Answer:
Number of students ; 60
Explanation:
Using the formula for p +- z * Sqrt ( pq/n )
Let us first calculate the Margin of Error
= 0.816 –0.7 = 0.116
•z* = 1.96
P = (0.584 + 0.116 ) = 0.7
Q = 1- p = 1 – 0.7 = 0.3
Now inserting the values in the formula; we get
0.116 = 1.96 x sqrt { ( 0.7 x 0.3) / n }
Solving the above equation
N = 60 (rounded off to nearest number)
Hence the number of students that were selected by the environmental teacher in the sample is 60
Answer:
question a and b on what ?
Explanation:
The answer lies in China’s five-year plans. Inspired by the Soviets, the Chinese focused on heavy industry and slowly developed their economy. With each subsequent five-year plan, the government improved the country’s industrial and service output and liberalized the economy.
B
Functional mean, of or having a special activity, purpose, or task; relating to the way in which something works or operates.
First step: Convert 24kg to Newtons by multiplying by gravity, or 9.8.
You get 235.2 N
Next: F = m*a
If you draw a free body diagram, you will notice that the Net Force is equal to the Applied Force minus the Frictional Force.
Frictional Force is Ff = μ * Fn
Ff = .23 * 235.2
585 - 54.096 = 24*a
530.904 = 24*a
a = 22.121 m/s
Let me know if any of this doesn't make sense.
