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3 years ago

Hii I really need help!!

Mathematics

1 answer:

borishaifa [10]3 years ago

4 0

Answer:

1.645 ft

Step-by-step explanation:

Divide the length of the board by the number of pieces it will be cut into

8.225/5=1.645 ft

You might be interested in

Suppose that you play the game with three different friends separately with the following results: Friend A chose scissors 100 t

Yanka [14]

Answer:

Friend A

$\hat p_A= \frac{100}{400}=0.25$

$z=\frac{0.25 -0.333}{\sqrt{\frac{0.333(1-0.333)}{400}}}\approx -3.47$

Friend B

$\hat p_B= \frac{20}{120}=0.167$

$z=\frac{0.167 -0.333}{\sqrt{\frac{0.333(1-0.333)}{120}}}\approx -3.80$

Friend C

$\hat p_C= \frac{65}{300}=0.217$

$z=\frac{0.217-0.333}{\sqrt{\frac{0.333(1-0.333)}{300}}}\approx -4.17$

So then the best solution for this case would be:

-3.47 (100 out of 400; 25%), -3.80 (20 out of 120; 16.7%), -4.17 (65 out of 300; 21.7%)

Step-by-step explanation:

Data given and notation

n represent the random sample taken

X represent the number of scissors selected for each friend

$\hat p=\frac{X}{n}$ estimated proportion of scissors selected for each friend

$p_o=\frac{1}{3}=0.333$ is the value that we want to test

$\alpha$ represent the significance level

z would represent the statistic (variable of interest)

$p_v$ represent the p value (variable of interest)

Concepts and formulas to use

We need to conduct a hypothesis in order to test the claim that the proportion that the friend will pick scissors is less than 1/3 or 0.333, the system of hypothesis would be:

Null hypothesis: $p\geq 0.333$

Alternative hypothesis: $p < 0.333$

When we conduct a proportion test we need to use the z statistic, and the is given by:

$z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}}$ (1)

The One-Sample Proportion Test is used to assess whether a population proportion $\hat p$ is significantly different from a hypothesized value $p_o$ .

Calculate the statistic

Since we have all the info requires we can replace in formula (1) like this:

Friend A

$\hat p_A= \frac{100}{400}=0.25$

$z=\frac{0.25 -0.333}{\sqrt{\frac{0.333(1-0.333)}{400}}}\approx -3.47$

Friend B

$\hat p_B= \frac{20}{120}=0.167$

$z=\frac{0.167 -0.333}{\sqrt{\frac{0.333(1-0.333)}{120}}}\approx -3.80$

Friend C

$\hat p_C= \frac{65}{300}=0.217$

$z=\frac{0.217-0.333}{\sqrt{\frac{0.333(1-0.333)}{300}}}\approx -4.17$

So then the best solution for this case would be:

-3.47 (100 out of 400; 25%), -3.80 (20 out of 120; 16.7%), -4.17 (65 out of 300; 21.7%)

6 0

4 years ago

What is the value of 4.25 divided by 17 x 122?

Lapatulllka [165]

<span>0.002049 is the correct answer im not quite sure but it should be</span>

3 0

4 years ago

Read 2 more answers

How many millimetres are there in 5 and a half litres

xeze [42]

There are 1000 millileters in on liter so
5 x 1000=5000
1/2 x 1000= 500
5000 +500= 5500 millliters

7 0

4 years ago

Find the absolute value of x: (x+8)=-2

skad [1K]

Given that the absolute value of a function is its positive value and the value of x is -10, hence the absolute value of x is 10

<h3>How to find the absolute value of a function?</h3>

The absolute value is the positive value of any given value.

Given the equation

x + 8 = -2

Determine the value of x

x = -2 - 8
x = -10

Since x is -10, hence the absolute value of x is 10

Learn more on absolute value here: brainly.com/question/24368848

3 0

3 years ago

A battery is 10% charged and is charging at a constant rate. The graph shows the battery’s charge over time. What is the slope o

Y_Kistochka [10]

Answer:

The slope of the line is 3/4

Step-by-step explanation:

There is a difference of 3 in the y coordinate and 4 for the x coordinate from each exact point.

8 0

4 years ago