Mathematics, 06.04.2020 20:35 paolaf9996
Two friends leave school at the same time, Sarah is heading due north and Beth is heading due east. One hour later they are 5 miles apart. If Sarah had traveled 4 miles from the school, how many miles had Beth traveled?
A. 1 mile
B. 2 miles
C. 3 miles
D. 5 miles
Answers: 3
Mathematics, 21.06.2019 17:30
Monthly water bills for a city have a mean of $108.43 and a standard deviation of $32.09. find the probability that a randomly selected bill will have an amount greater than $155, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?
Answers: 1
Mathematics, 21.06.2019 22:30
Amachine that produces a special type of transistor (a component of computers) has a 2% defective rate. the production is considered a random process where each transistor is independent of the others. (a) what is the probability that the 10th transistor produced is the first with a defect? (b) what is the probability that the machine produces no defective transistors in a batch of 100? (c) on average, how many transistors would you expect to be produced before the first with a defect? what is the standard deviation? (d) another machine that also produces transistors has a 5% defective rate where each transistor is produced independent of the others. on average how many transistors would you expect to be produced with this machine before the first with a defect? what is the standard deviation? (e) based on your answers to parts (c) and (d), how does increasing the probability of an event a↵ect the mean and standard deviation of the wait time until success?
Answers: 3
Mathematics, 21.06.2019 23:00
Who long does it take to drive 150 miles at 45 miles per hour
Answers: 2
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