Question

Your friend has been collecting baseball cards. The company claims that you should have a 60% chance of finding a normal card, a 30% chance of finding an uncommon card, and a 10% chance of finding a rare card. Your friend has been opening packs of cards and collected 50 cards: 35 normal, 14 uncommon, and only 1 rare card.

Fill in the table below to find the Chi Square value of the baseball card sample.

Answer 1

applying chi square goodness of fit test:

below is the chi square table:

	relative	observed	Expected	residual	Chi square
category	frequency(p)	Oi	Ei=total*p	R2i=(Oi-Ei)/√Ei	R2i=(Oi-Ei)2/Ei
normal	0.60	35.0	30.00	0.91	0.833
uncommon	0.30	14.0	15.00	-0.26	0.067
rare	0.10	1.0	5.00	-1.79	3.200
total	1.000	50	50		4.1000
test statistic X2 =		4.1000
p value =		0.1287

(please reply if further help is required on this)