Chapter 7 Review
1. What is a sampling distribution? Distribution of sample means?
2. What information/characteristics about a distribution of sample means does the Central
Limit Theorem provide?
3. The distribution of sample means is not always a
Assignment 2: Project
By Week 4, Day 6, submit this to the M4 Assignment 2 Dropbox.
Submit the first draft of your survey that would be included in your research prospectus.
Be sure to format the draft as if the survey would be self-administered (i.e., on
Here,the age of 40 does not matter as we need to find the reserve needed when the insured
attains the age of 50.Assuming that the insured attained the age of 50,the insurance can be
represented as a combination of two contracts with level payments,
The assignment is about read a CHAPTER 6:
CREATING QUALITY LEARNING ENVIRONMENTS.
Then Required: answer question 3 and Choose one other question from #1or2 to answer
it. (choose one as you want)
Visit (and take pictures if possible) of a classroom for
Introduction to Hypothesis
you hear the word
hypothesis, what comes to mind?
More specifically, proposed
explanation, outcome, or
prediction (typically based on
about hypothesis testing?
Z-Scores: Location of Scores and
an individual score have
mean and standard
deviation to determine position
about comparing scores from
Probability and Samples: The
Distribution of Sample Means
Populations & Samples
Z-score of sample
of many samples, how do we
tell which sample is a better
representation of the population?
PSY 2073 Statistics for Psychology
Exam 2 Study Guide
What are z-scores?
Why do we use z-scores?
What changes (shape, central tendency, and variability) occur
when transforming a distribution of scores into a z-score
Be able to
Proportion (or fraction)
of all possible outcomes
Probability of X = # of outcomes
classified as X / Total # of possible
Example: Jar of marbles
Fractions, decimals, or percentages
MUST SHOW WORK
YOU MUST SHOW YOUR WORK TO RECEIVE FULL CREDIT.
Using the TI84 Calculator to Compute Confidence Intervals:
- For a confidence interval about a population proportion, use STAT > TESTS > 1-PropZint (Test A)
- For a confidence i