Which of the following is NOT a requirement for constructing a confidence interval for estimating a population mean with sigmaσ known?Choose the correct answer below.
A.The sample is a simple random sample.
B.Either the population is normally distributed or greater than>30, or both.
C.The confidence level is 95%.
D.The sample measures a quantitative value.
A confidence interval for the population parameter is an interval cantered about the sample statistic with width equal to twice the margin of error. If many samples are taken from a population with the same sample size then the proportion of the constructed confidence intervals that will contain the population parameter is
The probability of success in a single trial of a binomial experiment is this probability is a population proportion.
A point estimate is a single value estimate for a population parameter. The most biased point estimate of the population mean is equal to sample mean and the population standard deviation is equal to sample standard deviation
The confidence interval formula is,
The most biased point estimate of the population mean is equal to sample mean and the population standard deviation is equal to sample standard deviation
The most biased point estimate of the population mean is equal to sample mean and the population standard deviation is equal to sample standard deviation
The population standard deviation is know, so we use standard normal test otherwise we use student test.
The correct option is: C
The confidence level is 95%.
The confidence level is not a requirement for constructing a confidence interval for estimating a population mean with sigma known.
Ans:The confidence level is 95%.
Which of the following is NOT a requirement for constructing a confidence interval for estimating a...
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