1. The net profit of an investment is normally distributed with a mean of $10,000 and a standard deviation of $5,000. The probability that the investor's net gain will be at least $5,000 is _____________.
a) 0.4967
b) 0.8413
c) 0.1859
d) 0.3413

2. A company believes that it controls more than 30% of the total market share for one of its products. To prove this belief, a random sample of 144 purchases of this product are contacted. It is found that 50 of the 144 purchased this company's brand of the product. If a researcher wants to conduct a statistical test for this problem, the test would be _______.
a) an alpha test
b) a one-tailed test
c) a finite population test
d) a two-tailed test

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1. The net profit of an investment is normally distributed with a mean of $10,000 and a standard deviation of $5,000. The probability that the investor's net gain will be at least $5,000 is _____________.

a) 0.4967
b) 0.8413
c) 0.1859
d) 0.3413

Answer: b) 0.8413

Mean=M = ...

Solution Summary

Answers multiple choice questions on Normal Distribution, Statistical test.

... the information randomness among all distributions with known ... of established facts (The Normal Distribution, 2008). ... in the context of statistical analysis, the ...

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... k degrees of freedom and the distribution is of ... squares of k independent standard normal random variables ... a widely used probability distributions in inferential ...

... a .05 level of significance, test the claim ... Questions on normal distribution, testing of hypothesis etc have ... 5. Find the following Z-statistics and associated ...

... usually found at the end of Statistics books ... which is the usual notation for a standard normal distribution. ... http://www.math2.org/math/stat/distributions/z-dist ...

Descriptive Statistics and hypothesis testing. ... If you read the following statistics in a report, which ... 52.0 and SD =4.0 for a normal distribution, between which ...

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