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The random variable z is the standard normal score.find the p -aza equals 0.6600?
Wiki User
โ 10y ago
Unfortunately, limitations of the browser used by Answers.com means that we cannot see most symbols. It is therefore difficult to be sure of giving a proper answer to your question.
Assuming the question was to find a such that Prob(-a < z < a) = 0.6600, the answer is a = 0.954
If the question was something else, please resubmit your question spelling out the symbols as "plus", "minus", "times", "equals".
Wiki User
โ 10y ago
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What is a normal random variable minus its mean and divided by its standard deviation?
It is the Standard normal variable.
What is the probability that a standard normal variable z is positive is?
It is 0.5
What is The normal probability distribution with ยต equals 0 and ฯ equals 1?
It is the Standard Normal distribution.
What is the formula to convert normal distribution to the standard normal distribution?
If a variable X, is distributed Normally with mean m and standard deviation s thenZ = (X - m)/s has a standard normal distribution.
Are all variables that are approximentaly normally distributed be transformed to standard normal variables?
Yes, to approximately standard normal.If the random variable X is approximately normal with mean m and standard deviation s, then(X - m)/sis approximately standard normal.
What is a normal random variable minus its mean and divided by its standard deviation?
It is the Standard normal variable.
The random variable Z is the standard normal score. Find the number a if P Za equals 0.9830?
a = ±2.12, depending on the inequality for Z.
What is the probability that a standard normal variable z is positive is?
It is 0.5
What is The normal probability distribution with ยต equals 0 and ฯ equals 1?
It is the Standard Normal distribution.
What role do z-scores play in the transformation of data from multiple distributions to the standard normal distribution?
None.z-scores are linear transformations that are used to convert an "ordinary" Normal variable - with mean, m, and standard deviation, s, to a normal variable with mean = 0 and st dev = 1 : the Standard Normal distribution.
What is the formula to convert normal distribution to the standard normal distribution?
If a variable X, is distributed Normally with mean m and standard deviation s thenZ = (X - m)/s has a standard normal distribution.
What is standarizing variable?
An ordinary variable is standardised by taking a linear transformation of it such that the new variable has standard properties. For example, if X is a Gaussian (Normal) variable with mean mu and standard deviation sigma, then Z = (X - mu)/sigma has a Normal distribution with mean 0 and SD = 1: it has been standardised.
What is the area between z equals 0 and z equals 2.24?
The question does not specify what z is but this answer will assume that it is the value of a random variable with a Standard Normal distribution. That being the case, the area under the curve between those values is 0.4875.
What is the probability that a standard normal variable will be between the values of -2 and 1?
0.636 approx.
What is the probability that z (the standard normal distribution variable) is greater than 1?
It is 0.1587
Are all variables that are approximentaly normally distributed be transformed to standard normal variables?
Yes, to approximately standard normal.If the random variable X is approximately normal with mean m and standard deviation s, then(X - m)/sis approximately standard normal.
What is the area under standard normal distribution curve between z equals 0 and z equals 2.16?
0.4846
