Get out your 68-95-99.7 Rule half sheets and your packet: Lesson 5.5 & 5.6.
No statsmedic today, only the calculator and the Normal Distribution Chart.
Get out your 68-95-99.7 Rule half sheets and your packet: Lesson 5.5 & 5.6.
No statsmedic today, only the calculator and the Normal Distribution Chart.
What does the z-score mean?
Suppose that a Normal model described student scores in a history class.
Francisco has a standardized score (z-score) of +2.5.
This means that Francisco’s score...
The distribution of speed follows an approximately Normal distribution with a mean of 80 mph and a standard deviation of 7.7 mph.
Use the 'show your work' section to put in the Delorean speeds under the axis for the Normal Distribution Model.
Then answer:
What speed is 2 standard deviations above the mean?
Be sure to include units 'mph' in your answer.
I will check your normal curve data values, points will be subtracted if it is not correct.
Give the notation for the Normal model using the Delorean Speed information above.
Use the format: N(#, #)
Using the 68-95-99.7 Rule & your half sheet:
What percent of the runs will give the Delorean a speed greater than 87.7 mph?
THEN shade in the probability area you are calculating in the 'show your work area'.
1 point is for your shading.
Using the 68-95-99.7 Rule & your flip book:
What percent of the runs will give the Delorean a speed between 64.6 mph and 87.7 mph?
THEN Shade in the probability area that you are calculating in the 'show your work' area.
1 point is for your shading.
High levels of cholesterol in the blood increase the risk of heart disease.
For teenage boys, the distribution of blood cholesterol is approximately normal with
mean μ = 151.6 milligrams of cholesterol per deciliter of blood (mg/dl) and
standard deviation σ = 25 mg/dl.
What is the Normal model for this situation?
Use the format: N(#, #)
6th grade STAAR scores were tabulated for Round Rock ISD, the normal model N(1142, 110) was appropriate for the data.
If a student scored 1040 on his STAAR test, what was his z-score?
Round your answer to three places past the decimal.
6th grade STAAR scores were tabulated for Round Rock ISD, the normal model N(1142, 110) was appropriate for the data.
A student scored 1040 on his STAAR test, you just calculated his z-score.
What does this mean?
Using the normal model: N(1142, 110)
Which 6th grade STAAR score is more unusual: a score of 889 or 1351?
Hint: use the z-scores to compare