Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Statistics and Probability Expert

Probability based on normal distribution.

1. A z-score of z = +1. A z-score of z = +2.00 indicates a position located exactly two standard deviations above the mean.

True

False

2. for a population with? = 100 and s = 20, the X value corresponding to z = 1.50 is X = 130.

True

False

3. A population with? = 100 and s = 20 is transformed into z-scores. The resulting distribution of z-scores will have a mean of zero.

True

False

4. One advantage of transforming X values into z-scores is that the transformation always creates a normal distribution.

True

False

5. for a population with? = 100 and s = 10, the score corresponding to z = 1.50 is X = ________.

a. X = 101.5

b. X = 105

c. X = 110.5

d. X = 115

6. Random sampling requires that each individual in the population has an equal chance of being selected.

True

False

7. A container has 4 red marbles and 5 blue marbles. If one marble is selected randomly, after that the probability of obtaining a red marble is 4/5 or 0.80.

True

False

8. For a normal distribution, the proportion in the tail beyond z = +1.00 is p = .1587, and the proportion in the tail beyond z = -1.00 is p = -.1587. (Points: 1)

True

False

9. If a vertical line is drawn throughout a normal distribution at z = 1.00, the proportion to the left of the line will be equal to 0.8413.

True

False

10. For a normal distribution, the possibility of randomly selecting a z-score greater than z = -2.00 is p = .0228.

True

False

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M920946

Have any Question? 


Related Questions in Statistics and Probability

1 can single-case experimental designs be used to test the

1. Can single-case experimental designs be used to test the effects of various levels of an independent variable (as in a one-way group design)? Explain. 2. How many levels of the independent variable are there in an ABA ...

What three criteria must be met to establish that one

What three criteria must be met to establish that one variable causes changes in behavior? Which of these criteria are met by quasi-experimental designs? Which of these criteria are not met, and why?

A psychologist measures units of change for a memory test

A psychologist measures units of change for a memory test after students are given an opportunity to sleep only four hours. The following change units were obtained: 7, -12, 4, -7, 3, -10. Find the a) mean, b) median, c) ...

A research concludes that the number of hours of exercise

A research concludes that the number of hours of exercise per week for adults is normally distributed with a mean of 3.5 hours and a standard deviation of 3 hours. (a) Find the 75th percentile for the distribution of exe ...

These are pretty similarthe population standard deviation

These are pretty similar: The population standard deviation of the number of people who shop online is 3.1. If you want to be 99% confident that the sample mean is within 2% of the population mean, how many people must b ...

When how and why was israel created discuss the six day

When, how, and why was Israel created? Discuss the Six Day War and the Yom Kipper War from both the Israeli and Arab points of view. Who are the most important leaders and personalities in the Middle East today?How might ...

How could the federal government at the time of the gilded

How could the federal government at the time of the Gilded Age have reduced the economy's exposure to panics and recessions?

Explain how the picture below helps us understand

Explain how the picture below helps us understand Christianity. Who were the thinkers that used these philosophers to understand their faith?

Question the mean weight 10 randomly selected newborn

Question: The mean weight 10 randomly selected newborn babies at a local hospital was found to be 7.14 and the standard deviation was found to be 0.87 lbs. If the weights of newborn babies is approximately normally distr ...

Imagine you obtained a point biserial correlation of 35

Imagine you obtained a point biserial correlation of .35 between gender and punctuality, showing that men arrived later to class than did women. You think that this correlation might be due to the fact that more women th ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro

Describe what you learned about the impact of economic

Describe what you learned about the impact of economic, social, and demographic trends affecting the US labor environmen