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1. A man is in the process of buying a new car. He has a choice of 3 engine makes, 7 body styles and 10 colors. How many different cars does he have to choose from?

4. True or False? If false, correct it. For a given situation, the longer your confidence interval is, the lower your confidence in it is (why?).

5. What area under the standard normal curve falls outside the Z values 2.5 and 2.5? (why?)

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Dear student,
Please refer to the attachment for the solution.

A man is in the process of buying a new car. He has a choice of 3 engine makes, 7 body styles and 10 colours. How many different cars does he have to choose from?

Solution:
3×7×10=210
He can choose from 210 different cars.

True or False? If false, correct it. For a given ...

Solution provided by:
Anwesha Ghosh, MSc
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  • MSc, Indian Institute of Technology - Roorkee (I.I.T.-ROORKEE)
  • BSc, Banaras Hindu University
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