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3 years ago

Can anyone help me with this plz

Mathematics

1 answer:

Citrus2011 [14]3 years ago

3 0

Number 2 I believe
I need this in school

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Change the fraction to a decimal: 7/3 = _____

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Divide 7 by 3 and show that 3 repeats by solving a few decimal places.

Step-by-step explanation:

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3 years ago

Beginning with a regular hexagon, a 6-pointed star is formed by constructing equilateral triangles, whose sides are the same len

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1/12

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3 years ago

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What is the equation for this word problem. Steve and Josephine ran 42 miles in a week. Steve ran 6 less than Josephine how many

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Steve-x
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3 years ago

The waiting time in line at an ice cream shop has a uniform distribution between 3 and 14 minutes. What is the 75th percentile o

lesya692 [45]

Answer:

The 75th percentile of this distribution is 11 .25 minutes.

Step-by-step explanation:

The random variable X is defined as the waiting time in line at an ice cream shop.

The random variable X follows a Uniform distribution with parameters a = 3 minutes and b = 14 minutes.

The probability density function of X is:

$f_{X}(x)=\frac{1}{b-a};\ a$

The pth percentile is a data value such that at least p% of the data-set is less than or equal to this data value and at least (100-p)% of the data-set are more than or equal to this data value.

Then the 75th percentile of this distribution is:

$P (X < x) = 0.75$

$\int\limits^{x}_{3} {\frac{1}{14-3}} \, dx=0.75\\\\ \frac{1}{11}\ \cdot\ \int\limits^{x}_{3} {1} \, dx=0.75\\\\\frac{x-3}{11}=0.75\\\\x-3=8.25\\\\x=11.25$

Thus, the 75th percentile of this distribution is 11 .25 minutes.

3 0

3 years ago

Solve for t.

Alona [7]

Answer:

T = 4

i think

but my original answer is t = 1/3 = 0.333

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2 years ago

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