Are these correct? Why?
There is a 95% chance that the true proportion is between 42.7% and 51.3%.
No, the population parameter is fixed and does not vary
Describe what kind of probability the p-value stands for.
The probability of getting results at least as unusual as the observed statistic, given that the null hypothesis is true.
Who won the Super Bowl this year?
Seattle Seahawks
"In 95% of samples of US adults, the proportion who think marijuana should be decriminalized will be between 42.7% and 51.3%"
No; the confidence interval is about the true proportion, not sample proportions
What is another name for the alpha level?
The significance level
In the northern hemisphere, what do we call the day with the most sunlight of the year?
Summer Solstice
"Between 42.1% and 61.7% of sea fans are infected"
No; this suggests that the proportion cannot be outside when there is a chance it can be
The level alpha is the probability of what happening?
A Type I error happening
A type of animal has been observed to never die from old age, being the closest animal to be immortal. What kind of animal is this?
Jellyfish
"I'm 95% confident that the sample proportion is between 42.1% and 61.7%."
What is the power of a hypothesis test?
The probability of rejecting a null hypothesis that is actually false
What president served the shortest term before his death?
William Henry Harrison
"I'm 95% confident that between 42.1% and 61.7% of the sea fans on the Las Redes Reef are infected."
Yes
What is the effect size of a hypothesis test?
The difference between the value in the data and the null value
Valentine's Day is named after St. Valentine from the Catholic church. In what year did he die?
273 AD