Purchase Solution

Random variable for the standard normal score

Not what you're looking for?

Ask Custom Question

If the random variable z is the standard normal score, which of the following probabilities could easily be determined without referring to a table?

A. P(z > 2.86)
B. P(z < 0)
C. P(z < - 1.82)
D. P(z> -0/5)

Purchase this Solution
Solution Summary

Easily determined probabilities are found.

Purchase this Solution
Free BrainMass Quizzes
Graphs and Functions

This quiz helps you easily identify a function and test your understanding of ranges, domains , function inverses and transformations.

Geometry - Real Life Application Problems

Understanding of how geometry applies to in real-world contexts

Multiplying Complex Numbers

This is a short quiz to check your understanding of multiplication of complex numbers in rectangular form.

Exponential Expressions

In this quiz, you will have a chance to practice basic terminology of exponential expressions and how to evaluate them.

Know Your Linear Equations

Each question is a choice-summary multiple choice question that will present you with a linear equation and then make 4 statements about that equation. You must determine which of the 4 statements are true (if any) in regards to the equation.

View More Free Quizzes
Related BrainMass Solutions

  • Z-score question

    138729 Z-Score Question The standard normal table shows an area value of 0.1 for a z-score of 0.25 and an area value of 0.35 for a z-score of 1.04.

  • Z-score and Area under the Normal curve

    The area under the normal curve for any range of values of the random variable X represents either • The proportion of the population with the characteristic described by the range.

  • Normal distribution curve and the association to individually

    The random variable X in the normal equation is called the normal random variable. The normal equation is the probability density function for the normal distribution.

  • Z-score and Standard Normal Distributions

    512570 Z-score and Standard Normal Distributions If the random variable z is the standard normal score and a > 0, is it true that P(z < -a) = P(z > a)? Why or why not?

  • Practice Quiz - Statistics

    The mean of the discrete probability distribution for a discrete random variable is called its expected value. _____20. A standard Z table score can be used to find probability for any normal curve problems that have been converted to Z scores.

  • Z-score for Normal Distribution and Continuous Probability

    195140 Z-score for Normal Distribution and Continuous Probability What is the relationship between the Z-score for Normal Distribution and Continuous Probability? Z-score for normal distribution is an example of continuous probability.

  • What is the value of c such that P(Z <= c) = 0.1271?

    330382 What is the value of c such that P(Z <= c) = 0.1271? Standard normal values: Basic Let Z be a standard normal random variable.

  • normal distribution and z-score

    227434 Understanding the z-score. The standard normal table shows an area value of 0.1 for a z-score of 0.25 and an area value of 0.35 for a z-score of 1.04.

  • Percentile Rank

    What would be the standard score for a score of 90? Standard score, = -0.6667 b. What percentage of scores is between 100 and 90? Let X be the random variable following normal with mean µ = 100 and standard deviation  = 15.

View More Related Solutions