Answer:
(25.732,30.868)
Step-by-step explanation:
Given that in a random sample of 42 people, the mean body mass index (BMI) was 28.3 and the standard deviation was 6.09.
Since only sample std deviation is known we can use only t distribution
Std error = 

t critical for 99% two tailed 
Margin of error
Confidence interval lower bound = 
Upper bound = 
Answer:
D
Step-by-step explanation:
-2 = 3(-1) +1
-2 = -3 + 1
-2 = -2
Answer:
38.29 i think
Step-by-step explanation:
X+11=3
-11 -11
x=-8
you subtract 11 from both sides. then you got the answer.