A test consists of 10 true/false questions. To pass the test a student must answer at least 66 questions correctly. If a studen
1 answer:
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Answer:
(3.5, -1).
Step-by-step explanation:
Use the midpoint formula to solve this problem:
Plug in the coordinates given:
Simplify:
Therefore, the coordinates of the mid-point are:
(3.5, -1).
Answer:
0.97
Step-by-step explanation:
Given that a homeowner has two smoke detector alarms installed, one in the dining room (adjacent to the kitchen) and one in an upstairs bedroom (above the kitchen). If cooking produces smoke in the kitchen, the probability of setting off the dining room alarm (D) is .95. The probability of setting off the bedroom alarm (B) is .40.
Both alarms are independent of each other.
Probability for smoke detection=P(any one alarm rings)
=P(Kitchen alarm sets off)+P(bed room alarm sets off)-P(Both sets off)
Since both are independent
P(Both) =
Probability for smoke detection
= 0.95+0.40-0.38
=0.97