An experimental psychologist believes that memory for words is superior to memory for pictures. To test this hypothesis, the psychologist uses eight subjects selected from an introductory psychology class. Each student's memory is tested after viewing both 15 words and 15 pictures. The numbers of items of each type that each participant remembers are recorded. What is the value of n in the study described above

11

step-by-step explanation:

32.50-7.50=25

225/25=11

step-by-step explanation:

part a. the differences are decreasing, so we know the sequence is not arithmetic. the ratios are constant (=3/4), so we know the sequence is geometric.

part b. from part a, we know the common ratio is 3/4, so each term is 3/4 of the one before. the initial term is the number of gallons at h=1.

g[h] = (3/4)·g[h-1]

g[1] = 384 . . . . initial value required for a recursive definition

part c. the general formula for a geometric sequence is

a[n] = a[1]·r^(n-1)

we have a[1] = 384, r = 3/4, and the term number given by h. the formula that follows is

g[h] = 384·(3/4)^(h-1)

part d. filling in the value and doing the arithmetic, we have

g[12] = 384·(3/4)^11 ≈ 384·0.042235136 ≈ 16.2183 . . gallons

part e. each gallon is 4 quarts, so

16.2183 gal × 4 qt/gal = 64.8732 qt

t

step-by-step explanation:

ever thing time 1 is a multiply by 1 it get  

step-by-step explanation:

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