Please help me thanks.
2 answers:
You might be interested in
The expression that represents well the <em>geometric</em> sequence is and the value of the <em>fourth</em> term is 64. (Correct choice: B)
<em>Geometric</em> sequences are <em>exponential</em> expressions with discrete domain, whose form is presented and explained below:
, where a, r are <em>real</em> numbers and n is a <em>natural</em> number. (1)
Where:
- Value of the starting term.
- Common ratio of the series.
According to the statement, we know that the first term of the <em>geometric</em> sequence is 8 and between any two <em>consecutive</em> terms there is a <em>common</em> ratio of 2. If we know that a = 8, r = 2 and n = 4, then the fourth term of the series by means of (1) is:
f(4) = 8 · 8
f(4) = 64
The expression that represents the <em>geometric</em> sequence is and the value of the <em>fourth</em> term is 64.
To learn more on geometric sequences: brainly.com/question/11266123
#SPJ1
Answer:
There is no sufficient evidence to suggest that the relaxation exercise slowed the brain waves
Step-by-step explanation:
Given that in a experiment on relaxation techniques, subject's brain signals were measured before and after the relaxation exercises with the following results:
The population is normally distributed
This is a paired t test since sample size is very small and same population under two different conditions studied.
(Right tailed test)
Alpha = 5%
x y Diff
32 26 6
38 36 2
66 59 7
49 52 -3
29 24 5
Mean 3.4
Std dev 4.037325848
Mean difference =
n =5
Std deviation for difference =
Test statistic t = mean difference / std dev for difference
=
p value =0.132
Since p >0.05 we accept null hypothesis.
There is no sufficient evidence to suggest that the relaxation exercise slowed the brain waves