Answer:
26.6 minutes
Step-by-step explanation:
Set up a proportion
3/8 = 10/x
cross multiply
3x = 80
x = 26.6
Answer:
-5 2/5
Step-by-step explanation:
we know that 2/5 is 0.4 so
it is -5.4
-5.4 is greater than -5.7
Answer:
0.6826 = 68.26% probability that you have values in this interval.
Step-by-step explanation:
Normal Probability Distribution
Problems of normal distributions can be solved using the z-score formula.
In a set with mean
and standard deviation
, the z-score of a measure X is given by:

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.
X~N(8, 1.5)
This means that 
What is the probability that you have values between (6.5, 9.5)?
This is the p-value of Z when X = 9.5 subtracted by the p-value of Z when X = 6.5. So
X = 9.5



has a p-value of 0.8413.
X = 6.5



has a p-value of 0.1587
0.8413 - 0.1587 = 0.6826
0.6826 = 68.26% probability that you have values in this interval.
Answer:
D
Step-by-step explanation:
if you were to chose c you would find that to negatives make a positive and the first negative has to be there so d would be the best possible answer

Step-by-step explanation:
- Set up equation as we know both weights are equal.
- Subtract two from both sides and divide by 2 to isolate the variable a.
- 3 = a