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kodGreya [7K]
3 years ago
9

A random variable is normally distributed with a mean of 25 and a standard deviation of 5. if an observation is randomly selecte

d from the distribution, determine two values of which the smallest has 25% of the values below it and the largest has 25% of the values above it.
Mathematics
1 answer:
Naddika [18.5K]3 years ago
7 0
<span>A random variable is normally distributed with a mean of 25 and a standard deviation of 5. if an observation is randomly selected from the distribution, determine two values of which the smallest has 25% of the values below it and the largest has 25% of the values above it.</span>
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Please answer and show a little work
Pavlova-9 [17]

1 kilometer = 1000 meters

3 kilometers would be 3000 meters

Divide total meters by number of parcels:

3000 / 10 = 300

The answer is 300 meters

5 0
3 years ago
Simplify the following, leaving your answer with a positive exponent: <br> x^-12/ x^-7
storchak [24]

Answer:

\frac{1}{x^{5} }

Step-by-step explanation:

x^-12/ x^-7

= x^(-12-(-7))

= x^-5

= 1/x^5

3 0
3 years ago
Donald has x twenty-dollar bills and 1 ten-dollar bill.<br> How much money does Donald have?
soldi70 [24.7K]

Answer:

10 +(20x)

Step-by-step explanation:

Donald has number of twenty-dollar bills = x

He has ten-dollar bill = 1

Total amount of bills = 10 +(20x)

The amount of the bill that Donald have is 10 + (20x)

4 0
3 years ago
A graph has a constant of proportionality of 7.2. Let y represent minutes and x represent miles.
vodka [1.7K]

Answer:

  7.2 minutes per mile

Step-by-step explanation:

If we assume the description means y = 7.2x, the rate 7.2 means each increase in x of 1 mile results in an increase in y of 7.2 minutes. That is the rate is 7.2 minutes per mile.

4 0
3 years ago
(14-8) × (15-4) <br> Use the order of operations to find the value of each expression
stepan [7]

Answer:

66

Step-by-step explanation:

PEMDAS (parenthesis is first)

14-8=6

15-4=11

then you multiply

6 times 11 equals 66

5 0
3 years ago
Read 2 more answers
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