Bstat Exam 2 questions well answered
100% correct
Standard deviation - correct answer ✔✔what statistic is used to measure the spread of data?
sample proportion - correct answer ✔✔What does P^ stand for?
interval of numbers that represent the most plausible values for an unknown population
parameter based on the sample results - correct answer ✔✔Define a confidence interval
standard error of the sample proportions - correct answer ✔✔What does SE(p^) stand for?
- The larger the margin of error the wider the interval (& vice versa)
- The smaller the margin of error the wider the interval (& vice versa)
deeper explanation:
- as confidence level drops, z score drops, therefore ME drops - correct answer ✔✔How does
the size of margin of error effect the confidence interval?
larger n = smaller SE(p^) = smaller ME = smaller interval
smaller n = larger SE(p^) = larger ME = larger interval - correct answer ✔✔What are the effects
of sample size on the Margin of Error
Null = Ho: states that nothing has changed
, Alternative = Ha: states the population parameter has changed in some way - correct answer
✔✔What is the Null hypothesis and The Alternative Hypothesis?
the hypothesized value of p - correct answer ✔✔what does Po stand for?
You reject Ho when Ho is actually true - correct answer ✔✔What is a type 1 error?
Accepting Ho when Ho is false - correct answer ✔✔What is a type 2 error?
Rejecting Ho: sufficient evidence
Accepting Ho: insufficient evidence - correct answer ✔✔What does it mean to reject Ho and
accept Ho?
the PROBABILITY of getting sample data at least as contradictory to the null as you got, if the
null were in fact true - correct answer ✔✔What does the P value measure?
We reject Ho. sufficient evidence that Ha is true - correct answer ✔✔P-value < a
Accept Ho. Insufficient evidence that Ha is true. - correct answer ✔✔P-value >= a
1. independence
2. randomization
3. 10% condition
4. Sample size - correct answer ✔✔What are the conditions of the normal model?
accept Ho. Insufficient evidence to support Ha. P-value > a - correct answer ✔✔conclusion
when Ho is inside an interval?
100% correct
Standard deviation - correct answer ✔✔what statistic is used to measure the spread of data?
sample proportion - correct answer ✔✔What does P^ stand for?
interval of numbers that represent the most plausible values for an unknown population
parameter based on the sample results - correct answer ✔✔Define a confidence interval
standard error of the sample proportions - correct answer ✔✔What does SE(p^) stand for?
- The larger the margin of error the wider the interval (& vice versa)
- The smaller the margin of error the wider the interval (& vice versa)
deeper explanation:
- as confidence level drops, z score drops, therefore ME drops - correct answer ✔✔How does
the size of margin of error effect the confidence interval?
larger n = smaller SE(p^) = smaller ME = smaller interval
smaller n = larger SE(p^) = larger ME = larger interval - correct answer ✔✔What are the effects
of sample size on the Margin of Error
Null = Ho: states that nothing has changed
, Alternative = Ha: states the population parameter has changed in some way - correct answer
✔✔What is the Null hypothesis and The Alternative Hypothesis?
the hypothesized value of p - correct answer ✔✔what does Po stand for?
You reject Ho when Ho is actually true - correct answer ✔✔What is a type 1 error?
Accepting Ho when Ho is false - correct answer ✔✔What is a type 2 error?
Rejecting Ho: sufficient evidence
Accepting Ho: insufficient evidence - correct answer ✔✔What does it mean to reject Ho and
accept Ho?
the PROBABILITY of getting sample data at least as contradictory to the null as you got, if the
null were in fact true - correct answer ✔✔What does the P value measure?
We reject Ho. sufficient evidence that Ha is true - correct answer ✔✔P-value < a
Accept Ho. Insufficient evidence that Ha is true. - correct answer ✔✔P-value >= a
1. independence
2. randomization
3. 10% condition
4. Sample size - correct answer ✔✔What are the conditions of the normal model?
accept Ho. Insufficient evidence to support Ha. P-value > a - correct answer ✔✔conclusion
when Ho is inside an interval?
