Final Exam Part 3

The point at which the curve changes from curving upward to curving downward are called what?

About what % of thearea under the graph is between -2 and 2?

all possible values of a random variable can be listed along with the probability of each value

The mean gives the location of the line of symmetry.

What is the key question we need to answer about variability of the sampling distribution?

The normal curve approaches but never touches the x axis as it extends farther and farther away from the mean

a continuous frequency distribution of infiniterange.

In a standard normal distribution the mean always =

the number of cars that drive up to a bank within a 5 minute period is an example of discrete random variable

in standard normal distribution, standard deviation always =

There are 4 properties of Normal Distribution

thedistribution of sample statisticscomputed for different samples of thesame size from the same population

A Binomial Experiment has to have 5 characteristics

The standard error measures how much thestatistic varies from sample to sample

the process ofdrawing conclusions about the entirepopulation based on information in a sample.

height and weight are what kind of random variable?

A normal distribution can have any mean and anypositive standard deviation.

what % of the area underthe graph is between -1 and 1?

The normal distribution is a descriptive modelthat describes real world situations.

About what % of the area under the graph is between -3 and 3?

Normal Distribution has a bell shaped curve and is linear

Normal Distribution is the most important continuous probability distribution in statistics

The graph of a normal distribution is called the

The standard deviation describes the spread of thedata

a number that describessome aspect of a population.