Answer:
(5.240 ; 8.760)
Step-by-step explanation:
Given :
Sample mean, xbar = 7
Standard deviation, s = 2.29
Sample size, n = 9
95% confidence interval for the population mean :
Confidence interval :
Xbar ± Margin of error
Margin of Error = Tcritical * s/sqrt(n)
Tcritical at 0.05 ; df = 8 = 2.306
Margin of Error = 2.306 * 2.29/sqrt(9)
Margin of Error = 1.760
Lower boundary = (7 - 1.760) = 5.240
Upper boundary = (7 + 1.760) = 8.760
(5.240 ; 8.760)
Multiply the exponents.
So 10 ×4/5=
40/5
=8
Thus (243k^10)^4/5 is 243k^8
Answer:
5 cm
Step-by-step explanation:
Area = length x width
40 = 8 x w
40/8 = w
5 = w
Answer:
y = 
Step-by-step explanation:
Answer:
$514.50
Step-by-step explanation:
7+4+2+8=21
$12.25x21=$514.50
