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Assignment4Live-c[1]

# Assignment4Live-c[1] - Assignment-4-Live-sol due by...

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Assignment-4-Live-sol- due by Midnight (11:59pm) Sunday, April 3 rd True/False questions carry 1.5 points each, Multiple Choices carry two points each and the Essay type questions carry 5 points each. The total score is 50 points. True/False (1.5 points each) Chapter 7 1. A sample size of 1000 is large enough to use normal approximation for the distribution of p, when the estimate of the population proportion is .990. False 2. For any sampled population, the population of all sample means is not always normally distributed. True 3 . The mean of the sampling distribution of is not always equal to the mean of the sampled population. False 4. The standard deviation of all possible sample proportions decreases as the sample size increases. True Chapter 8 5. Assuming the same significance level α , as the sample size increases, the value of t α /2 becomes smaller and smaller and approaches the corresponding value of z α /2 . True 6 . First a confidence interval is constructed without using the finite population correction factor. Then, for the same identical data, a confidence interval is constructed using the finite population correction factor. The width of the interval without the finite population correction factor is narrower than the confidence interval with the finite population correction factor. False 7. When the level of confidence and sample standard deviation remain the same, a confidence interval for a population mean based on a sample of n=100 will be 1

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wider than a confidence interval for a population mean based on a sample of n = 150. True 8 . When the level of confidence and the sample size remain the same, a confidence interval for a population mean µ will be narrower, when the sample standard deviation s is larger than when s is small.
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Assignment4Live-c[1] - Assignment-4-Live-sol due by...

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