Question

4. 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 A B C 325 277 238 33 56 39 Order Accurate Order Not Accurate D 145 11 If one order is selected, find the probability of getting an order from Restaurant A or an order that is accurate. Are the events of selecting an order from Restaurant A and selecting an accurate order disjoint events? The probability of getting an order from Restaurant A or an order that is accurate is (Round to three decimal places as needed.) Are the events of selecting an order from Restaurant A and selecting an accurate order disjoint events? The events (1) disjoint because it (2) possible to (3) (1) O are not O are (2) O is not O is (3) O receive an accurate order from Restaurant A. Opick an inaccurate order. Opick an order from Restaurant B, C, or D. 5. 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 A B с 310 277 239 36 58 40 Order Accurate Order Not Accurate D 124 13 If two orders are selected, find the probability that they are both from Restaurant D. a. Assume that the selections are made with replacement. Are the events independent? b. Assume that the selections are made without replacement. Are the events independent? a. Assume that the selections are made with replacement. Are the events independent? The probability of getting two orders from Restaurant D is The events (1) independent the choice of the second order. because choosing the first order (2) (Round to four decimal places as needed.) b. Assume that the selections are made without replacement. Are the events independent? The probability of getting two orders from Restaurant D is The events (3) independent the choice of the second order. because choosing the first order (4) (Round to four decimal places as needed.) (3) (4) (1) O are O are not (2) O does not affect O affects are are not O affects does not affect

Answer 1

© A D Total order Accurate Not Aucurate 325 33 B 277 56 238C 238 39 985 139 Total 958 333 277 156 1124 prob ( getting order Order is accurate] from Restaurant A or PLAJ + Placcurate] - P (both ] og55 0.9057 358 +985-325 1124 Answer = 0.9057 ✓ y 0.906 V fill in the blanks 0 are not necive an acurate order from Restaurant A. C Total 950 A 310 36 Accurate Not accurate Total 277 58 239 124 13 137 346 279 logz @ prob C 2 orders from D] = ( 137 )² = 0.0156 v prob (both frum) = 137 × 136 = 0.0155 ✓ 1097 1096 fill in the blanks are not → ③ are does not affect affects. 4