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3 years ago

Which is the most appropriate data display for the distance a person drives each month.

Mathematics

1 answer:

Leni [432]3 years ago

6 0

Answer:

How many miles that person has driven that day

Step-by-step explanation:

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What must be done to the wires used to make an electromagnet before they connect

CaHeK987 [17]

Step-by-step explanation:

To create a simple electromagnet, you'll need a source of electricity, a conductor, and metal. Wrap insulated copper wire tightly around an iron screw or nail before connecting the wire to a battery, and watch as your new electromagnet picks up small metal objects.

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3 years ago

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A sample of 1500 computer chips revealed that 37% of the chips fail in the first 1000 hours of their use. The company's promotio

andreyandreev [35.5K]

Answer:

$z=\frac{0.37 -0.39}{\sqrt{\frac{0.39(1-0.39)}{1500}}}=-1.59$

Step-by-step explanation:

Data given and notation

n=1500 represent the random sample taken

$\hat p=0.37$ estimated proportion of of chips fail in the first 100 hours

$p_o=0.39$ 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 actual percentage that fail is different from the stated percentage. Find the value of the test statistic.:

Null hypothesis: $p=0.39$

Alternative hypothesis: $p \neq 0.39$

When we conduct a proportion test we need to use the z statisitc, 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:

$z=\frac{0.37 -0.39}{\sqrt{\frac{0.39(1-0.39)}{1500}}}=-1.59$

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3 years ago

Container A has 800 ml of water and is leaking 6 ml per minute.

Fofino [41]

The answer is 50 minutes.
Explanation: 10*50=500, 1000-500=500
6*50=300, 800-300=500

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3 years ago

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What is 0.5×(-0.6) ×0.4= and pls show how

blondinia [14]

Answer:

$- 0.12$

Step-by-step explanation:

1) Solve inside the parentheses.

$(0.5 \times - 0.6)$

2) Simplify (0.5 × - 0.6 ) to -0.3.

$- 0.3 \times 0.4$

3) Simplify -0.3 × 0.4 to -0.12.

$- 0.12$

Therefor, the answer is -0.12 .

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3 years ago

A machine in a factory builds 15 toys in 135 min. How many toys does the machine build in 216 min?

irina1246 [14]

The answer is 24. To get this answer I divided 135 by 15 to see how many minutes it takes to make each toy. My answer was nine, so I divided 216 by nine and got the answer, 24.

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3 years ago

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