IEE 380 EXAM 2 EXAM WITH CORRECT
ACTUAL QUESTIONS AND CORRECTLY
WELL DEFINED ANSWERS LATEST
ALREADY GRADED A+
'The central limit theorem states that the distribution of the
mean of independent, identically distributed random
variables with finite variance is the normal distribution. -
ANSWERS-True
A point estimator of an unknown parameter is unbiased if
the expected value of the estimator equals the parameter. -
ANSWERS-True
For a fixed value of the standard deviation and a fixed
sample size, a confidence interval on the population mean
will get longer as the level of confidence increases from 96%
to 99%. - ANSWERS-True
, For a fixed value of the standard deviation, a 95%
confidence interval on the population mean will get shorter
if the sample size increases. - ANSWERS-True
This is a correct statement of a statistical hypothesis:
H0: X bar = 10 - ANSWERS-False
A type II error occurs if we fail to reject the null hypothesis
when it is false. - ANSWERS-True
A type I error occurs if the null hypothesis is rejected when
it is actually true. - ANSWERS-True
The power of a statistical test is 1 - Probability(type II error).
- ANSWERS-True
The P-value is the smallest level of significance that would
lead to rejection of the null hypothesis. - ANSWERS-True
If the variances of two discrete random variables are equal,
then the means are equal. - ANSWERS-False
ACTUAL QUESTIONS AND CORRECTLY
WELL DEFINED ANSWERS LATEST
ALREADY GRADED A+
'The central limit theorem states that the distribution of the
mean of independent, identically distributed random
variables with finite variance is the normal distribution. -
ANSWERS-True
A point estimator of an unknown parameter is unbiased if
the expected value of the estimator equals the parameter. -
ANSWERS-True
For a fixed value of the standard deviation and a fixed
sample size, a confidence interval on the population mean
will get longer as the level of confidence increases from 96%
to 99%. - ANSWERS-True
, For a fixed value of the standard deviation, a 95%
confidence interval on the population mean will get shorter
if the sample size increases. - ANSWERS-True
This is a correct statement of a statistical hypothesis:
H0: X bar = 10 - ANSWERS-False
A type II error occurs if we fail to reject the null hypothesis
when it is false. - ANSWERS-True
A type I error occurs if the null hypothesis is rejected when
it is actually true. - ANSWERS-True
The power of a statistical test is 1 - Probability(type II error).
- ANSWERS-True
The P-value is the smallest level of significance that would
lead to rejection of the null hypothesis. - ANSWERS-True
If the variances of two discrete random variables are equal,
then the means are equal. - ANSWERS-False
