Find your question
and Get expert's answers*
Homework Help
*Click here to submit
Refer a Friend
Discount up to 15%*
Prepared References
Save up to 50%*
Homework Help >> Basic Statistics
  Give the possibility of randomly selecting a z-score  

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

Ask an Expert for Solution

Ask an Expert for Answer Give the possibility of randomly selecting a z-score

Request for Solution Files

Expected delivery within 24 Hours

Course: Basic Statistics

Ref. No:- TGS020946




Like US:-
Assignment Help

Ask an Expert & Get Answer

  • Quality work delivery
  • 100% Plagiarism free
  • Time on delivery
  • Privacy of work
Order Now
More Basic Statistics Questions


The uniform distribution over the interval 8.5 to 12.5 gallons per minute. Find the probability that between 10.5 gallons and 11.5 gallons are p
Gotham City wants to minimize the total distance cars must travel to respond to the three police calls. Use the Hungarian method to determine whic
A bed and breakfast breaks even every month if they book 30 rooms over the course of a month. Their fixed cost is $4200 per month and the revenue th
Explain the difference between multiple independent variables and multiple levels of independent variables. Which is better?
Suppose that the price of stock A is AED 25 and its standard deviation is 5. The average market price for all similar stocks is AED 20.Another stock
In an Asian country with apopulation of 6 million people, 60000 deaths occurred during the year ending December 31, 1995. these included 30000 death
Two players put one dollar each into a pot. They decide to throw a pair of dice alternately. The first one who throws a total of 5 on the two dice w
Define a random variable that represents the number of offers made. Is the random variable continuous? Show the value of the random variable for each
Find the joint distribution of vehicle type (passenger car / truck) and transmission type (automatic / manual) in New York.
The mean of the sampling distribution of means is equal to the mean of the population. T-F, and why or why not?