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# Statistics - Exam 4

Probability of rejecting the null hypothesis when in fact the null hypothesis is true level of significance
Denoted by a (alpha) level of significance
If a (alpha) is not given use: .05
_______ is a test or statement about a population parameter such as mean, and it must contain the condition of equality. null hypothesis
______ is denoted by H0 null hypothesis
_______ is a test or statement about a population parameter and tests for a significant change alternative hypothesis
_______ is denoted by H1 alternative hypothesis
Psychology, education, sociology and athletics are more likely to use a _______ alpha larger
Medical professions and engineering are more likely to use a _______ alpha smaller
Set of values of the test statistic that leads to the rejection of the null hypothesis critical region
Value that separates the critical region from the non-critical region critical value
Value computed from the sample data ; used to determine whether to reject the null hypothesis or not test statistic
Probability of getting a sample statistic (such as the mean) or more extreme value in the direction of the alternative hypothesis when the null hypothesis is true p-value
if p-value is less than or equal to alpha then ________ reject the null hypothesis
if p-value is greater than alpha then ________ do not reject the null hypothesis
A very small p-value indicates a ________ of the null hypothesis strong rejection
complete collection of people, objects, scores, etc. to studied population
any sub collection of data drawn from a population sample
value measuring some characteristic of a population parameter
value measuring some characteristic of a sample statistic
proportion of a population symbol p
mean of a population symbol µ (mu)
variance of a population symbol σ²
standard deviation of a population symbol σ
variance of a sample symbol
standard deviation of a sample symbol s
mean of a sample symbol x bar
proportion of a sample symbol p hat
What tells the researcher how confident he or she is with the final conclusion? p-value
Created by: K1N1V
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