PSY/210 M3 Assignment 2 LASA Quiz - A Guaranteed!

1.

Question :

A jar contains 10 red marbles and 20 blue marbles. What is the probability of randomly selecting a red marble?

Student Answer:

0.5

0.33

0.10

0.033

Question 3.

Question :

The probability that an event will occur is written as follows

Student Answer:

P=1

P(E) – 

P(E-1)

P(not E)

Question 4.

Question :

When rolling a die, the probability of getting a 2 is ____.

Student Answer:

.0167

.167

1.67

none of the above

Instructor Explanation:

Question 6.

Question :

For a population with a mean of 80 and a standard deviation of 10, what is the Z score corresponding to an individual score of 95?

Student Answer:

+0.25

+0.50

+0.75

+1.50

Question 7.

Question :

In a normal distribution, if the mean and mode are both 25, the median would be ____.

Student Answer:

unable to calculate without further information

also 25

the square root of 25

50 minus the standard deviation of the distribution

.

Question 8.

Question :

Under what circumstances would a score that is located 10 points above the mean be considered relatively close to the mean?

Student Answer:

when the population mean is much less than 10

when the population mean is much greater than 10

when the population standard deviation is much less than 10

when the population standard deviation is much greater than 10

Question 9.

Question :

If the null hypothesis stated that Group A results would be the same as Group B, would this represent a one-tailed or two-tailed test?

Student Answer:

One-tailed

Two-tailed

it could be either one depending on the groups

cannot determine without additional information

Question 10.

Question :

Under what circumstances would a score that is located five points above the mean be considered relatively close to the mean?

Student Answer:

when the population mean is much less than five

when the population mean is much greater than five

when the population standard deviation is much less than five

when the population standard deviation is much greater than five