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3 years ago

5

Larry is doing an experiment. He has a bag with five black marbles, five red marbles, and five blue marbles. Each trial, he pick

s a colored marble from the bag and then puts it back into the bag. What is the Probability that he will pick a black or red marble each trial?

1 answer:

Daniel [21]3 years ago

3 0

Answer:

5/10

Step-by-step explanation:

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AYO CAN YALL HELP Me PLZZZZz IF U HELP WIT ALLL U GET BRAINLES

monitta

Answer:

The first one is B

Step-by-step explanation:

if you count how many faces or sides it has its 5

6 0

3 years ago

Read 2 more answers

A ship is 1.4° off course. If the ship is traveling at 14.0 miles per hour, how far off course will it be after 2 hours?

sesenic [268]

Answer:

about 0.7 miles

Step-by-step explanation:

When you draw a diagram of the problem, you see that the shortest distance back to the course is the distance traveled times the sine of the angle:

distance off course = (14 mi/h)×(2 h)×sin(1.4°) ≈ 0.684 mi

The ship is about 0.7 miles from its intended course.

6 0

4 years ago

Determine the margin of error, m m , of a 90% confidence interval for the mean IQ score of all students with the disorder. Assum

Vsevolod [243]

Answer:

The margin of error is 6.45.

Step-by-step explanation:

The complete question is:

As an early intervention effort, a school psychologist wants to estimate the average score on the Stanford-Binet Intelligence Scale for all students with a specific type of learning disorder using a simple random sample of 36 students with the disorder.

Determine the margin of error, of a 99% confidence interval for the mean IQ score of all students with the disorder. Assume that the standard deviation IQ score among the population of all students with the disorder is the same as the standard deviation of IQ score for the general population, σ = 15 points.

The (1 - <em>α</em>)% confidence interval for population mean <em>μ</em> is:

$CI=\bar x\pm z_{\alpha/2}\times\frac{\sigma}{\sqrt{n}}$

The margin of error for this interval is:

$MOE= z_{\alpha/2}\times\frac{\sigma}{\sqrt{n}}$

Given:

<em>n</em> = 36

σ = 15

(1 - <em>α</em>)% = 99%

Compute the critical value of <em>z</em> for 99% confidence level as follows:

$z_{\alpha/2}=z_{0.01/2}=z_{0.005}=2.58$

*Use a <em>z</em>-table.

Compute the value of MOE as follows:

$MOE= z_{\alpha/2}\times\frac{\sigma}{\sqrt{n}}$

$=2.58\times\frac{15}{\sqrt{36}}$

$=2.58\times 2.5\\=6.45$

Thus, the margin of error is 6.45.

5 0

3 years ago

Find the distance between the origin and (8,15)

stellarik [79]

The distance between the origin and (8,15) is 17

Step-by-step explanation:

We need to find the distance between the origin and (8,15)

We know that x and y coordinates at origin are (0,0)

The formula used to find distance is:

$Distance=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

$x_1=0, y_1=0, x_2=8,y_2=15$

Putting values and finding distance:

$Distance=\sqrt{(8-0)^2+(15-0)^2}$

$Distance=\sqrt{(8)^2+(15)^2}$

$Distance=\sqrt{64+225}$

$Distance=\sqrt{289}$

$Distance=17$

So, The distance between the origin and (8,15) is 17

Keywords: Distance between points

Learn more about Distance between points at:

#learnwithBrainly

8 0

4 years ago

Anyone can help with the math question plz

dezoksy [38]

Answer:

A = 0

Step-by-step explanation:

3 times 0 =0

0 + 8 = 8

8 divided by 2 = 4

4 is less than 10

6 0

3 years ago