ANSWER BOTH QUESTIONS OR DON\'T ANSWER AT ALL......... Use the data in the follo
ID: 3064236 • Letter: A
Question
ANSWER BOTH QUESTIONS OR DON'T ANSWER AT ALL.........
Use the data in the following table, which lists drive-thru order accuracy at popular fast food chains. Assume that orders are randomly selected from those included in the table Drive-thru Restaurant Order Accurate Order Not Accurate 260 60 243 133 35 18 If one order is selected, find the probability of getting an order that is not accurate or is from Restaurant C. Are the events of selecting an order that is not accurate and selecting an order from Restaurant C disjoint events? The probability of getting an order from Restaurant C or an order that is not accurate is (Round to three decimal places as needed.)Explanation / Answer
a) Total orders = 337 + 31 + 260 + 60 + 243 + 35 + 133 + 18 = 1117
P(order from restaurant C or order that is not accurate) = P(order from restaurant C) + P(order that is not accurate) - P(order from restaurant C and it is not accurate)
= (243 + 35)/1117 + (31 + 60 + 35 + 18)/1117 - 35/1117
= 0.346
b) Total orders = 313 + 39 + 266 + 53 + 248 + 31 + 141 + 20 = 1111
P(order from restaurant B or C or order that is not accurate) = P(order from restaurant B or C) + P(order that is not accurate) - P(order from restaurant B or C and it is not accurate)
= (266 + 53 + 248 + 31)/1111 + (39 + 53 + 31 + 20)/1111 - (53 + 31)/1111
= 0.591
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