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Ryan
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(TCO B) According to a survey by the Opinion Research Corporation,
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(TCO B) According to a survey by the Opinion Research Corporation, 60% of all clerical workers in the United States “liked their jobs very much.” A random sample of 15 clerical workers is selected. Find the probability that
a. exactly nine of these clerical workers “liked their jobs very much.”
b. at least seven of these clerical workers “liked their jobs very much.”
c. fewer than five of these clerical workers “liked their jobs very much.” (Points : 18)
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Expert:
Ryan
replied 3 years ago.
Hi,
Do you know if you are expected to determine an exact value using the binomial probability calculation, or if you are supposed to use the normal approximation to the binomial distribution?
Thanks,
Ryan
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Customer:
replied 3 years ago.
Both
Expert:
Ryan
replied 3 years ago.
Hi,
Ok, I'll write up the solution using both methods. I'll have it posted for you as soon as I can.
Thanks,
Ryan
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Customer:
replied 3 years ago.
Thanks
Expert:
Ryan
replied 3 years ago.
Hi again,
Thank you for your patience.
Here are the solutions:
Probabilities
As always, please feel free to ask if you have questions about any of these solutions.
Thanks,
Ryan
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