Data
Age groups (ages 12-17, 18-23, ...) can be classified as (categorical or quantitative)
What is categorical
this is the probability of rolling a 3 on a fair die
what is 1/6
this is the distribution of sample means of size n from a population
what is the sampling distribution
what is fail to reject the null hypothesis
SOCS stands for
what is shape, outliers, center, and spread
What is a response variable
this is also known as the mean outcome for infinitely many trials
what is expected value
the 10% rule is used to check this condition
there is no difference in the distribution of a categorical variable for several populations or treatments
what is the null hypothesis for a ch-square test for homogeneity
when you are performing a simulation or experiment, this is what does happen given the trials
what is empirical probability
this measure of center is resistant
what is median
this is the probability that an event does not occur
what is the probability of a complement
this says that when n is large, the sampling distribution of the sample mean is approximately normal, no matter what shape your population is
what is central limit theorem (CLT)
when conducting a significance test for means, if we don't know the population standard deviation the new test statistic is called this
what is a t-statistic
this is the formula for subtracting 2 standard deviations
what is the square root of standard deviation X squared plus standard deviation Y squared
Ratio of a joint relative frequency and related marginal relative frequency
what is conditional relative frequencies
this is the calculator function for when you are asked to find the probability of flipping a "tails" on a coin on the 5th attempt
the shape of the sampling distribution depends on the shape of the population distribution in this type of sampling distribution
what is sample means
these degrees of freedoms create t-distributions that are closer to the standard normal distribution
what is larger degrees of freedom
in a chi-square test for homogeneity, data should be collected in this way
what is a stratified random sample
this percent of the distribution is between 1 standard deviation below the mean and 2 standard deviations above the mean
what is 81.5%
A and B are independent events for which P(A)=0.2 and P(B)=0.5. P (A or B) equals
what is 0.6
In 2022, more than 5.6 million homes were sold in the US. About 19% of these homes sold for above market value. In your twon, 120 homes sold in 2022. What is the probability, that of those 120 homes, more than 20 homes sold for above market value?
what is 0.7418
A significance test was performed to test the null hypothesis H0: p=0.8 vs the alternative Ha: p<0.8. The test statistic is z=-1.77. the p-value for this test is
what is 0.0384
this is the probability of correctly rejecting the null hypothesis
what is power