MA 450 | Unit 9 - Activity (Confidence Intervals for Slopes)
Authored by Shawn Turner
Mathematics
11th - 12th Grade
CCSS covered
Used 4+ times
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9 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
The x-variable is _____
Row
Score
Tags
CCSS.8.SP.A.1
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
The y-variable is _____
Row
Score
Tags
CCSS.8.SP.A.1
3.
FILL IN THE BLANK QUESTION
3 mins • 1 pt
In your calculator, go to STAT > EDIT > 1: Edit and insert "Row" in L1 and "Score" in L2.
Then, go to STAT > CALC > 8: LinReg(a+bx).
Rounding to 2 decimal places, what is the a-value?
Tags
CCSS.HSS.ID.C.8
4.
FILL IN THE BLANK QUESTION
30 sec • 1 pt
Rounding to 3 decimal places, what is the b-value?
Tags
CCSS.HSS.ID.C.8
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Identify the LSRL equation.
y = 85.85 – 1.517x
SCORE = 85.85 – 1.517ROW
SCORE-hat = 85.85 – 1.517ROW
SCORE-hat = 85.85 – 1.517ROW-hat
Tags
CCSS.HSS.ID.C.8
6.
FILL IN THE BLANK QUESTION
30 sec • 1 pt
Since we have a sample of 30 students, randomly assigned to a row, how many degrees of freedom will we use?
Tags
CCSS.HSS.IC.B.4
7.
FILL IN THE BLANK QUESTION
2 mins • 1 pt
For a 95% confidence interval and 28 degrees of freedom, what is the critical t-value for our confidence interval, rounded to 3 decimal places?
*Hint: Use 2nd DISTR > 4: InvNorm(area, df).
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