Answer:
answer in the file
Step-by-step explanation:
the scale of a model railroad set is 3.5 millimeters to one foot if the length of a model car in the set is 150 millimeters what
2 answers:
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Answer:
y = -16
Step-by-step explanation:
First lets handle the fractional y's:
This can be reduced down to 2y. That is easier to work with. Next we will rewrite the equation using or new value for y:
35 + 2y = 3
Subtract 35 from both sides:
2y = -32
Next, divide both sides by 2
y = -16
Check our answer:
35 +
35 -40 + 8 = 3
-5 + 8 = 3
3 = 3
Answer:
Let X the random variable that represent the pulse rates of a population, and for this case we know the distribution for X is given by:
Where and
For this case the z score given by:
And for this case the z score is without units, so the correct answer would be:
The z scores are numbers without units of measurement.
Step-by-step explanation:
Previous concepts
Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".
The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".
Solution to the problem
Let X the random variable that represent the pulse rates of a population, and for this case we know the distribution for X is given by:
Where and
For this case the z score given by:
And for this case the z score is without units, so the correct answer would be:
The z scores are numbers without units of measurement.