Ask question

Ask question

All categories

3 years ago

12

Tell whether choosing a blue marble from a jar containing 4 blue marbles and 12 red marbles is unlikely,jas likely as not, or li

kely.

1 answer:

lukranit [14]3 years ago

7 0

Unlikely
because there’s like 3 times more red marbles than blue

You might be interested in

Find X. Round to the nearest tenth if necessary.

storchak [24]

Answer:

3.2

Step-by-step explanation:

If there are 2 secont lines intersecting inside a circle like the picture shown, then the theorem tells us that <em>"the product of 2 segments of one secant line is equal to the product of 2 segments of other secant line"</em>

<em></em>

Thus, we can say that:

x * 10 = 8 * 4

10x = 32

x = 32/10

x = 3.2

3 0

3 years ago

If you get this right I will mark you as a brainliest

svp [43]

The answer would be D.

3 0

3 years ago

What is the slope-intercept form of the following equation? What is slope and the y intercept? 8x + 2y = 14

Natalka [10]

Answer:

m

=

4

Step-by-step explanation:

Given -

8

x

−

2

y

=

14

It is in the form

a

x

+

b

y

=

c

If a linear equation is in this form, then -

It slope is

−

a

b

In our case, we shall use this formula

m

=

−

8

−

2

=

4

To find the y-intercept put

x

=

0

8

(

0

)

−

2

y

=

14

−

2

y

=

14

y

=

14

−

2

=

−

7

To find the x-intercept put

y

=

0

8

x

−

2

(

0

)

=

14

8

x

=

14

x

=

14

8

=

7

4

5 0

3 years ago

Read 2 more answers

Which property justifies the following equation?

Leviafan [203]

1. . D . Identity , when you odd both properties it will always to be true on both sides

5 0

3 years ago

A union of restaurant and foodservice workers would like to estimate the mean hourly wage, μ, of foodservice workers in the U.S.

pav-90 [236]

Answer:

$n=(\frac{1.960(2.25)}{0.35})^2 =158.76 \approx 159$

So the answer for this case would be n=159 rounded up to the nearest integer

Step-by-step explanation:

Assuming this complete question: A union of restaurant and foodservice workers would like to estimate the mean hourly wage, , of foodservice workers in the U.S. The union will choose a random sample of wages and then estimate using the mean of the sample. What is the minimum sample size needed in order for the union to be 95% confident that its estimate is within $0.35 of ? Suppose that the standard deviation of wages of foodservice workers in the U.S. is about $2.15 .

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

$\bar X$ represent the sample mean for the sample

$\mu$ population mean (variable of interest)

$\sigma=2.25$ represent the population standard deviation

n represent the sample size

Solution to the problem

Since the Confidence is 0.95 or 95%, the value of $\alpha=0.05$ The margin of error is given by this formula:

$ME=z_{\alpha/2}\frac{s}{\sqrt{n}}$ (a)

And on this case we have that ME =0.35 and we are interested in order to find the value of n, if we solve n from equation (a) we got:

$n=(\frac{z_{\alpha/2} \sigma}{ME})^2$ (b)

The critical value for 95% of confidence interval now can be founded using the normal distribution. And in excel we can use this formla to find it:"=-NORM.INV(0.025;0;1)", and we got $z_{\alpha/2}=1.960$ , replacing into formula (b) we got:

$n=(\frac{1.960(2.25)}{0.35})^2 =158.76 \approx 159$

So the answer for this case would be n=159 rounded up to the nearest integer

3 0

3 years ago