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liq [111]
3 years ago
8

Suppose that a committee is studying whether or not there is excessive time waste in our judicial system. It is interested in th

e mean amount of time individuals spend at the courthouse waiting to be called for jury duty. The committee randomly surveyed 81 people who recently served as jurors. The sample mean wait time was 4 hours with a sample standard deviation of 1.2 hours. (a) Define the random variables X and X in words.
Mathematics
1 answer:
irina1246 [14]3 years ago
8 0

Answer:000

Step-by-step explanation:

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How can you help this student make sense of her method? <br> ONLY ANSWER IF YOU KNOW THE ANSWER
Misha Larkins [42]

Answer: Read it to him again, and explain all the steps to him nice and slowly.

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3 years ago
Find the reference angle given: t= -5π/3.
Elina [12.6K]

Answer:

The reference angle is \frac{\pi}{3}

Step-by-step explanation:

The given angle is t=-\frac{5\pi}{3}

The reference angle is the acute angle, that a given angle  makes with the x-axis.

First let us make a sketch of the given angle. <em>See diagram in attachment.</em>

Let \theta be the reference angle of  t=-\frac{5\pi}{3}


Then, from the diagram, we need to subtract \theta from -\frac{5\pi}{3} to get to -2\pi.


We can therefore write the following equation and solve for \theta.


\Rightarrow -\frac{5\pi}{3}-\theta=-2\pi


We group like terms to get,

\Rightarrow -\theta=-2\pi +\frac{5\pi}{3}

We collect LCM to get,

\Rightarrow -\theta=\frac{-6\pi+5\pi}{3}

We simplify to get,

\Rightarrow -\theta=-\frac{\pi}{3}

We divide through by -1

\theta=\frac{\pi}{3} to get,

The correct answer is D.







4 0
3 years ago
A person is going to fly from New York to London. If he leaves at 4:00 p.m., Eastern Standard Time and the flight lasts 4 1/2 ho
Lyrx [107]
If they leave at 4 pm it is 5 hours ahead so it will be 7 pm

7 0
3 years ago
Read 2 more answers
What's the measurement of x?<br><br> Pls answer A.S.A.P
WITCHER [35]

36

Step-by-step explanation:

360/2=180

180/5=36

7 0
3 years ago
Read 2 more answers
Please help with 32 and 33, thank you.
PtichkaEL [24]

Answer:

32. ∛((x-7)/4) = f^(-1)(x)

33. -10x - 9

Step-by-step explanation:

32. We want to switch f(x) and x, and then solve for f(x) to get the inverse.

x = 4f(x)³ + 7

subtract 7 from both sides

x -7 = 4f(x)³

divide both sides by 4

(x-7)/4 = f(x)³

cube root both sides

∛((x-7)/4) = f(x)

make f(x) f^(-1)(x) because this is now the inverse

∛((x-7)/4) = f^(-1)(x)

the second answer is correct

33. for composition, we can treat (f · g) (x) as attached picture (content filter!), so we plug g(x) into f(x). This results in

2(-5x-7) + 5

expand

-10x - 14 + 5

add

-10x - 9

the second answer is correct

4 0
3 years ago
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