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Stels [109]
3 years ago
11

Suppose the mean of a normally distributed population is 300, and 200 simple random samples are drawn from the population. At

Mathematics
1 answer:
V125BC [204]3 years ago
4 0

Answer:

the required number of samples to contain the population mean = 136

Step-by-step explanation:

From the Empirical rule, If a data is normally distributed, then about 68% of the population lies within one standard deviation from mean.

Now, if we suppose that the mean of a normally distributed population is 300, and 200 simple random samples are drawn from the population. i.e. μ = 300

And;

Number of simple random samples: n = 200

Thus, by implication, we would expect about 68% of 200 samples confidence intervals to contain the population mean .

Hence,

Required number of samples = 68% of 200

This gives ;

0.68 x 200 = 136

Thus , the required number of samples = 136

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Step-by-step explanation:

Associative property

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4 years ago
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What is the value of a^3, if a =7
alekssr [168]
Ok so remember
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8 0
3 years ago
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What is the arc measure of YWZ in<br> degrees?<br> (5w+4)<br> (11w)
mote1985 [20]

Answer:

59 degrees

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Since the Angles (5w+4) and (11w) forms a straight line, then:

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Therefore, the arc measure of YZ will be:

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7 0
3 years ago
Integers and polynomials are both _[blank 1]_ under addition, subtraction, and multiplication; however, operations on polynomial
geniusboy [140]

Answer:

Integers and polynomials are both <u>closed </u>under addition, subtraction, and multiplication; however, operations on polynomials <u>can sometimes be open </u>while operations on integers <u>produce irrational results </u>.

Step-by-step explanation:

Closed means that addition, subtraction, and multiplication of integers gives as result a new integer; and addition, subtraction, and multiplication of polynomials gives as result a new polynomial.

Operations on polynomials can sometimes be open, like in division.

Operations on integers can produce irrational results , for example, dividing 11 by 9.

5 0
3 years ago
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bezimeni [28]

We have been given a system of equations. f(x)=x-4 and g(x)=x^2-10. We are asked to find the solution of the equation f(x)=g(x) by sketching the functions.

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We can also see that g(x) is a quadratic function. The function g(x) is an upward opening parabola, whose vertex is at point (0,-10).

Upon graphing both equations, we will get our required graph as shown in the attachment.

The solution of f(x)=g(x) will be the x-coordinates of points, where both functions will intersect.

We can see that both functions are intersecting at x=-2\text{ and }3, therefore, -2\text{ and }3 are the solutions of  f(x)=g(x) and option B is the correct choice.

3 0
4 years ago
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