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3 years ago

Based on the theoretical probability, how many times would you expect to pick a yellow skittle if you pick 150 times?

Mathematics

2 answers:

Fudgin [204]3 years ago

8 0

Answer:

why are you digging through skittles 150 times?

Ad libitum [116K]3 years ago

6 0

Answer:

Is there a graph that went with this question?

Step-by-step explanation:

The question is incomplete

Also please mark brainliest

Have a good day.

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All real numbers greater thab or equal to 67

sineoko [7]

An equation for that would be.

x => 67

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2 years ago

Which of the following is the fastest unit rate ( 1 mile = 1,760 yards = 5,280 feet)

4vir4ik [10]

Answer:

A. 30 miles per hour

Step-by-step explanation:

If you divide 5,280 feet by 1,760, you get a quotient of 3. Then you multiply 10 times 3 to get 30 miles.

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2 years ago

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2 years ago

Find the value of 8!

lukranit [14]

Answer: B

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3 years ago

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In a population distribution, a score of x=57 corresponds to z=-0.25 and a score of x=87 corresponds to z=1.25. Find the mean an

Serggg [28]

Here is dependence between scores and x-values:

$Z_i=\dfrac{X_i-\mu}{\sigma},$

where $\mu$ is the mean, $\sigma$ is standard deviation and i changes from 1 to 2.

1. When i=1, $Z_1=-0.25,\ X_1=57,$ then

$-0.25=\dfrac{57-\mu}{\sigma}.$

2. When i=2, $Z_2=1.25,\ X_2=87,$ then

$1.25=\dfrac{87-\mu}{\sigma}.$

Now solve the system of equations:

$\left\{\begin{array}{l}-0.25=\dfrac{57-\mu}{\sigma}\\ \\1.25=\dfrac{87-\mu}{\sigma}.\end{array}\right.$

$\left\{\begin{array}{l}-0.25\sigma=57-\mu\\ \\1.25\sigma=87-\mu.\end{array}\right.$

Subtract first equation from the second:

$1.25\sigma-(-0.25\sigma)=87-57,\\ \\1.5\sigma=30,\\ \\\sigma=20.$

Then

$1.25=\dfrac{87-\mu}{20},\\ \\87-\mu=25,\\ \\\mu=87-25=62.$

Answer: the mean is 62, the standard deviation is 20.

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3 years ago

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