Response below in a true or false:
If in a probability distribution you got the sum of probabilities less than one, it may mean that you skipped some possible outcome/outcomes.
Health insurance policies are set up in such a way that a healthy person has a negative expected value, and a sickly person has a positive one.
If a distribution curve is bell-shaped, then this is a normal distribution.
If a distribution is normal, its curve is bell-shaped.
A normal distribution curve may be symmetric, left-skewed, or right-skewed.
Because the tails of the normal distribution curve are infinitely long, the total area under the curve is also infinite.
The higher the confidence level, the narrower the confidence interval.
A good way to decrease a confidence interval is to bring down the confidence level.
A good way to decrease a confidence interval is to increase the sample size.
Of the above question the first one never results in a greater sample size than the second formula.
A pre-election survey showed that Candidate A got 52%, and Candidate B got 48%. The margin of error is 3%. There is not enough reason for Candidate A to rejoice.