Answer:
136
Step-by-step explanation:
2 triangles (front and back): 2 x 1/2 x 6 x 4 = 24
2 rectangles (on both sides) : 2 x 5 x 7 = 70
1 base rectangle: 7 x 6 = 42
total : 24 + 70 + 42 = 136
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2 answers:
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Answer:
The Sample Size Need To be at least 114
Step-by-step explanation:
According to the Question,
- Given, A university dean of students wishes to estimate the average number of hours students spend doing homework per week. The standard deviation from a previous study is 6.2 hours.
The Maximum Error(E) is given as 1.5 hours and the standard deviation(σ) is 6.2 hours.
- Now, For 99% Confident the level of value α is 0.01.
α/2 = 0.01/2 ⇒ 0.005
- Thus, From The table, We get that the value of
is 2.58.
Hence, the sample size n can be found as
n = {}²
n = {2.58 × 6.2}² / 1.5²
n = 113.72 .
So, The Sample Size Need To be at least 114.
Answer:
The value of n is 1
Step-by-step explanation:
Given the expression
In other to solve for n we have to perform a series of step wise operations as follows
collecting like terms we have
The negative signs will council out on both sides we have
Dividing both sides by 2 we have
n=