Question

1. If a score has a z score of -1.5 it is located:

a. 1/2 standard deviation below the mean

b. 1 1/2 standard deviations above the mean

c. 3/4 of a standard deviation above the mean

d. 1 1/2 standard deviations below the mean

2. When a distribution has a predetermined mean and standard deviation, we call it a:

a. standardized distribution

b. predetermined distribution

c. normal distribution

d. random distrbution

3. A researcher records the weight in ounces of mucus that participants eho are exposed to the rhinovirus shed after being exposed to a stressor (A REAL EXPERIMENT!). The experimenter weighs the amount of mucus on the first participant's tissue and finds that it is 5 ounces. What is the upper and lower limits of this value?

please help, thanks

Answer 1

1. Option "D" is correct.

From the graph we can see that for -1.5 Z score the value of standard deviation is 1.5 to the left of mean i.e 1 and half below mean.

2. Option "C" is correct.

In normal dstribution we know the mean and standard deviation.