Mathematics, 10.05.2021 19:40 kelchalyssa
A population has a mean of 5, with a standard deviation of 1. A sample of 50 items from that population has a mean of 4.5, with a standard deviation of 1.1.
Which equation describes the population parameter?
A. x = 5
B. u = 4.5
C. x = 4.5
D. u = 5
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 aΓ’β Β΅ect the mean and standard deviation of the wait time until success?
Answers: 3
Mathematics, 22.06.2019 00:20
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Mathematics, 22.06.2019 00:30
Consider this expression and the steps to evaluate it. 4^5(β2)^9/4^8(β2)^3 1. apply the quotient of powers: ββββ (β2)^a/4^b 2. evaluate powers: βββββββββ c/d select the value of each variable. a = _ b = _ c = _ d = _
Answers: 3
A population has a mean of 5, with a standard deviation of 1. A sample of 50 items from that populat...
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