Answer:
15
Step-by-step explanation:
32-19 = 13 that have both
70-57= 13 that have both again from that sample
total number of people that have both : 13 + 13 = 26
11 kids don't have either one, so :
26-11 = 15
Answer:
1.178
Step-by-step explanation:
(for Jamal)
5 x 2 = 10
6 x 3 = 18
7 x 2 = 14
8 x 1 = 8
10 x 1 = 10
Mean: 10 + 18 + 14 + 8 + 10 = 60/9 = 6.6
6.6 - 5 = 1.6 x 2 = 3.2
6.6 - 6 = 0.6 x 3 = 1.8
7 - 6.6 = 0.4 x 2 = 0.8
8 - 6.6 = 1.4
10 - 6.6 = 3.4
<em>Mean Absolute Deviation:</em> 3.2 + 1.8 + 0.8 + 1.4 + 3.4 = 10.6/9 = 1.178
We are given with the equation y"+ 9 y = t^2 * e^3 t + 6 and asked to determine the general solution to this equation. we convert the equation into r^2 + 9 = 0. The solution to this equation is r = +/- 3i. This solution converted to trigonometric function is equivalent to <span>y</span>= <span>C1 </span>cos3t + <span>C2 </span>sin<span>3t. </span>
Answer: x=0,7
Step-by-step explanation:
Answer:
(351.04, 368.96)
Step-by-step explanation:
Given that population mean= 360
Std devitaion = 4
margin of error = 2.5%= 0.025
Since population std deviation is known we can use Z critical value
For two tailed critical value for 2.5% would be
2.24
Margin of error = ±Critical value*std deviation
= ±2.24(4)
= ±8.96
Confidence interval =(Mean - margin of error, mean + margin of error)
=
