# True or false: a. All normal distributions are symmetrical b. All normal distributions have a mean of 1.0 c. All normal distributions have a standard deviation of 1.0 d. The total area under the curve of all normal distributions is equal to 1

True or false:
a. All normal distributions are symmetrical
b. All normal distributions have a mean of 1.0
c. All normal distributions have a standard deviation of 1.0
d. The total area under the curve of all normal distributions is equal to 1
You can still ask an expert for help

• Questions are typically answered in as fast as 30 minutes

Solve your problem for the price of one coffee

• Math expert for every subject
• Pay only if we can solve it

liannemdh
Step 1
a) True, all normal distributions are symmetrical, bell shaped curve.
Step 2
b) False: Not all normal distributions have mean as 1. Means vary depending on the type of data.
Step 3
c) False: Not all normal distributions have standard deviations as 1. Standard deviation, or for that matter, variance vary depending on the type of data.
Step 4
d) True: Total area under the curve of all normal distribution is 1.