Answer:
21
Step-by-step explanation:
when p is 4
p² + 5 = 4² + 5
16 + 5 = 21
ANSWER: 219.375
subtract the second day from the first day.
547.250-327.875=219.375
Answer:
3.784
Step-by-step explanation:
Answer:
V = 972π cubic inches :)
Step-by-step explanation:
The formula for the volume of a sphere is
V = (4/3)πr3
If the diameter is 18 inches, then the radius is 9 inches. Substituting 9 in for r gives us a volume of:
V = (4/3)π(9)3
V = (4/3)π(729)
V = 972π cubic inches
Hope this helps!
Answer: (143.07, 158.93)
Step-by-step explanation:
The formula to find the confidence interval is given by :-
where n= sample size
= Sample mean
z* = critical z-value (two tailed).
= Population standard deviation
We assume that the underlying population distribution is normal.
As per given , we have
n= 108
Critical value for 99% confidence level = 2.576 (By using z-table)
Then , the 99% confidence interval for the population mean hours spent watching television per month :-
Hence, the required 99% confidence interval for the population mean hours spent watching television per month. = (143.07, 158.93)