Mathematics, 24.02.2021 15:40 ayoismeisalex
The soccer balls manufactured at a factory have pressures that are Normally distributed, with a mean pressure of 8.7 PSI and a standard deviation of 0.2 PSI. What percentage of soccer balls from the factory have a pressure between 8.1 and 8.7 PSI? 0.3% 49.85% 50% 99.7%
Answers: 1
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Write the expression 7x^3-28xy^2 as the product of 3 factors
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What additional information is needed to prove that the triangles are congruent using the aas congruence theorem? o lolm o oama o zloa zlma o zlao – zlam
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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
The soccer balls manufactured at a factory have pressures that are Normally distributed, with a mean...
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