Mathematics, 07.03.2020 04:57 dontcareanyonemo
A slitter assembly contains 48 blades. Five blades are selected at random and evaluated each day of sharpness. If any dull blade is found, the assembly is replace with a newly sharpened set of blades.
a. If 10 of the blades in an assembly are dull, what is the probability that the assembly is replaced the first day it is evaluated?
b. If 10 of the blades in an assembly are dull, what is the probability that the assembly is not replaced until the third day of evaluation? (Hint: assume that the daily decisions are independent and use the geometric distribution?
c. Suppose that on the first day of evaluation, 2 of the blades are dull. On the second day of evaluation 6 are dull; and on the third day of evaluation 10 are dull. What is the probability that the assembly is not replaced until the third day of evaluation? (Hint: assume that the daily decisions are independent. However the probability of replacement changes each day.
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Mathematics, 22.06.2019 04:10, u8p4
Walgreens sells both kleenex and nyquil. in a random sample of 5000 purchases, it was found that 1200 contained kleenex and 540 contained nyquil. these are not independent because sick people are more likely to buy both and healthy people more likely to buy neither. in looking into that, it was found that 360 purchases contained both. a. make a two-way table to display this information. fill in the table with the missing entries, and be sure your table has row and column totals. b. if we randomly select a purchase that contained kleenex, what is the probability it also contained nyquil? c. what percent of all purchases didn’t contain either product?
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If f(x)=x^2- 4 and g(x)=x^2 plus 2 x, (c) (f-/3) = ? (simplify your answer.)
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