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hichkok12 [17]
3 years ago
13

The weight of laboratory mice follows a normal distribution, with a mean of 0.68 ounce and a standard deviation of 0.02 ounce. W

hat percentage of the mice weigh between 0.62 ounce and 0.74 ounce?
A.99.7%
B.95%
C.68%
D.47.5%
E.34%
Mathematics
2 answers:
Natasha2012 [34]3 years ago
8 0
The answer is letter D
Soloha48 [4]3 years ago
6 0

Answer:

A.99.7%

Step-by-step explanation:

Calculate each z-score.

z = (x − μ) / σ

z = (0.74 − 0.68) / 0.02

z = 3

z = (x − μ) / σ

z = (0.62 − 0.68) / 0.02

z = -3

You can use a z-score table, or use the empirical rule.

P(-3 < z < 3) = 99.7%.

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3 years ago
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The estimated answer to a multiplication problem is 800,000. Which of the following expressions could result in this answer? Exp
EastWind [94]

Answer:

8,146 x 121

Step-by-step explanation:

This is a problem in which you need to measure your understading of "orders of magnitude."

If the estimated answer is 800000 that means that we are looking at a multiplication in the "order of" 8*10^5

You need to look at the "orders of magnitude" of the things you're multiplying. In the first case, we have 8146*12 that would be "of the order of" 8*10^3 times 10^1. So the whole multiplication would "of the order of" 8*10^4 or near 80000

The correct answer, 8,146 x 121, is because it's "of the order of" 8*10^3 times 10^2 and the gives us the 8*10^5 we need.

6 0
3 years ago
find two numbers that have square roots between 7 and 8. one number should have a square root closer to 7 and the other should h
Bad White [126]

Step-by-step explanation:

7 = √49

8 = √64

So any positive integer between 50 to 63, both inclusive, have a square root between 7 and 8.

8 0
3 years ago
The area of a rectangle is the product of its length and width. Both length and width are whole numbers. A rectangular poster ha
Alona [7]

Answer:

17 inches.

Step-by-step explanation:

If the area of a rectangle is the product of its length and width, then;

Area of a rectangle = Length × Width

Given that the width of the poster is greater than 10 inches and is prime, this means and W>10

Area of the rectangle = 204in²

On substituting the values in the formula;

A = LW

204 = LW

Since W is greater than 10 and is prime, it can be between the prime numbers 11, 13 and 17. Note that L must be a whole number as well for any number to be the right answer we seek.

Let's test each values of the prime width that will give a length that is a whole number.

If W = 11

204 = 11×L

L = 204/11

L = 18.54

Since the length didn't give us a whole number, this means our width is not 11.

If W = 13

204 = L × 13

L = 204/13

L = 15.69

Also, we can see that the length is not also a whole number for the value of 13 as the prime width.

If W = 17

204 = L × 17

L = 204/17

L = 12

It can be seen that the length of the rectangle gave us a whole number when we used the prime width of 17, hence the width of the poster that is greater than 10 inches and is prime that makes both length and width to be a whole number is 17 inches.

7 0
3 years ago
How many milliliters are in 30 liters? <br><br> 300<br> 3,000<br> 30,000<br> 300,000
Alborosie

Answer:

30000 Milliliters

Step-by-step explanation:

multiply the volume value by 1000

30 x 1000 = 30000

Brainliest if this was helpful. Thanks!

3 0
3 years ago
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