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A sample of 400 First time home buyers found that the mean of annual household income was $60,000 and the sample standard deviation in income was $14,500. Construct 95% confidence intervals for the population mean annual household income for the first time home buyers.
For a random sample of 10 fifth generation iPod music players, the mean battery life was 9.47 hours with a standard deviation of 2.14 hours.
the height of a building is measured 32 times. the average of the measurements is 206 feet with standard deviation1.8
Select the level of significance, and determine critical, ZCR value.
a study of fill volumes is conducted at a food canning factory to determine the level of consistency between the two
A random sample of 15 items is taken, producing a sample mean of 2.364 with a sample variance of .81. Assume x is normally distributed and construct a 90% confidence interval for the population mean. Write a statistical hypothesis, Describe a null ..
breast-feeding mothers secrete calcium into their milk. some of the calcium may come from their bones so mothers may
Use the population mean and standard deviation to find the z-score corresponding to 14.5%, the rate offered by the Bar Harbor Bank and Trust Company. Is this above or below the average?
what is the decision rule for a hypothesis test about the dierence between two population means if the p -value is
According to recent surverys, 53% of households have personal computers. if a random sample of 175 households is selected, what is the probability that more then 75 but fewer than 110 have a personal computer?
Prove that an entire function that omits the value 0 and 1 is a constant.
the american college health association produced the national college health assessment andy gardiner surfacing from
Sub-dividing Numerical Values
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