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Ratling [72]
3 years ago
11

An environmentalist wants to find out the fraction of oil tankers that have spills each month.

Mathematics
1 answer:
Anastasy [175]3 years ago
3 0

Answer:

The estimate of the proportion of oil tankers that had spills is 0.25.

Step-by-step explanation:

Proportion of oil tankers that had spills:

1036 tankers.

777 did not have spills.

So 1036 - 777 = 259 had spills.

The proportion is:

p = \frac{259}{1036} = 0.25

The estimate of the proportion of oil tankers that had spills is 0.25.

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These tables of value represent continuous functions. In which table do the values represent an exponential function?
oksano4ka [1.4K]

Answer:

B.

Step-by-step explanation:

A goes up by 1

C goes up by 8

D goes up by 5

But B increments by 2x (2 times)

5 0
3 years ago
I need help me with number 7
Lina20 [59]
-7=-9+n/8
Add 9 to both sides
2=n/8
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4 0
3 years ago
Assume that​ women's heights are normally distributed with a mean given by mu equals 62.5 in​,and a standard deviation given by
Misha Larkins [42]

Answer:

(a) 0.5899

(b) 0.9166

Step-by-step explanation:

Let X be the random variable that represents the height of a woman. Then, X is normally distributed with  

\mu = 62.5 in

\sigma = 2.2 in

the normal probability density function is given by  

f(x) = \frac{1}{\sqrt{2\pi}2.2}\exp{-\frac{(x-62.5)^{2}}{2(2.2)^{2}}}, then

(a) P(X < 63) = \int\limits_{-\infty}^{63}f(x) dx = 0.5899

   (in the R statistical programming language) pnorm(63, mean = 62.5, sd = 2.2)

(b) We are seeking P(\bar{X} < 63) where n = 37. \bar{X} is normally distributed with mean 62.5 in and standard deviation 2.2/\sqrt{37}. So, the probability density function is given by

g(x) = \frac{1}{\sqrt{2\pi}\frac{2.2}{\sqrt{37}}}\exp{-\frac{(x-62.5)^{2}}{2(2.2/\sqrt{37})^{2}}}, and

P(\bar{X} < 63) = \int\limits_{-\infty}^{63}g(x)dx = 0.9166

(in the R statistical programming language) pnorm(63, mean = 62.5, sd = 2.2/sqrt(37))

You can use a table from a book to find the probabilities or a programming language like the R statistical programming language.

4 0
3 years ago
$150 per hour is how much per min
SVEN [57.7K]

$2.50

Hope this helps!

May I have brainliest? :D

7 0
2 years ago
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Can a trapezoid be a hexagon
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Answer:

No. A trapezoid is a shape with four sides, while a hexagon is a shape with six sides.

Step-by-step explanation:

3 0
3 years ago
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