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koban [17]
3 years ago
13

The lifespans of meerkats in a particular zoo are normally distributed. The average meerkat lives 10.4 years; the standard devia

tion is 1.9 years. Use the empirical rule (68-95-99.7%) to estimate the probability of a meerkat living between 12.3 and 14.2 years.
Mathematics
1 answer:
kotykmax [81]3 years ago
3 0

Answer: 13.5 % would be the answer

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What is the volume of a box with a width 2 1/2 inches, length 1 3/4 inches, and height 3 1/4 inches?
enot [183]

Answer:

The volume of the box is 41.21 inches cube.

Step-by-step explanation:

Given,

Width of the box 2\frac{1}{2} inches

                           =\frac{5}{2} inches  

Length of the box 1\frac{3}{4}inches

                           =\frac{7}{4} inches

Height of the box 3\frac{1}{4} inches

                            = \frac{13}{4} inches

The box is in cuboid form.

The volume of cuboid is given by (length × breadth × height ).

So,

volume of the box is  ( \frac{5}{2}  × \frac{7}{4} × \frac{13}{4} )

                                    = ( \frac{455}{32} )

                                    = 14.21 inches cube

 The volume of the box is 41.21 inches cube.

8 0
3 years ago
Suppose the population of IQ scores in the town or city where you live is bell-shaped, with a mean of 104 and a standard deviati
SVEN [57.7K]

Answer:

The mean of samples of 100 IQ scores taken out from this population will have a distribution with mean M=104 and standard deviation s=3.5.  

Step-by-step explanation:

We know the population mean and standard deviation, that has a bell-shaped distribution:

\mu=104\\\\\sigma=35

The sampling distribution, the distribution of the mean of samples of size n out of this population, will have the same mean as the population mean.

\mu_M=\mu=104

The standard deviation will be related to the population standard deviation and the sample size as:

\sigma_M=\frac{\sigma}{\sqrt{N}} =\frac{35}{\sqrt{100}}=3.5

Then, the mean of samples of 100 IQ scores taken out from this population will have a distribution with mean M=104 and standard deviation s=3.5.  

6 0
3 years ago
The quotient of m and 7
pochemuha
The expression would me m / 7 or m and 7 as a fraction. M is on the top
6 0
3 years ago
Let
DedPeter [7]

Whatever is inside parentheses first [g(x)], is what you would evaluate first, then after that, you would substitute that answer into the f(x) function for EVERY "X" YOU SEE:

[2x² + 5]² + [2x² + 5] + 2

[2x² + 5]² + [2x² + 7]↓

This is your final answer. You get it?

5 0
3 years ago
A 7-meter by 7-meter square is reduced so that each side is half as long as the original.
Lina20 [59]

Answer:

Step-by-step explanation:

  1. 7m ÷ 2 = 3.5m
  2. Part A: New square is 3.5-meter by 3.5-meter
  3. The original square's perimeter is 7x4=28-meter.
  4. The new square's perimeter is 3.5x4=12-meter
  5. Part B: The ratio is 12:28 or 3:7
  6. The original square's area is 7²=49 meter²
  7. The new square's area is 3.5²=12.25 meter²
  8. Part C: The ratio is 49:12.25
3 0
3 years ago
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