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4 years ago

Make a box of whisker plot for the data what is the upper quartile value 42,48,43,65,58,47,60,56,52,64,51,66,56,62

1 answer:

7 0

First, you would want to reorder the numbers from least to greatest.
42,43,47,48,51,52,56,56,58,60,62,64,65,66
Then find the median which is 56
Next add all upper quartile numbers so 56+58+60+62+64+65+66=431
Last divide the sum of the upper quartile by the median to get the upper quartile value. 431/56= 7.69642857

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Rachel has 31,672 in a savings account that earns 5% interest per year. The only interest is not compounded. To the nearest cent

timofeeve [1]

Answer:

$1583.60 in interest (i), in addition to her savings (s) of $31,672.00

$33,255.60 total (t) after one year.

Step-by-step explanation:

$1583.60(i)(5%)+$31,672.00(s)= $33,255.60(t)

4 0

3 years ago

The Eagle Ridge Contractors Association claims the average price of a home in their subdivision is $125,150 with a standard devi

jonny [76]

Answer:

The test value is z = -1.31.

Step-by-step explanation:

The Eagle Ridge Contractors Association claims the average price of a home in their subdivision is $125,150.

This means that the null hypothesis is that the mean is this value, that is:

$H_0: \mu = 125150$

The Eagle Ridge Home Owners Association is interested in knowing if the costs of homes for sale in this subdivision are actually lower than claimed.

This means that at the alternate hypotehsis we test that the mean is lower than that value, that is:

$H_a: \mu < 125150$

The test statistic is:

$z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}$

In which X is the sample mean, $\mu$ is the value tested at the null hypothesis, $\sigma$ is the standard deviation and n is the size of the sample.

125150 is tested at the null hypothesis:

This means that $\mu = 125150$

Standard deviation of $7,350.

This means that $\sigma = 7350$

A sample of 36 homes for sale in this subdivision had an average selling price of $123,550.

This means that $n = 36, X = 123550$

Compute the test value.

$z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}$

$z = \frac{123550 - 125150}{\frac{7350}{\sqrt{36}}}$

$z = -1.31$

The test value is z = -1.31.

5 0

3 years ago

Adjacent angles have no common interior points

qwelly [4]

They share a vertex and side, but do not overlap

Hope this helps

4 0

4 years ago

Given the system of inequalities: 4x – 5y < 1 One-halfy – x < 3 Which shows the given inequalities in slope-intercept form

liberstina [14]

Answer:

Option 2

Step-by-step explanation:

Just got it right

9 0

4 years ago

Read 2 more answers

Can someone help me with number 19 please?

andreyandreev [35.5K]

I think I can.
Let's do it together:

Let's call the number of buses 'B', and the number of vans 'V'.
(Pretty clever so far, don't you think ?)

OK. What do we know ?

-- Each bus holds 51 passengers. The number of passengers in 'B' buses is 51B.

-- A van holds 10 passengers. The number of passengers in 'V' vans is 10V.

-- The total number of passengers ... (51B + 10V) ... is 142.

-- The total number of vehicles ... (B + V) ... is 6, because there are 6 drivers.

Can you make a system of equations out of that information yet ?
How about this:

 51B + 10V = 142
 B + V = 6

I really think you can handle it from here.
=======================================

Multiply the 2nd equation by 10 :

 51B + 10V = 142
 10B + 10V = 60

Subtract the 2nd equation from the 1st one:

 41B = 82

Divide each side by 41:  B = 2 buses

2 buses . . . . 2 drivers . . . . 2 x 51 = 102 passengers

4 vans . . . . . 4 drivers . . . . . 4 x 10 = 40 passengers

6 vehicles . . . 6 drivers . . . . . 102 + 40 = 142 passengers

7 0

3 years ago