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ll harction Illarction llunal (heart (heart attackyin young attack in own to determine if the -emount of coffee r conclusion. Heart Atack Coffee Consumption Yes No Total Fewer than 5 cups 88 172 260 More than 5 cups 40 81072 (20) 7s Fewer than 5 cups 85)| 2 8524 Total 128 217 345

Solution

H0: Amount of coffee drinking and myocardinal infraction are independent

Ha: The two are related

Two tailed chi square test

Prepare contingency table for chi square

The chi-square statistic is 4.7921. The p-value is .028591. The result is significant at p < .05.

As p value is <0.05 our alpha level, we find that the two are related

Note: If alpha = 0.01, then we reject null hypothesis.

Results
	Yes	No				Row Totals
<5 cups	88  (96.46)  [0.74]	172  (163.54)  [0.44]				260
> 5cups	40  (31.54)  [2.27]	45  (53.46)  [1.34]				85
Column Totals	128	217				345  (Grand Total)