Question

The diameters of ball bearings are distributed normally. The mean diameter is 120 millimeters and the standard deviation is 4 millimeters. Find the probability that the diameter of a selected bearing is greater than 125 millimeters. Round your answer to four decimal places.

Answer #1

σ = 4

P ( X > 125 ) = P( (X-µ)/σ ≥ (125-120) /
4)

= P(Z > 1.25 ) = P( Z <
-1.250 ) = **0.1056
(answer)**

The diameters of ball bearings are distributed normally. The
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The diameters of ball bearings are distributed normally. The
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44 millimeters. Find the probability that the diameter of a
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The diameters of ball bearings are distributed normally. The
mean diameter is 96 millimeters and the standard deviation is 6
millimeters.
Find the probability that the diameter of a selected bearing is
between 89 and 105 millimeters. Round your answer to four decimal
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The diameters of ball bearings are distributed normally. The
mean diameter is 89 millimeters and the variance is 9. Find the
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mean diameter is 135millimeters and the variance is 9. Find the
probability that the diameter of a selected bearing is between 137
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A process manufactures ball bearings with diameters that are
normally distributed with mean 25.1 millimeters and standard
deviation 0.08 millimeter.
(a) What proportion of the diameters are less than 25.0
millimeters?
(b) What proportions of the diameters are greater than 25.4?
(c) To meet a certain specification, a ball bearing must have a
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(d) Find the 95th percentile of the diameters.

Precision manufacturing: A process manufactures ball bearings
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a. What is the probability that a ball...

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