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3 years ago

7

..1+4=5. 2+5=12. 3+6=21. 8+11=40 or this could be 96 which is right and why

1 answer:

andre [41]3 years ago

7 0

Multiply the numbers being added then add the first number. 4X1=4, 4+1=5.
2X5=10, 10+2=12. 11X8=88, 88+8=96. I'm not sure how to get 40, though.
Hope I could help.

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Answer:

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2 years ago

Which unit would you need fewer of to measure a tree?

NemiM [27]

Answer:

<em />

<em>You would need fewer the unit</em><em><u> </u></em><u>kilometer (km) </u><em>to measure a tree.</em>

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Most of the trees meausre in the range of 1 to 20 meters. That would be 0.001 km to 0.020 km.

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3 years ago

Consider a drug testing company that provides a test for marijuana usage. Among 310 tested subjects, results from 28 subjects w

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Answer:

$z=\frac{0.0903 -0.1}{\sqrt{\frac{0.1(1-0.1)}{310}}}=-0.569$

The p value for this case can be calculated with this probability:

$p_v =P(z$

Since the p value is higher than significance level we don't have enough evidence to conclude that the true proportion is significantly less than 0.1

Step-by-step explanation:

Information given

n=310 represent th sample selected

X=28 represent the subjects wrong

$\hat p=\frac{28}{310}=0.0903$ estimated proportion of subjects wrong

$p_o=0.1$ is the value to verify

$\alpha=0.05$ represent the significance level

t would represent the statistic

$p_v$ represent the p value

System of hypothesis

We want to test the claim that less than 10 percent of the test results are wrong ,and the hypothesis are:

Null hypothesis: $p\geq 0.1$

Alternative hypothesis: $p < 0.1$

The statistic is given by:

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

Replacing the info we got:

$z=\frac{0.0903 -0.1}{\sqrt{\frac{0.1(1-0.1)}{310}}}=-0.569$

The p value for this case can be calculated with this probability:

$p_v =P(z$

Since the p value is higher than significance level we don't have enough evidence to conclude that the true proportion is significantly less than 0.1

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3 years ago

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SVETLANKA909090 [29]

Answer:

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Step-by-step explanation:

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3 years ago

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Olegator [25]

Answer:

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Step-by-step explanation:

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$SA'=4/9\ SA$

The surface area is multiplied by 4/9.

6 0

3 years ago