Chapter 7.4-8

Question 1

H0

Answer 1

Null hypothesis, what we assume to be true

Question 2

HA

Answer 2

Alternative hypothesis, what we are looking to see if there is potential evidence for

Question 3

When asked if there is convincing evidence for/against something…

Answer 3

do a four step hypothesis test

Question 4

State stage

Answer 4

define H0, HA, alpha level, and parameters

Question 5

Plan stage

Answer 5

state what test you will perform, test the conditions

Question 6

Do stage

Answer 6

Calculate test statistic and p-value (either by hand or using test on calculator)

Question 7

Conclude stage

Answer 7

Write a conclusion including your p-value, alpha level, your conclusion, and context

Question 8

Conclusion sentence frame

Answer 8

Because our p-value of X is greater/less than our alpha level of 0.05, we reject/fail to reject H0. We do/don’t have convincing that (HA in context)

Question 9

Small p-value is evidence to…

Answer 9

reject H0

Question 10

Large p-value is evidence to…

Answer 10

not reject H0

Question 11

Lower alpha level ensures…

Answer 11

we don’t reject we shouldn’t, more conservative

Question 12

Type I error

Answer 12

occurs when we reject H0 but H0 is actually true

Question 13

Probability of Type I error

Answer 13

is equivalent to the alpha level

Question 14

Type II error

Answer 14

occurs when we fail to reject H0 but H0 is actually false

Question 15

If it’s an experiment…

Answer 15

checking independence/10% condition is unnecessary, use p-hat-c in place of parameter(s)

Question 16

If conditions are not met…

Answer 16

results of a simulation will be given. Find probability of sample statistic from simulation (p-hat/times simulation was run)