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3 years ago

When taking a long road trip, plan rest stops before you leave - at least once every __________

1 answer:

5 0

I think the correct answer would be option B. When taking a long road trip, plan rest stops before you leave - at least once every two hours or 100 miles. In this way, you would be awake for the whole road trip. Also, you can attend to your personal needs like eating and going to the bathroom. Also, with this you would be able enjoy more of your trip, you would be able to see certain scenery closely and clearly rather than going on the road trip continuously until you reached your destination where in the long run you would just be bored and be sleepy.

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The data given below consists of the number of children with food allergies at a sample of elementary schools: 3, 9, 5, 5, 14, 1

Mice21 [21]

Answer:

z -score = 0.0459

Step-by-step explanation:

Given that:

the number of children with food allergies at a sample of elementary schools: 3, 9, 5, 5, 14, 10, 5, 11, 9, 6, 1, 8, 10, 7, 9, 13, 18, 9, 8, 11, 9, 7, 6, 14, 12.

The objective is to find the z- score , but before we can do that , we need to determine the mean and the standard deviation of the sample.

Mean = sum of the sample/ total number of the sample

Mean = (3+9+ 5+ 5+ 14+ 10+ 5+ 11+ 9+ 6+ 1+ 8+ 10+ 7+ 9+13+ 18+ 9+ 8+11+ 9+ 7+ 6+ 14+ 12)/25

Mean = 219/25

Mean = 8.76

Standard deviation = $\sqrt{\dfrac {\sum (x_i - \mu)^2}{N}}$

Mean (in order )= 1, 3,5,5,5,6,6,7,7,8,8,9,9,9,9,9,10,10,11,11,12,13,14,14,18)

Standard deviation = $\sqrt{\dfrac { (8.76 - 1)^2}{25} + \dfrac { (8.76 - 3)^2}{25} +\dfrac { (8.76 - 5)^2}{25} +...+ \dfrac { (8.76 - 18)^2}{25} }$

Standard deviation = 5.2174

The standard z score formula is:

$z = \dfrac{X- \mu}{\sigma}$

where X = median (13th observation ) = 9

$z = \dfrac{9- 8.76}{5.2174}$

$z = \dfrac{0.24}{5.2174}$

z -score = 0.0459

4 0

3 years ago

Approximately how many times greater is 9.75 * 10^6 than 1.25 * 10^2?

alexgriva [62]

9.75 / 1.25 = 7.8

10^6 - 10^2 = 10^4

= 7.8 x 10^4 greater

5 0

3 years ago

Do you want to $140 to your friend he pays you back $270 what interest rate did you charge your friend

ExtremeBDS [4]

Answer:

the interest rate is 92.86%

Step-by-step explanation:

270-140= 130

the %interest= (130/140)×100%

92.86%

3 0

3 years ago

HELP ME PLEASE IM DUMB

m_a_m_a [10]

Answer:

-17/12

Step-by-step explanation:

-(2/3)-(3/4)

-(8/12)-(9/12)

-17/12

6 0

3 years ago

Please explain how to do this im confused

Anit [1.1K]

Answer:

70° , 70°

Step-by-step explanation:

The 2 angles are corresponding and are congruent, then

23x + 1 = 4 + 22x ( subtract 22x from both sides )

x + 1 = 4 ( subtract 1 from both sides )

x = 3

Then the angles are

23x + 1 = 23(3) + 1 = 69 + 1 = 70°

4 + 22x = 4 + 22(3) = 4 + 66 = 70°

8 0

2 years ago

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