MSSL Chi Square Test for Independence

What are the expected counts of a female who likes Pepsi?

• 10.5
• 11
• 14.5
• 6.3

Tags

CCSS.HSS.CP.A.4

CCSS.HSS.ID.B.5

CCSS.HSS.MD.A.2

What is the null hypothesis?

• Injury type is independent of position played
• Injury type is dependent on the position played independent

Tags

CCSS.HSS.CP.A.2

CCSS.HSS.CP.A.3

A random sample of traffic tickets given to motorists in a large city is examined.  The tickets are classified according to the race of the driver.  The results are summarized in the table provided.  Assuming H₀ is true, the expected number of Hispanic drivers who would receive a ticket is

• 10.36
• 11
• 11.84
• 12

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.4

CCSS.HSS.MD.A.3

What is the

χ² _calculated value for the following situation.

• 6.65

• 6.66

• 0.00991

• 1

If the χ² _critical value = 5.99 and the

χ² _calculated value = 7.35, what is the conclusion

• Reject Ho, accept H1

• Accept Ho, reject H1

• there is not enough info to decide

• The conclusion can only be made if we also know the p-value

Tags

CCSS.HSS.ID.B.5

CCSS.HSS.IC.B.5

If we are testing at a 5% significance level and our p-value is 0.00453, what is the conclusion?

• Accept Ho

• Reject Ho

• We need to know chi-squared

• You cannot do this problem without a calculator

Find the chi-squared calculated value for the table.

• 0.486170447

• 1.442392006

• 1.45

• 2

Given that a student is male, what is the probability that maths is their favorite?

• 0.491

• 0.225

• 0.443

• .508

Tags

CCSS.HSS.CP.A.4

For a p-value from the calculator of 1.32355E-3 what would the conclusion be if testing at 10% significance level?

• Accept Ho

• Reject H1

• Reject Ho

• Need to know the chi-squared number