Step-by-step explanation:
Mean = 81740
Standard deviation = 4590
Sample size = 15
Alpha level = 1-0.95 = 0.05
Df = 15-1 = 14
Critical value:
alpha/2 = 0.05/2 = 0.05
t0.025
t critical value = 2.145
Margin of error ME
2.145 x 4590/√15
2.145 x 4590/3.873
ME = 2542.09
Confidence interval
Lower CI = mean - ME
= 81740-2542.09
= 79197.91
Upper CI = mean + ME
= 81740+2542.09
= 84282.09
[ 79197.91, 84282.09]
B.
Using excel, exact answer for CI
Lower limit = 79198.142724212173
Upper limit = 84281.8572757827
C.
The assumptions to be made from the population are that
1. Samples are random
2. These samples are gotten from an approximately normal distribution
Answer:
0.44
Step-by-step explanation:
2/3 - 2/9 = 0.44
Answer:
is the question g inverse ??
i have answered for g inversed
g(x)=3x-7
y=3x-7
interchanging the value of x and y
x=3y-7
(x+7)/3=y
g-1(x)=(x+7)/3
so g-1(2)=(2+7)/3
=9/3
=3
therefore 3 is the answer
Step-by-step explanation:
Answer:The cost for zachs lunch is 12$, and the cost for brins is 8$
Step-by-step explanation:
