BUS 204 Week 7 Quiz

BUS 204 Week 7 Quiz | MiraCosta College 

Question 1

Which of the following is not a characteristic of the normal distribution?

Bell-shaped  

Symmetric  

Equal probabilities at all values of x  

Mean = median = mode

Question 2

T-Mobile sells 6 different models of cell phones and have found that they sell an equal number of each model. The probability distribution that would describe this random variable is called:

uniform distribution.  

continuous distribution.  

Poisson distribution.  

relative frequency distribution.

Question 3

Which of the following probability distributions would most likely be used to describe the time between failures for electronic components?

Normal distribution  

Uniform distribution  

Binomial distribution  

Exponential distribution

Question 4

The Excel 2016 function for z-values is:

=STANDARDIZE(x,mean,standard_dev)

=STANDARDIZE(x,mean,standard_dev,cumulative)

=NORM.DIST(x,mean,standard_dev)

=NORM.DIST(x,mean,standard_dev,cumulative)

Question 5

One example of a difference between discrete random variables and continuous random variables is that in a discrete distribution P(x > 2) = P(x ≥ 3) while in a continuous distribution P(x > 2) is treated the same as P(x ≥ 2).

True  

False

Question 6

Typically, a continuous random variable is one whose value is determined by measurement instead of counting.

True  

False