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4 years ago

Jenny's math grades are 95, 82, 75, 100, 67, 89, 75, 80, 91, and 70. Make a stem and leaf plot for these grades.

Mathematics

2 answers:

11111nata11111 [884]4 years ago

7 0

6 I 7

7 I 0 5 5

8 I 0 2 9

9 I 1 5

10 I 0

Hope this helps!

Naddika [18.5K]4 years ago

4 0

Like the numbers up for a stem and leaf chart by doing like this: heres an example lets say put these numbers in stem and leaf: 12, 14, 21, 38, 45, 46

1 | 2, 4
2 | 1
3 |8
4 |5, 6

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Suppose 40% of the students in a university are baseball players. If a sample of 781 students is selected, what is the probabili

3241004551 [841]

Answer:

$P(p>0.43) = 0.0436$

Step-by-step explanation:

Given

$p = 40\%$ -- proportion of baseball players

$n = 781$ --- selected sample

Required

Determine P(p>43%)

First, calculate the z score using:

$Z = \frac{\^{p}-p}{\sqrt{\frac{p(1-p)}{n}}}$

This gives:

$Z = \frac{48\%-40\%}{\sqrt{\frac{40\% *(1 - 40\%)}{781}}}$

Convert % to decimal

$Z = \frac{0.43-0.40}{\sqrt{\frac{0.40 *(1 - 0.40)}{781}}}$

$Z = \frac{0.43-0.40}{\sqrt{\frac{0.40 *0.60}{781}}}$

$Z = \frac{0.43-0.40}{\sqrt{\frac{0.24}{781}}}$

$Z = \frac{0.03}{\sqrt{0.00030729833}}$

$Z = \frac{0.03}{0.01752992669}$

$Z = 1.71$

So:

$P(p>0.43) = P(Z>1.71)$

$P(p>0.43) = 1 - P(Z$

$P(p>0.43) = 1 - 0.9564$

$P(p>0.43) = 0.0436$

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3 years ago

Simplify the expression: Please helllppp

Agata [3.3K]

did you try to use a calculator ?

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3 years ago

Pls give the answer with step by step explanation... :)

Rina8888 [55]

Answer:

Step-by-step explanation:

so you do 1150 x 115% to give you the answer and then you get the answer of that and take away 1150 and you should get your answer

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3 years ago

Work out the value of 3 to the power of minus 2 give your answer as a fraction

aivan3 [116]

Your answer is 3 because all you do is form it in a fraction

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3 years ago

How do I solve this equation: 7x-4=3+8x

marusya05 [52]

Answer:

x=-7

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

7x−4=3+8x

7x+−4=3+8x

7x−4=8x+3

Step 2: Subtract 8x from both sides.

7x−4−8x=8x+3−8x

−x−4=3

Step 3: Add 4 to both sides.

−x−4+4=3+4

−x=7

Step 4: Divide both sides by -1.

−x/−1=7/−1

x=−7

6 0

3 years ago

Read 2 more answers