X in (-oo:+oo)
x+5/12 = 5/8 // - 5/8
x+5/12-(5/8) = 0
x+5/12-5/8 = 0
x-5/24 = 0 // + 5/24
x = 5/24
x = 5/24
E^7 = y --->(Add ln on both sides) lne^7 = ln y ---> (Bring down the power) (7)×lne = ln y ---> ( lne = 1 ) 7 = ln y
Answer:
1. 4+2d
2. 3k+20
Step-by-step explanation:
Answer:
B. 434
Step-by-step explanation:
sorry for the late response! it’s 434. I worked out the problem & took the test, B is the correct answer.
Answer:
The minimum sample size needed is 
. If n is a decimal number, it is rounded up to the next integer. 
is the standard deviation of the population.
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 Z-table as such z has a p-value of 
.
That is z with a pvalue of 
, so Z = 1.645.
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.
How large a sample must she select if she desires to be 90% confident that her estimate is within 4 ounces of the true mean?
A sample of n is needed, and n is found when M = 4. So
The minimum sample size needed is . If n is a decimal number, it is rounded up to the next integer. is the standard deviation of the population.
