Answer:
37
Step-by-step explanation:
The first thing is to calculate critical z factor
the alpha and the critical z score for a confidence level of 90% is calculated as follows:
two sided alpha = (100% - 90%) / 200 = 0.05
critical z factor for two sided alpha of .05 is calculated as follows:
critical z factor = z factor for (1 - .05) = z factor for (.95) which through the attached graph becomes:
critical z factor = 2.58
Now we have the following formula:
ME = z * (sd / sqrt (N) ^ (1/2))
where ME is the margin of error and is equal to 6, sd is the standard deviation which is 14 and the value of z is 2.58
N the sample size and we want to know it, replacing:
6 = 2.58 * (14 / (N) ^ (1/2))
solving for N we have:
N = (2.58 * 14/6) ^ 2
N = 36.24
Which means that the sample size was 37.
Answer:
x = 3, y = 2
Step-by-step explanation: Can i have brainliest
NAMASTE :)
0.00000000005
= 5 ×
Count the Digits after decimal.
We use minus (-) in power as the digit is in left side of decimal
If they are in right side then we use (+) plus sign in power.
I am pretty sure it is Point D
Answer:
27a + 24b
Step-by-step explanation:
Combine the like terms.
9a + 4a + 5a + 9a = 27a
17b + 6b + b = 24b
Remember, a number without a coefficent is 1.
Hope this helps! :)
