-1 C, that's the only logical answer I can think of. Or does it have to be in F?
Andrea drove 50miles/hour
refer to pic for working
Answer:
y = 20
Step-by-step explanation:
-3y+12 = -48 . -12 from both sides
-3y = -60 . ÷3 on both sides
y = 20
So 2 weeks mean
250x 2= 500
Then .50 per mile so 500 miles mean
.50 x 500= 250
In total it will be
500+250= 750
Answer:
By the Empirical Rule, ![\pm 3\sigma](https://tex.z-dn.net/?f=%5Cpm%203%5Csigma)
Step-by-step explanation:
The Empirical Rule states that, for a normally distributed random variable:
68% of the measures are within 1 standard deviation of the mean.
95% of the measures are within 2 standard deviation of the mean.
99.7% of the measures are within 3 standard deviations of the mean.
The symbol of a standard deviation is
. So
When plotting sample statistics on a control chart, 99.7% of the sample statistic values are expected to fall within plus/minus how many sigma?
By the Empirical Rule, ![\pm 3\sigma](https://tex.z-dn.net/?f=%5Cpm%203%5Csigma)