6- Probability

Question 1

Probability

Answer 1

used to predict the type of samples that are likely to be obtained from a population (connection between samples and population)

Question 2

random sampling

Answer 2

requires that each individual in the population has an equal chance of being selected (1/17) take one marble out (1/16)

Question 3

independent random samping

Answer 3

each individual has an equal chance of being selected and that the probability of being selected stays constant from one selection to the next

Question 4

describe unit normal table

Answer 4

column A: lists z-score values
column B: the body
column C: the tail
column D: proportions between mean and z-score

Question 5

if an individual in the sample have scores around the original population mean, then we must ________________

Answer 5

if an individual in the sample have scores around the original population mean, then we must conclude that the treatment appears to HAVE NO affect

Question 6

if an individual in the sample have scores that are significantly different then original population mean, then we must ________________

Answer 6

if an individual in the sample have scores that are significantly different then original population mean, then we must conclude that the treatment appears to HAVE AN affect

Question 7

how do you know what is “significantly different” from the pop mean?

Answer 7

if they are past the critical region of the end 5% on either side
(-1.96, and 1.96) EXTREME 5