Question
The purpose of statistical inference is to provide
information about the
population based upon information contained in the sample
The probability distribution of the sample mean is called the
Sampling distribution of the mean
A subset of a population selected to represent the population
is
A sample
In computing the standard error of the mean, the finite
population correction factor is used when
n/N > 0.05
The time it takes a mechanic to change the oil in a car is
exponentially distributed with a mean of 5 minutes. What is the
probability that it will take a mechanic less than 6 minutes to
change the oil? Use Excel and round your answer to four
decimal places
.0.6988
The probability distribution of the sample mean is called
thesampling distribution of the mean
Whenever the population has a normal probability
distribution, the sampling distribution of x is a normal
probability distribution for
Any sample size
A population characteristic, such as a population mean, is
called
A parameter
As the sample size increases, the
Standard error of the mean decreases
A simple random sample of 6 computer programmers in Houston,
Texas revealed the gender of the programmers and the following
information about their weekly incomes.
ProgrammerWeekly
IncomeGenderA$250MB270MC285FD240ME255MF290FDetermine a point
estimate of the proportion of all the programmers in Houston who
are female. Round your answer to three decimal places..
333
A simple random sample of 100 observations was taken from a
very large population. The sample mean is 80 and the population
standard deviation is 12. The standard deviation of the sampling
distribution of the sample means is
1.2
Other samples, services and questions:
When you use PaperHelp, you save one valuable — TIME
You can spend it for more important things than paper writing.
