Hit the y= button. You most likely have a StatPlot turned on. Look for any of the StatPlots at the top of the screen. Use the up arrow to get to the StatPlots and hit enter on any highlighted. Or you can hit 2nd y= and see which ones say on and turn them off.
the best explanation in statistics , thank you
Thanks!
Exactly
Thank you for All
How do I find the p value if I only have the z score?
You can either just look at the tail in the test and use a normal table to find the area in the tail. You can also use normal CDF in technology.
For the TI -84, you would hit 2nd VARS 2:normalcdf. Lower is where you start shading, upper is where you stop shading, mean is 0 and st. dev is 1.
I thought this was fantastic. Thanks!
Thank you. I'm glad it helped you.
what if you do not know the population standard deviation? thank you!
Then you can't run the z-test. You use the t-test when the population standard deviation is unknown. That is the difference between the two tests.
@@MathandStatsHelp thank you!!
my calculator is only giving me a box plot how do I reset it ?
Hit the y= button. You most likely have a StatPlot turned on. Look for any of the StatPlots at the top of the screen. Use the up arrow to get to the StatPlots and hit enter on any highlighted. Or you can hit 2nd y= and see which ones say on and turn them off.