Answer:
a) sample size is 40
Step-by-step explanation:
(a)
minutes
Margin of error, E is 75 seconds E=75/60= 1.25 minutes.
The level of significance 
for 95% level of significance
For 95% confidence interval 
from standard deviation table
Sample size required, n
Rounding off, n=40
Sample size =40
Keywords:
95% confidence, sample size, Wall Street Journal
Answer:
The smallest number n could be is 64.
Step-by-step explanation:
35 + 64 = 99
64/8 = 8
= √289 = 17
For this case what we should do is take into account the following conversion:
We then have the following number:
Applying the given conversion we have:
By doing the corresponding calculation we have that the standard form is given by:
Answer:
4540 million in standard form is:
Answer: 70 cubic feet
Step-by-step explanation:
Hi, to answer this question we have to apply the formula of a rectangular prism.
V = length x width x height
Since the area of a rectangle is : A = length x width
So, the volume is also:
Volume = area x height
Replacing with the values given and solving for V:
V =35 ft2 x 2 ft = 70 cubic feet
Feel free to ask for more if needed or if you did not understand something.
Answer:
See Below
Step-by-step explanation:
1: -9 Take the Square Root of 81 and then multiply by -1.
2: +- 1/3 1/3 *1/3= 1/9
3: -1 -1*-1*-1 = -1
Have a Great day!
