A certain type of oak tree has a mean growth of 14.3 inches in 4 years. A forestry biologist believes that a new variety will have a different mean growth during this same length of time. A sample of 16 trees of this new variety are studied. If it is found that the mean growth is 15.4 inches with a sample standard deviation of 1.8 inches. Is the biologist correct

see explanation

step-by-step explanation:

since the sequence is geometric there is a common ratio r between consecutive terms, that is

r = 4 ÷ - 2 = - 2

r = - 8 ÷ 4 = - 2

r = 16 ÷ 8 = - 2

the next term - 13 must be incorrect as it should be - 32 for the sequence to be geometric.

the first 4 terms are therefore geometric with common ratio r = - 2

from the figure we get,

the x axis shows   the months and,

the y-axis shows the number of satisfied customer.

each line or each cell in upward direction (y-axis) shows 500.

the appropriate scale for the y - axis is: -

a = 2000 customers

b = 4000 customers

c = 6000 customers

d = 8000 customers

e = 10000 customers

f = 12000 customers

g = 14000 customers

17.08

correct me if i am wrong.

faster, im not sure why but i know it is faster