Lesson-The Normal Random Variable

Multiple Select

What are the parameters that represent a normal equation?

• population mean

• sample mean

• standard deviation

• variance

Multiple Choice

It is the most common model for relative frequencies of a continuous random variable.

• normal probability distribution

• standard normal distribution

• normal curve

• normal random variable

Multiple Choice

Which of the following is not a normal random variable?

• sale price

• interest rates

• errors in measurement

• number of minutes the pizza will be delivered

Multiple Choice

Which mathematical constants are present in the normal equation?

• phi (φ) and square root of 2 (√2)
• pi (π) and Euler's number (e)
• tau (τ) and golden ratio (φ)
• logarithm base 10 (log10) and imaginary unit (i)

Multiple Choice

Which of the following is not a reason why some data are not normally distributed?

• There are many outliers.

• The data has insufficient size.

• A different distribution describes the data.

• The mean is in the center of the population.