Question

In: Statistics and Probability

1)The diameters of bolts produced by a certain machine are normally distributed with a mean of...

1)The diameters of bolts produced by a certain machine are normally distributed with a mean of 0.30 inches and a standard deviation of 0.01 inches. What is the probability of selecting a bolt at random that has a diameter larger than 0.328 inches?

2)

The diameters of pencils produced by a certain machine are normally distributed with a mean of 0.30 inches and a standard deviation of 0.01 inches.

What is the probability that the diameter of a randomly selected pencil will be more than 0.285 inches?

3)In a standard normal distribution, what is the probability of a z-score being greater than -0.85?

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orchestra answered 2 years ago
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