Define Type I error and Type II error. Explain why both ‘‘false
positive’’ and ‘‘false negative’’ should be avoided in the analysis
and monitoring of environmental contaminants?
Describe what would be a type I error and what would be a type
II error:
A restaurant claims more than 42% of its new patrons return at
least once within a month.
Please provide an example of both a Type I Error and
Type II Error. Why is it that increasing the sample size reduces
the probability of a Type II error to an acceptable level. Please
discuss.
State the
hypotheses. Describe a Type I and Type II error in the context of
the problem and a consequence of each. Determine which type is most
serious. State whether alpha should be set high or low (based on
whether or not you feel a Type I error is the most serious or
not).
The state of Georgia
is considering spending $350 million on a computerized mathematics
curriculum that for grades 3 – 10. They pilot the program with 250...
For these discussion questions:
Define Type I and Type II error and explain their importance in
statistical research (5 points).
Discuss the use of directional and non-directional hypotheses.
How do we make the decision to use directional or non-directional
tests? (5 points)
Increasing the significance level of a test increases the
probability of a Type II error.
aTrue bFalse c Not sure
The larger the population variance, the higher the power of the
test.
a True b False c Not sure
The larger the sample size, the greater the power of the test
with everything else being equal.
a True b False c Not sure
Explain the relationship between Type I error and Type II error
in a hypothesis test.
The probability of committing a Type II error changes for each
alternative value of the parameter.
True
False
When conducting a hypothesis test on a population proportion,
the value of q is defined as p + 1.
True
False
4. The customer help center in your
company receives calls from customers who need help with some of
the customized software solutions your company provides. Previous
studies had indicated that 20% of customers who call the help
center are Hispanics whose...