April 26, 2013 at 9:30pmPsyDAG, right on thanks

**Answer this Question**

**Related Questions**

statistics - All deal with a random variable X that follows a normal probability...

Math - Suppose a baseball player had 211 hits in a season. In the given ...

probability - A random experiment of tossing a die twice is performed. Random ...

Statistics - Suppose that the probability distribution of a random variable x ...

Statistics - A shoe store knows that the purchase amount by its customers is a ...

statistics - A popular retail store knows that the purchase amounts by its ...

Statistics - Suppose that the probability distribution of a random variable x ...

math - let the random variable x denote the number of girls in a five-child ...

statistics - Suppose that a random variable, X, follows a Normal distribution. ...

statistics - Suppose that a random variable, X, follows a Normal distribution. ...