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2 years ago

(WORTH 70 PLS HELP) What percent of the values represented in this box-and-whisker plot are less than 20?

Mathematics

1 answer:

Shtirlitz [24]2 years ago

5 0

Answer:

About 25%

Step-by-step explanation:

The median is 25, and you know there are quartiles. From the median to a consecutive quartile, there is a range of 25%. For less than 20, It's from 5-20. Since there is a consecutive quartile, you get 25%!

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Teen Court is a juvenile diversion program designed to circumvent the formal processing of first-time juvenile offenders within

valentinak56 [21]

Answer:

Z-statistic = 1.4017 < 1.96 at 0.05 level of significance

Null hypothesis is accepted

The data suggest that the true proportion of Teen Court individuals who recidivate during the specified follow-up period differs from the proportion of Department of Juvenile Services individuals

Step-by-step explanation:

Step(i):-

Given first sample size (n₁ ) = 57

Of the 57 Teen Court individuals, 18 subsequently recidivated during the 18-month follow-up period

First sample proportion

$p^{-} _{1} = \frac{x_{1} }{n_{1} } = \frac{18}{57} =0.3157$

Second sample proportion

$p^{-} _{2} = \frac{x_{2} }{n_{2} } = \frac{11}{54} =0.2037$

Null Hypothesis : p₁⁻ = p₂⁻

Alternative Hypothesis : p₁⁻ ≠ p₂⁻

Step(ii):-

Test statistic

$Z = \frac{p_{1} ^{-} -p^{-} _{2} }{\sqrt{PQ(\frac{1}{n_{1} } +\frac{1}{n_{2} } )} }$

where

$P = \frac{n_{1}p^{-} _{1} +n_{2} p^{-} _{2} }{n_{1} +n_{2} }$

$P = \frac{57 X0.3157+0.2037X54}{54+57} = 0.2612$

Q = 1 - P = 1 - 0.2612 = 0.7387

$Z = \frac{0.3157-0.2037}{\sqrt{0.2612 X0.7387 (\frac{1}{57} +\frac{1}{54} )} }$

Z = 1.4017

Level of significance ∝ =0.05

The tabulated value Z₀.₀₅ = 1.96

Z-statistic = 1.4017 < 1.96 at 0.05 level of significance

Null hypothesis is accepted

The data suggest that the true proportion of Teen Court individuals who recidivate during the specified follow-up period differs from the proportion of Department of Juvenile Services individuals

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3 years ago

State how many solutions, 3 + 2x + 1 = 2x + 3

AlexFokin [52]

Answer:

Step-by-step explanation:

3 + 2x + 1 = 2x + 3

2x + 4 = 2x + 3

4 ≠ 3

no solution

5 0

4 years ago

Few math questions TIME IS RUNNING OUT!! PLEASE HELP!!!!

svetlana [45]

1.

Answer D. (75%)

2.

A > 1 so answers B and D. (1.3 and 3.33)

3.

Answer B. (1.04)

4.

This one is strange but answer C (128 players).

5.

Answer D. (13.7%)

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3 years ago

Help, middle school homework

Vesna [10]

The answer is 180°

Angles between straight lines are 180°

Hope this helps :))

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3 years ago

Teddy will buy at least 15 bags of ice for the graduation picnic. Each large bag of ice costs $4.00, and each small bag of ice c

anastassius [24]

Answer:

Step-by-step explanation:

Let number of large bags be x

Teddy will buy at least 15 bags of ice for the graduation picnic.

Each large bag of ice costs $4.00, and each small bag of ice costs $2.50. He will spend up to $50 on ice. The set of inequalities that describe this scenario are

4x + 2.5y lesser than or equal 50

x + y greater than 15

The combination of bags of ice that Teddy can buy is

b) 6 large bags and 10 small bags

From the option b, the total number of large and small bags is greater than 15 and the total cost is 49( it doesn't exceed 50)

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4 years ago