(-1)+(-5)+8+(-6)
total number of numbers= 4
total sum= -4
average/ answer= -4/4= -1
Answer:
14.29
Step-by-step explanation:
14:98*100 =
(14*100):98 =
1400:98 = 14.29
Answer:
For 99% of confidence interval is 67.5±1.3524
Step-by-step explanation:
Given:
Mean height =67.5 inches
Standard deviation:2.1 inches
Z at 99%.
No of samples 16.
To find:
confidence interval
Solution:
We have formula for confidence interval,
=mean ±Z*{standard deviation/sqrt(no.of observation)}
Now
Z=99%
has standard value as ,
Z=2.576
Confidence interval= mean±Z{standard deviation/sqrt(No. of samples)}
=67.5±2.57{(2.1/sqrt(16)}
=67.5±2.576(2.1/4)
=67.5±1.3524
Answer: x = 13/5
Explanation:
(x+4)/(3x+1) = 3/4
Cross multiply:
4(x+4) = 3(3x+1)
4x + 16 = 9x + 3
4x - 9x = 3 - 16
-5x = -13
x = -13/-5
x = 13/5
Given:
ft and 
ft.
To find:
The value of P.
Solution:
We have,
Substituting and , we get
Taking LCM, we get
Therefore, the value of P is 
ft.
