$256/4 hrs = 64 hrs
3 hrs x $64 = $192
2 hrs x $64 = $128
$256 + $192 + $128 = $576
Or
(4+3+2) x $64 = $576
9 x $64 = $576
He is making 78 percent of his shots so he has a 78 percent chance
Answer:
Step-by-step explanation:
9x⁴ – 2x² – 7 = 0
Let's say that u = x²:
9u² – 2u – 7 = 0
Factor:
(u – 1) (9u + 7) = 0
u = 1, -7/9
Since u = x²:
x² = 1, -7/9
x = ±1, ±i √(7/9)
Answer:
$37.5
Step-by-step explanation:
50× 25% = 12.5
50-12.5 = 37.5
Answer: (17.42, 20.78)
Step-by-step explanation:
As per given , we have
Sample size : n= 9
years
Population standard deviation is not given , so it follows t-distribution.
Sample standard deviation : s= 1.5 years
Confidence level : 99% or 0.99
Significance level : 
Degree of freedom : df= 8 (∵df =n-1)
Critical value : 
The 99% confidence interval for the population mean would be :-


Hence, the 99% confidence interval for the population mean is (17.42, 20.78) .