A set of data with a mean of 45 and a standard deviation of 8.3 is normally distributed. Find the value that is –2 standard deviations away from the mean.
Answers
45 - (2(8.3)) = 28.4
The value is 28.4 that is –2 standard deviations away from the mean.
Answer: 28.4
Step-by-step explanation:
Given : A set of data with a mean of and a standard deviation of
is normally distributed.
Now, the value that is –2 standard deviations away from the mean is given by :-
Hence, the value that is –2 standard deviations away from the mean. = 28.4
Related Questions
Margaritas is a very popular restaurant. Occasionally, the restaurant provides lunch and/or dinner for a local charity house. Each lunch costs $6.50. Each dinner costs $10.25. The restaurant's expenses for providing the meals cannot exceed $1,183 per trimester. If x represents the number of lunches and y represents the number of dinners, what domain best fits the situation
A company has two electric motors that consume varying amounts of power. The power consumed by each motor is a function of the time (t in minutes) for which it runs. The cost of power (in $) to run one motor is given by the function `C_a(t) = t^2 - 2t + 5`. The cost of running the second motor is given by `C_b(t) = 3t + 2`. Which function gives the total cost of running both motors?
I need help with thiss plz
Which is the best estimate of11 1/5 and 2 3/4
A)8
B)12
C)16
D)18
Answers
Answer:
i think its A (edit: im gonna take that back because i was looking at the wrong side, logically it is 12)
Step-by-step explanation:
Answer:
B. 12
Step-by-step explanation:
logically speaking is 12
Answers
Answer:
The greatest common factor of 4 is 4
Step-by-step explanation:
1*4
2*2
4 is the biggest number that goes into 4
Answers
Final price = a+ 6%×a = $40.69552
Answers
Answer:
13 m + 2.7 n.
Step-by-step explanation:
Given : the product of 13 and m plus the product of 2.7 and n
To find : Write expression .
Solution : We have given
Product of 13 and m = 13 * m
Product of 2.7 and n = 2.7 * n
According to question :
Sum of Product of 13 and m and Product of 2.7 and n
13 *m + 2.7 *n
13 m + 2.7 n.
Therefore, 13 m + 2.7 n.
If thats what you need
Answers
Answer:
The answer is A
Step-by-step explanation:
You would measure earth's mass is kg and not in g , mg or mcg
Answers
Answer:
Please find below the complete question:
The number x of stereo speakers a retail chain is willing to sell per week at a price of p dollars is given by x = 80 − 410. Find the supply and instantaneous rate of change of supply when the price is 75 dollars.
Supply = 398
Instantaneous rate of change of supply
Step-by-step explanation:
Supply when price = $75
Supply = 398 stereo speakers
To get the instantaneous rate of supply, we differentiate the supply, x, with respect to price, p
Using chain rule, we have
At p = $75
The question is not complete and the complete question says:
The number x of stereo speakers a retail chain is willing to sell per week at a price of p dollars is given by x=80√(p+27) − 410 Find the supply and instantaneous rate of change of supply when the price is 75 dollars
Answer:
A) Approximately 398 stereo speakers
B) Instantaneous rate of change = 3.961
Step-by-step explanation:
From the question, the number of speakers is given as;
x=80√(p+27) − 410
A) Thus at a price of $75,
The amount supplied will be;
x = 80√(75+27) − 410
x = 80√(102) - 410
x = (80 x 10.0995) - 410
x = 807.96 - 410 = 397.96 ≈ 398 stereo speakers
B) The instantaneous rate of change is given as;
dx/dp of the supply equation.
Thus, let's rearrange the supply equation first before differentiating.
So, x = 80√(p+27) − 410
x = 80[(p +27)^(1/2)] - 410
So, dx/dp = [(80 x 1/2) (p + 27)^(-1/2)]
dx/dp = 40/√(p+27)
So, at price of $75,
dx/dp = 40/√(75+27) = 40/√102
= 40/10.0995 = 3.961