Calculator Functions
What do you use to find the exact successes in a binomial setting?
What is "binompdf"?
What is the Z-score formula?
z = x-u / SD
What is a statistic?
A numerical summary of a sample.
What is the first step of the 4C Method?
What type of test and parameter and statistic?
0.5
How do you find the area of an interval in a normal distribution?
What is "normalcdf"?
What is SD?
SD = sqrt(sum of (x-u)^2*P(x)
What is a parameter?
A numerical summary of a population?
A sentence that states whether evidence supports the null hypothesis belongs in this step.
What is the conclusion?
A bag has 3 red marbles, 5 green marbles, 2 blue marbles. What is the probability of getting a green marble and a red marble in two draws.
1/6
What is 1-PropZInt used for?
To calculate a confidence interval to estimate a single proportion?
Margin of Error Formula
ME = (critical value)(SD)
What is a probability?
A long run proportion of times an event occurs.
What are the 3 rules you need to check?
Random sample, 10% and large counts
If 70% of students pass the AP Stats test, how many of 200 students would pass.
140 people
What is the T-test?
To test a claim made about a single mean.
What is the confidence Interval Formula
Statistic +- (critical value)(SD)
What is a simple random sample?
A sampling method where every possible sample of a given size has an equal chance of being selected.
n <= 0.10N
A sample proportion is p = 0.6 and n = 100. Find the SD.
0.049
How do we find the Chi square goodness-of-fit test
What is "x^2-test"?
Sampling distribution of sample proportion SD formula?
SD = sqrt(p(1 - p) / n
The probability of getting results at least as extreme as the observed results assuming the null hypothesis is true?
What is the large counts formula?
np >= 10 and n(1-p) >= 10
A coin is flipped 3 times. What is the probability of exactly 2 heads?
3/8