Q: If X is a normal random variable with standard deviation 4.00 and if the probability that X is more than 5.52 is .1271 then what is the mean of X?

Write your answer...

Submit

Still have questions?

Continue Learning about Statistics

Approx 0.0027

30 percent.

a mean of 1 and any standard deviation

probability is 43.3%

a is true.

Related questions

It is the Standard normal variable.

with mean of and standard deviation of 1.

Approx 0.0027

with mean and standard deviation . Once standardized, , the test statistic follows Standard Normal Probability Distribution.

30 percent.

3

a mean of 1 and any standard deviation

It is 0.5

I have included two links. A normal random variable is a random variable whose associated probability distribution is the normal probability distribution. By definition, a random variable has to have an associated distribution. The normal distribution (probability density function) is defined by a mathematical formula with a mean and standard deviation as parameters. The normal distribution is ofter called a bell-shaped curve, because of its symmetrical shape. It is not the only symmetrical distribution. The two links should provide more information beyond this simple definition.

probability is 43.3%

a is true.

The standard deviation in a standard normal distribution is 1.