STATISTICS Session 2 - AM

Question 1

For a normal distribution, the mean ±2 Std Dev will include about what % of the observations?

Accepted Answer

95%

Question 2

Which is true for a binomial distribution?

Accepted Answer

The probability, p, remains the same from trial to trial.

Question 3

For a standard normal distribution, what is the probability that z is greater than 1.75?

Accepted Answer

0.0401

Question 4

Please choose 1.

Accepted Answer

Sir, I want to eat already! Very lapar!, Sir, I want to skip lunch to learn more! Give me!

Question 5

Consider this:

Accepted Answer

0.4332

Question 6

Consider this

Accepted Answer

0.1151

Question 7

Which of the following is true regarding the normal distribution?

Accepted Answer

The mean, median, and mode are all equal.

Question 8

What kind of distributions are the binomial and Poisson probability distributions?

Accepted Answer

Discrete

Question 9

What is the area under the normal curve between z = -1.0 and z = -2.0?

Accepted Answer

0.1359

Question 10

The standard normal probability distribution is unique because it has

Accepted Answer

A mean of 0 and a standard deviation of 1

Question 11

If the variance is 3.6 grams, what is the standard deviation?

Accepted Answer

1.897

Questions 11