Statistics Questions
Explore questions in the Statistics category that you can ask Spark.E!
Distribution is left skewed if tail is on the _____
What are two categories of the critical values approach for tests of the population mean?
Chant used to help remember for which study the calculated value has to be higher or lower (or equal to) then the critical value
Test used for correlation study with nominal level data
What distribution does SAMPLE alpha and beta follow
Does covariance or correlation depend on units of measurement?
what is more informative : confidence intervals or point estimate?
Test used for correlation study with ordinal level data
Test used for an independent measures experiment with nominal level data
Test used for independent measures experiment with ordinal level data
Test used for repeated measures or matched participant experiment with nominal level data
Test used for repeated measures or matched participant experiment with ordinal level data
Test used for independent measures experiment with Interval or Ratio level data
Test used for repeated measures or matched participant experiment with interval or ratio level data
example 10.5 what do you think is more important - to protect the right of Americans to own guns or to control gun ownership? when asked this question, 46% of all Americans said protecting the right to own guns is more important. the pew research center surveyed 1267 randomly selected Americans with at least a bachelors degree and found that 549 believed that protecting the right to own guns is more important. does this result suggest the proportion of Americans with at least a bachelors degree feel differently than the general American population when it comes to gun control? use the theta= 0.1 level of significance
is a procedure, based on sample evidence and probability, used to test statement regarding of characteristic of one or more populations
example 10.3 the Medco pharmaceutical company has just developed a new antibiotic for children. 2% of children taking competing antibiotics experiments headaches as a side effect. a researcher for the food and drug administration wishes to know is the percentage of children taking the new antibiotic who experience headaches as a side effect is more than 2%. the researcher conducts a hypothesis test with H0: p= 0.02 and H1: p > 0.02. suppose that the sample evidence indicates thata.) the null hypothesis is rejected. state the conclusion b.) the null hypothesis is not rejected. state the conclusion
denoted H0, is a statement to be tested. is a statement of no change, no effect, or no difference and is assumed to be true until evidence indicates otherwise
reality and conclusion chart for 4 outcomes
denoted H1, is a statement that we are trying to find evidence to support