Refer to the appliedpsychology in criminal justice (sept. 2009) study of thepersonality characteristics of convicted drug dealers, exercise 7.17 (p. 352). a random sample of 100 drugdealers had a mean wanting recognition (wr) score of39 points, with a standard deviation of 6 points. recallthat the wr score is a quantitative measure of a person’s level of need for approval and sensitivity to socialsituations. (higher scores indicate a greater need for approval.) a criminal psychologist claims that the range ofwr for the population of convicted drug dealers is 42 points. do you believe the psychologist’s claim? (hint: assume the population of wr scores is normally distributed.)

sin3a=12/15

step-by-step explanation:

since one side was multiplied by 3 the other side must also be multiplied by 3.

1 1/5

step-by-step explanation:

, and

for

step-by-step explanation:

we can analyze the pattern at which the terms increase. let us denote , , , so that we can call

note the following:

the pattern: to get the next term value, we just add the next term number (e.g. 1st, 2nd, to the previous term value (term values are the given numbers in the question, 1, 3, 6, 10, 15,

from , to get to , we add

from , to get to , we add

etc.

we need to form a recursive formula, a formula that has the next term as a function of the previous term. so a possible recursive formula can be

, and for

it is 10.6 according to my calculations