Statistics Normal Probabilities

TRUE or FALSE: The area that corresponds to z = 2.58 is the same as the area that corresponds to z = -2.58, which is A = 0.4951

• TRUE

• FALSE

Find the area that corresponds to z = -1.15

It is the mathematical function that gives the probabilities of occurrence of different possible outcomes for an experiment.

It is a number which describes the spread of the distribution.

The following table represents the probability distribution X, the employment status of adults in a city.

What is the probability that the adults isn't retired?

If you select one adult at a random from this community, what is the probability that the adults is employed as part -time?

If you select one adult at a random from this community, what is the probability that the adults is working either part - time or full - time? 

It is a variable whose value is determined by the outcome of a random experiment.

This is an example of a ....

• normal distribution

• skewed distribution

• exponential distribution

• discrete distribution

What is an event (in statistics and probability)?

• some subset of outcomes from the sample space

• all of the outcomes in a sample space

• the probability of going out to a dance

• a subset of the outcomes from the complement