Answer:
2) 1
3) 9
4) 78
Step-by-step explanation:
2)
1 showed up the most
3)
range = max value - min value
range = 9 - 0
range = 9
4)
mode means which showed up the most,
78 showed up the most
X=2
So,
=4^2×2 -100
=4^4-100
=256-100
=56
Answer:
y = x
Step-by-step explanation:
The inverse of f(x) = x is just y = x.
Using Chebyshev's Theorem, considering a standard deviation of 40, we have that at least 75% of the students scored between 360 and 520.
<h3>What does Chebyshev’s Theorem state?</h3>
When we have no information about the population distribution, Chebyshev's Theorem is used. It states that:
- At least 75% of the measures are within 2 standard deviations of the mean.
- At least 89% of the measures are within 3 standard deviations of the mean.
- An in general terms, the percentage of measures within k standard deviations of the mean is given by
.
In this problem, considering a standard deviation of 40, we have that:
440 - 2 x 40 = 360.
440 + 2 x 30 = 520.
Within 2 standard deviations of the mean, no information about the distribution, hence, at least 75% of the students scored between 360 and 520.
More can be learned about Chebyshev's Theorem at brainly.com/question/25303620
Answer:
50
Step-by-step explanation:
let x = total DVD rentals
450=9x
450/9=x
50=x
50 DVDs were rented