Can someone help with this? I don't understand how to find the answer

A major cab company in Chicago has computed its mean fare from O'Hare Airport to the Drake Hotel to be $28.75 , with a standard

bulgar [2K]

Answer:

Following are the solution to the given choices:

Step-by-step explanation:

Using chebyshev's theorem :

$\to P(|(x-\mu)|\leq k \sigma)\geq 1- \frac{1}{k^2}\\\\here \\ \to \mu=28.75\\\\ \to \sigma=4.44$

In point a)

$\to |(x-\mu)|= |20.17-28.75|=8.58 and \sigma=4.44 \\\\so, \\k= \frac{ |(x-\mu)| }{\sigma}$

$= \frac{8.58}{4.44} \\\\ =1.9 \\\\ =2$

$value= (1- \frac{1}{k^2}) \times 100 \% =75\%$

In point b)

$\to (1- \frac{1}{k^2}) \times 100 \% =84\% \\\\\to (1- \frac{1}{k^2})=0.84 \\\\\to \frac{1}{k^2} =0.16 \\\\\to \frac{1}{k}=0.4\\\\ \to k=2.5 \\\\\to |(x-\mu)| \leq k \sigma \\\\= |(x-\mu)|\leq 2.5 \times 4.44 \\\\ = |(x-\mu)|\leq 1.11 \\\\ = (28.75\pm 11.1) \\\\\to \text{fares lies between}(17.65,39.85)$

In point c)

$\to 99.7 \% \\ lie \ between=28.75 \pm z(.03)\times \sigma \\\\ =28.75\pm 2.97 \times 4.44\\\\=(28.75\pm 13.1)\\\\=(15.65,41.85)\\$

In point d)

using standard normal variate

$x=20.17\\\\ z=-2 \\\\x=37.13\\\\ z=2\\\\\to P(20.17$

8 0

3 years ago

In rhombus ABCD, diagonals AC and BD meet at point E. If the measure of angle DAB is 46 degrees, find the length of EB.

Paladinen [302]

<span>There is no way to get an exact answer. It could be a really small rhombus, or a huge one, and still have a 46º angle there. You need at least one length of a segment.

Your problem could have errors that's why it can't be solved. You do not have to worry because it happens sometimes.

I hope it helps you.</span>

3 0

3 years ago

why do the products of multidigit numbers with zeros & one digit sometimes have zeros in them & sometimes have no zeros

Bingel [31]

Im not quite triggered but U should go to mathantics.com or watch his videos to find it out :D

3 0

3 years ago

Read 2 more answers

The length of a rectangle is 99 cm less than four timesfour times its width. if the area of the rectangle is 1313 cm2, find the

serg [7]

<span>
try using the formula length times width. It helps me so it should help you.

The length of a rectangle is 99 cm less than four timesfour times its width. if the area of the rectangle is 1313 cm2 , find the dimensions of the rectangle.</span>

6 0

3 years ago

You scored 12, 8, 15, and 21 points during your first four basketball games. Find your mean score per game

lapo4ka [179]

Given:

You scored 12, 8, 15, and 21 points during your first four basketball games.

To find"

The mean score per game.

Solution:

We have,

Observations =12, 8, 15, and 21 points

Number of observations = 4