HELPPPPP!!!! Me Please
1 answer:
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Answer:
Step-by-step explanation:
Let
x -----> the number of days
y ----> the number of minutes Yuson has left
we know that
The linear equation in slope intercept form is equal to
where
m is the slope
b is the y-coordinate of the y-intercept (initial value)
In this problem we have
The slope is equal to
----> is negative because is a decreasing function
----> initial value
substitute the values
Answer:
Mean = 14.5 years and standard deviation = 0.34 years
Step-by-step explanation:
Data provided in the question:
Mean of the normal distribution = 14.5 years
Population standard deviation, σ = 2.5 years
Sample size = 55 students
Now,
The mean of the sample of 55 students will remain the same i.e 14.5 years
and,
Standard deviation of the sample of 55 students will be calculated using the formula
=
here n is the sample size
thus,
Standard deviation of the sample of 55 students, σₓ =
= 0.337 ≈ 0.34
Hence,
the Mean = 14.5 years and standard deviation = 0.34 years