The average salary of teachers rose from $8,626 in 1970 to $33,084 in 1990. What is the price at time 2 using CPI and what does that mean?2 What would price of rent be in 2000 dollars for a $560 apartment in 1990?3 What is the rate of inflation for the decade 1960?4 What is the difference between a z-test and a t-test?5 A teacher claims that the mean score of students in his class is greater than 86. with a standard deviation of 15. If a sample of 100 students was selected with a mean score of 92 then check if there is enough evidence to support this claim at a 0.05 significance level.6 What do we know?7 Write the hypotheses.8 What is critical value?9 Draw Graph.10 Calculate t or z.11 Compare, Decision, Interpretation.12 In the population, the average IQ is 100. Psychologists want to see if eating breakfast has an effect on intelligence. A sample of 40 participants who ate breakfast that morning has an average IQ of 130 and with a standard deviation of 15. Did eating breakfast affect intelligence? Alpha of .0512 What do we know?13 Write the hypotheses.14 What is critical value?15 Draw Graph. 16 Calculate t or z.

15. The average salary of teachers rose from $8,626 in 1970 to $33,084 in 1990. What is the price at time 2 using CPI and what does that mean? A v