The rockwell hardness of a metal is determined by
impressing a hardened point into the s...
Mathematics, 31.10.2019 00:31 miwptv105own5u8
The rockwell hardness of a metal is determined by
impressing a hardened point into the surface of the
metal and then measuring the depth of penetration of the
point. suppose the rockwell hardness of a particular
alloy is normally distributed with mean 70 and standard
deviation 3. (rockwell hardness is measured on a continuous
scale.)
a. if a specimen is acceptable only if its hardness is
between 67 and 75, what is the probability that a randomly
chosen specimen has an acceptable hardness?
b. if the acceptable range of hardness is (70-c, 70+c) ,
for what value of c would 95% of all specimens have
acceptable hardness?
Answers: 2
Mathematics, 21.06.2019 14:20, hilljade45
Simplify 6sin θsec θ. choices a) 6 tan θ b) 6 cos θ c) 6 cot θ d) 6
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Mathematics, 21.06.2019 18:30, mikey8510
The median of a data set is the measure of center that is found by adding the data values and dividing the total by the number of data values that is the value that occurs with the greatest frequency that is the value midway between the maximum and minimum values in the original data set that is the middle value when the original data values are arranged in order of increasing (or decreasing) magnitude
Answers: 3
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