AP Bio - Bozeman Video (Chi-Squared Tests)

If the χ² _critical value = 5.99 and the

χ² _calculated value = 7.35, what is the conclusion

• Reject null hypothesis

• Accept null hypothesis

• there is not enough info to decide

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

What are the degrees of freedom for the following χ² test?

• 6

• 2

• 5

• 12

Find the degrees of freedom.

• 4

• 5

• 6

• 7

According to the "Animal Behavior" example that Mr. Andersen proposed at the very end of the video - what was the final answer?

• 6.084 - accept the null hypothesis

• 6.084 - reject the null hypothesis

• 1.56 - accept the null hypothesis

• 1.56 - reject the null hypothesis

According to the "Dice" example that Mr. Andersen demonstrated in the video - what was the final answer?

• 9.6 - reject the null hypothesis

• 9.6 - accept the null hypothesis

• 7.4 - reject the null hypothesis

• 7.4 - accept the null hypothesis

According to the "Quarters" example that Mr. Andersen demonstrated in the video - what was the final answer?

• 0.72 - reject the null hypothesis

• 0.72 - accept the null hypothesis

• 0.52 - reject the null hypothesis

• 0.52 - accept the null hypothesis

A problem that starts with "a manager thinks that 50% of the company's employees were educated on the east coast and 50% were educated on the the west coast".

Actual Cell Count

East Coast = 56

West Coast = 44

• chi-squared value is 1.44 - reject the null hypothesis

• chi-squared value is 1.44 - accept the null hypothesis

• chi-squared value is 0.84 - reject the null hypothesis

• chi-squared value is 0.84 - accept the null hypothesis