What exactly do you need help with?
Answer:
9 in. to 5 in.
or 9/5
Step-by-step explanation:
6 ft=6*12=72 in.
6 ft/ 40 in.=72/40=9/5
9 in. to 5 in.
0.003 is 1/10 of 0.03.
Just multiply the 0.003 by 10 and you'll get the answer.
Answer:
We need at least 4238 scores.
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
In which 
is the standard deviation of the population and n is the size of the sample.
How many random IQ scores must be obtained if we want to find the true population mean (with an allowable error of 0.5) and we want 97 percent confidence in the results
We need at least n scores, in which N is found when 
. So
We need at least 4238 scores.
The equation for finding the area of one triangle is A=1/2(B)(H)
because we have two triangles, we do not need to divide the answer by two.
That being said, 8 times 12 is 96.
By installing a sprinkler for every 10 sq ft. of land we divide that by 10 and get 9.6
Because the decimal value is above 5, my answer would be that you need 10 sprinklers.
