Question

In: Statistics and Probability

A company produces steel chains with an average breaking strength of ?=200 lbs with ?=10 lbs....

A company produces steel chains with an average breaking strength of ?=200 lbs with ?=10 lbs.


Suppose you take a sample of n=100 chains. What is the probability that the sample mean breaking strength will be 201 lbs or more?

0.4413
0.8587
nearly 0
0.1587

Solutions

Expert Solution

Let denotes the sample mean breaking strength for  a sample of n=100 chains.

or

Now,

The probability that the sample mean breaking strength will be 201 lbs or more

orchestra answered 2 years ago
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