Answer:
the answer to the question is x equals y/3 plus 1/3.
Answer:
7:55am
Step-by-step explanation:
The hour hand is not quite at the eight so it would be 7. The minute hand is directly on the 11, from each number is 5 minutes multiplying 11×5 would be 55. therefore it being 7:55am which is morning.
<u>Answer:</u>
\
<u>Step-by-step explanation:</u>
The toy box holds 3 wind-up toys and 5 spinning toys. A toy is taken out of the box and then put back 8 times. It will have no effect.
Next, a spinning toy is taken out of the box 3 times. So, there are now
3 wind-up and spinning toys.
P(Drawing a wind - up toy out of the box)
=
=\ (Answer)
Answer:
The first quartile of the strengths of this alloy is 9.055 GPa.
Step-by-step explanation:
Problems of normal distributions can be solved using the z-score formula.
In a set with mean and standard deviation , the zscore 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 pvalue, we get the probability that the value of the measure is greater than X.
The strength of an aluminum alloy is normally distributed with mean 10 gigapascals (GPa) and standard deviation 1.4 GPa.
This means that
What is the first [lower] quartile of the strengths of this alloy?
This is the 100/4 = 25th percentile, which is X when Z has a pvalue of 0.25, so X when Z = -0.675.
The first quartile of the strengths of this alloy is 9.055 GPa.