115 because 115 plus 65 is equal to the measure of 180 degrees, which is the amount of degrees formed by a single, straight, line. Try not to overthink it :)
Answer:
d. The population standard deviation is known.
Step-by-step explanation:
T-distribution or Z-distribution, which to use?
If we have the population standard deviation is known, we use the z-distribution.
Otherwise, if we only have the standard deviation for the sample, we use the t-distribution.
Which of the following is not appropriate to use the t-confidence interval for
When the population standard deviation is known, so letter d.
Answer:
od
Step-by-step explanation:
Answer:
$0.65
Step-by-step explanation:
3.75-.5=3.25
3.25/5=.65
EC= 12sqrt2
Use the pythagorean theorem to find EC.
6^2+EC^2=18^2
36+EC^2=324
EC^2=288
square root both sides
EC= 12sqrt2