Select Page

This document of BUS 308 Week 3 Quiz includes answers to the next questions:
1. Question : There is little difference between the values of ta/2 and Za/2 when the samplesize is small. size is large. mean is small. mean is large. standard deviation is small. 2. Question : If the population proportion is .4 with a sample size of 20 then is this sample large enough so that the sampling distribution of is a normal distribution.True False 3. Question : For non-normal populations as the sample size (n) _________ the distribution of sample means approaches a/an __________ distribution.decreases uniform increases normal decreases normal increases uniform increases exponential 4. Question : As the sample size ________the variation of the sampling distribution of ___________.decreases decreases increases remains the same decreases remains the same increases decreases 5. Question : Assuming the same value of a as the sample size increases the value of ta/2 approaches the value of Za/2.True False 6. Question : If the sampled population has mean 48 and standard deviation 16 then the mean and the standard deviation for the sampling distribution of for n = 16 are4 and 1. 12 and 4. 48 and 4. 48 and 1. 48 and 16. True False 8. Question : As our sample standard deviation increases when all other parts of the confidence interval stay the same then the confidence interval will become:wider narrower remain the same. 9. Question : When the sample size and sample standard deviation remain the same a 99% confidence interval for a population mean