WorksheetsStatistics and Probability Unit III
Total questions: 10
Worksheet time: 20mins
A ____________ is a conjecture about a population parameter.
Statistical hipotesis
Statistical variable
Linear regression
Discrete probability distribution
There are two types of statistical hypotheses for each situation:
Null Hypothesis
Alternative Hypothesis
Equal Hypothesis
Change Hypothesis
Non-probabilistic Hypothesis
When you have a right-tailed test, the H1 has to use the symbol:
It has to use =
It has to use =
It has to use >
It has to use <
A __________ uses the data obtained from a sample to make a decision about whether the null hypothesis should be rejected.
statistical test
statistical hypothesis
statistical parameter
statistical comparison
A ________ error occurs if you reject the null hypothesis when it is true
type I
type II
type III
correct decision
The _________ is the maximum probability of committing a type I error.
level of significance
admitted error
level of error
confidence
It separates the critical region from the noncritical region.
Critical value
Rejection value
Comparison value
Border value
When test a hypothesis, the 4th step is to make a decision if reject or not reject the null hypothesis. To perform that activity you should compare the computed value against the critical value(s). What does it happen when the comparison is true?
Reject the null hypothesis
Not reject the null hypothesis
Occurs an error type I
Occurs an error type II
A __________ is a graph of the ordered pairs of numbers consisting of the independent variable and the dependent variable.
Scatter Plot
Histogram
Ogive
Bar chart
It means that the sum of the squares of the vertical distances from each point to the line is at a minimum.
Line of best fit
Correlation Coefficient
Scatter Plot
Equation of regression line
