Question

Mr. Zach is a commander of the Plutonium Air force Zyu servicing Evil Statistics Professor’s plutonium mines’ logistical needs. Evidently, he hired some bad pilots in addition to good ones. This Christmas, quite reasonably, Dr. Z is expecting a relationship between how bad a pilot is and what Santa brings him, with bad pilots getting more sad coal and good pilots being rewarded by nice presents. Take a look at the following table.

a. How many good pilots should be expected to be getting coal under the null hypothesis?

b. What is the value of the chi-square statistic?

c. Based on your chi-square versus the critical value, does your data support the conclusion that there is a difference in which gifts the good and bad pilots get?

Group of answer choices

No, because my value is lower than the crirtical value

Yes, because my value is lower than the critical value

No, because my value is higher than the critical

Yes, because my value is higher than the critical value

	Pilot quality
	Good	Bad
Nice present	25	25
Lump of coal	10	40

Answer 1