Suppose that a committee is studying whether or not there is excessive time waste in our judicial system. It is interested in the 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. Define the random variables X and $\bar{X}$ in words.

Answer:

(B)

X is the amount of time an individual waits at the courthouse to be called for service.
$\bar{X}$ is the mean wait time for a sample of individuals.

Step-by-step explanation:

The random variable X is the amount of time for which each of the prospective juror waits at the courthouse before being called for service.

$\bar{X}$ is the mean wait time for a the given sample of individuals. In the case given,

5 0

2 years ago

What is the factorization of the trinomial below? -X^2 - 2x + 48

raketka [301]

Answer:

<h3>I think option C.</h3>

(x-6) (x-8).

3 0

2 years ago

Read 2 more answers

NEED HELP! Have no idea what his is?? 50 points

soldi70 [24.7K]

Well i have to say is that PEMDAS exponents first. Hope this helps.

5 0

3 years ago

Read 2 more answers

Which equation is not a linear function? y = x-2 y = 2x y = x2 y = x + 2

lora16 [44]

As they are written, they are all linear. I think you meant for the third one to be y=x^2. if that is true then y=x^2 is a quadratic and therefore is the answer

8 0

2 years ago