Answer:
The 90% confidence interval for the mean score of all takers of this test is between 59.92 and 64.08. The lower end is 59.92, and the upper end is 64.08.
Step-by-step explanation:
We have that to find our 
level, that is the subtraction of 1 by the confidence interval divided by 2. So:
Now, we have to find z in the Ztable as such z has a pvalue of 
.
So it is z with a pvalue of 
, so 
Now, find the margin of error M as such
In which 
is the standard deviation of the population and n is the size of the sample.
The lower end of the interval is the sample mean subtracted by M. So it is 62 - 2.08 = 59.92
The upper end of the interval is the sample mean added to M. So it is 62 + 2.08 = 64.08.
The 90% confidence interval for the mean score of all takers of this test is between 59.92 and 64.08. The lower end is 59.92, and the upper end is 64.08.
The gross income multiplier (GIM) is the ratio of sale price to annual rental income. Here, you have ...
GIM = $350,000/(12*2*$1400) ≈ 10.4
Answer:
Step-by-step explanation:
I used this equation formula and just input the numbers given:
Where
P= final population
= original population
r = rate of growth
t = time
Hope this helps!
Answer:
C) ∠R
Step-by-step explanation:
they both have two marks, meaning they are congruent
Volume = l*b*h
1. Ans 24 unit cubes
Because it had 6 unit cubes as length, 2 unit cunes as breadth and 2 unit cubes as height.
2. Volume = l*b*h
= 30*15*4
=1800 cubic feet
