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All Chapters (Chapter 6 Vocabulary terms (unit normal table (finding…
All Chapters
Chapter 6 Vocabulary terms
probability
random sample
sampling with replacement
unit normal table
finding probability from <-
1) sketch the distribution
2)transform the X value to a z-score
3)find the appropriate proportion from the unit normal table
percentile rank
percentile
binomial distribution
Chapter 7 vocabulary terms
sampling error
distribution of sample mean
central limit therom
expected value of M
standard error of M
law of large numbers
Chapter 8
one tailed test( H0 and H1)
and increase or decrease within the population mean
1) the directional prediction is incorporated into the statement of the hypotheses.
2) the critical region is located entirely in one tail of the distribution.
Hypothesis Test
uses sample data to evaluate a hypothesis about a population
The distribution of sample means is normal (there are two reasons)
Reasons
(1)The population from which the samples are selected is normal.
(2)The size of the samples is relatively large (around 30 or more)
Parameters of the distribution of sample means
1) shape
2) central tendancy
3) variability
Standard error of M
measures the distance between the sample mean and population mean
Normal Distribution
