{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Finding p-values

# Finding p-values - P-values with the Ti83/Ti84 Note The...

This preview shows pages 1–3. Sign up to view the full content.

P-values with the Ti83/Ti84 Note : The majority of the commands used in this handout can be found under the DISTR menu which you can access by pressing [2 nd ] [VARS]. You should see the following: NOTE : The calculator does not have a key for infinity ( ). In some cases when finding a p-value we need to use infinity as a lower or upper bound. Because the calculator does not have such a key we must use a number that acts as infinity. Usually it will be a number that would be “off the chart” if we were to use one of the tables. Please note this in the following examples. Z-table p-values: use choice 2: normalcdf( 1. NOTE: Recall for the standard normal table (the z-table) the z-scores on the table are between –3.59 and 3.59. In essence for this table a z-score of 10 is off the charts, we could use 10 to “act like” infinity. a. Left-tailed test (H1: µ < some number). The p-value would be the area to the left of the test statistic. Let our test statistics be z = -2.01. The p-value would be P(z <-2.01) or the area under the standard normal curve to the left of z = -2.01. Notice that the p-value is .0222. We can find this value using the Normalcdf feature of the calculator found by pressing [2 nd ] [VARS] as noted above.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
The calculator will expect the following: Normalcdf(lowerbound, upperbound). Try typing in: Normalcdf(-10, -2.01) , after pressing [ENTER] you should get the same p-value as above.
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### Page1 / 6

Finding p-values - P-values with the Ti83/Ti84 Note The...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online