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2 years ago

Which one of these fractions are greatertest to least 1/2, 1/6, 5/8

Mathematics

2 answers:

tekilochka [14]2 years ago

8 0

Answer:

greatest 5/8

1/2

least 1/6

Step-by-step explanation:

Illusion [34]2 years ago

6 0

Answer:

5/8, 1/2, 1/6

Step-by-step explanation:

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What are the vertex and x-intercepts of the graph of the function given below?<br> y = x^2 - 2x - 48

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Answer:

vertex: (1, -49)

x-intercepts: (-6, 0) and (8, 0)

Step-by-step explanation:

I graphed it and looked for the needed information

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A researcher is concerned about the impact of students working while they are enrolled in classes, and she likes to know if stud

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(a) Point estimate = 7.10

(b) The critical value is 1.960

(d) Confidence Interval = (6.3, 7.9)

(e) We are 90% confident that the average number of hours worked by the students is between 6.3 and 7.9

Step-by-step explanation:

Given

$\bar x = 7.10$ -- sample mean

$\sigma=5$ --- sample standard deviation

$n = 150$ --- samples

Solving (a): The point estimate

The sample mean can be used as the point estimate.

Hence, the point estimate is 7.10

Solving (b): The critical value

We have:

$CI = 90\%$ --- the confidence interval

Calculate the $\alpha$ level

$\alpha = 1 - CI$

$\alpha = 1 - 90\%$

$\alpha = 1 - 0.90$

$\alpha = 0.10$

Divide by 2

$\frac{\alpha}{2} = 0.10/2$

$\frac{\alpha}{2} = 0.05$

Subtract from 1

$1 - \frac{\alpha}{2} = 1 - 0.05$

$1 - \frac{\alpha}{2} = 0.95$

From the z table. the critical value for $1 - \frac{\alpha}{2} = 0.95$ is:

$z = 1.960$

Solving (c): Margin of error

This is calculated as:

$E = z * \frac{\sigma}{\sqrt n}$

$E = 1.960 * \frac{5}{\sqrt {150}}$

$E = 1.960 * \frac{5}{12.25}$

$E = \frac{1.960 *5}{12.25}$

$E = \frac{9.80}{12.25}$

$E = 0.800$

Solving (d): The confidence interval

This is calculated as:

$CI = (\bar x - E, \bar x + E)$

$CI = (7.10 - 0.800, 7.10 + 0.800)$

$CI = (6.3, 7.9)$

Solving (d): The conclusion

We are 90% confident that the average number of hours worked by the students is between 6.3 and 7.9

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3 years ago

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4 years ago

130% of what number is 208?

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3 years ago

Which one of these fractions are greatertest to least 1/2, 1/6, 5/8​

Which one of these fractions are greatertest to least 1/2, 1/6, 5/8