The best fit line must go through all data points on a graph. TRUE OR FALSE

sdas [7]

-24a^3b^7 you multiply the two numbers and add the exponents.

5 0

3 years ago

Employment Surveys Employment statistics in the US are often based on two nationwide monthly surveys: the Current Population Sur

KATRIN_1 [288]

Answer:

Following are the solution to this question:

Step-by-step explanation:

Just Parts (c) were discussed because they were mentioned in the issue.

A subpart of (c):

In point (i)

The answer is 1 for the CES since only CES has salary and wage rates information.

In point (ii)

The answer is 2 for the CPS because only the CPS has job status information.

In point (iii)

The answer is 3 for the CPS as detailed in this issue, neither CES nor CPS explicitly states gender information. Even so, population studies generally include a 'gender' requirement.

3 0

3 years ago

A population of rabbits is increasing continuously at a rate of 20% each year. If there were 25 rabbits in the year 2012, how ma

mario62 [17]

Answer:

62

Step-by-step explanation:

20% as a decimal is 0.2

For each year get the amount of increase by multiplying the number of rabbits by 0.2

Rabbits in 2013:

25 x 0.2 = 5

25 + 5 = 30 rabbits

Rabbits in 2014:

30 x 0.2 = 6

30 + 6 = 36 rabbits

Rabbits in 2015:

36 x 0.2 = 7.2

36 + 7.2 = 43.2

Rabbits in 2016:

43.2 x 0.2 = 8.64

43.2 + 8.64 = 51.84

Rabbits in 2017:

51.84 x 0.2 = 10.368

51.84 + 10.368 = 62.208

= 62 rabbits

7 0

3 years ago

Which pairs of angles are supplementary?

vfiekz [6]

Supplementary angles = Angles that add up to 180°.

∠5 + ∠7 = 180° ← supplementary angles

∠1 = ∠5
Since ∠5 + ∠6 = 180°
⇒ ∠1 and ∠6 will also be 180° . ← supplementary angles

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Answer: ∠5 + ∠7 (Answer D) and ∠1 + ∠6 (Answer A)
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7 0

4 years ago

Read 2 more answers

In recent years, only 79% of the fruit sold at Fred's Fruit stand has been any good. Fred recently started buying fruit from new

Juli2301 [7.4K]

Answer:

The p-value of the test is 0.0485 < 0.05, also less than 0.07, so there is sufficient evidence to conclude that there is a statistically significant increase in the percentage of good fruit, for both significance levels, thus the change in significance levels do not change the conclusion.

Step-by-step explanation:

79% of the fruit sold at Fred's Fruit stand has been any good. Test if there has been an increase.

At the null hypothesis, we test if there has been no increase, that is, the proportion is still of 79%, so:

$H_0: p = 0.79$

At the alternative hypothesis, we test if there has been an increase, that is, more than 79% being good, so:

$H_1: p > 0.79$

The test statistic is:

$z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}$

In which X is the sample mean, $\mu$ is the value tested at the null hypothesis, $\sigma$ is the standard deviation and n is the size of the sample.

0.79 is tested at the null hypothesis:

This means that $\mu = 0.79, \sigma = \sqrt{0.79*0.21}$

In a random sample if 475 pieces, 85 were bad.

So 475 - 85 = 390 were good, and:

$n = 475, X = \frac{390}{475} = 0.8211$

Value of the test statistic:

$z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}$

$z = \frac{0.8211 - 0.79}{\frac{\sqrt{0.79*0.21}}{\sqrt{475}}}$

$z = 1.66$

P-value of the test and decision:

The p-value of the test is the probability of finding a sample proportion above 0.8211, which is 1 subtracted by the p-value of Z = 1.66.

Looking at the z-table, z = 1.66 has a p-value of 0.9515.

1 - 0.9515 = 0.0485

The p-value of the test is 0.0485 < 0.05, also less than 0.07, so there is sufficient evidence to conclude that there is a statistically significant increase in the percentage of good fruit, for both significance levels, thus the change in significance levels do not change the conclusion.

5 0

3 years ago