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Varvara68 [4.7K]
3 years ago
13

How do i find the answer?

Mathematics
2 answers:
kupik [55]3 years ago
7 0
The speed was 1 1/8 miles per hour. Hope I was able to help

Savatey [412]3 years ago
3 0

distance = rate * time

rate = distance / time

rate = .75 miles / .666666 hours

rate = 1.125 miles per hours (.125 = (1/8) ) so

rate = 1 plus 1/8 miles per hour. answer is B

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Integrated circuits consist of electric channels that are etched onto silicon wafers. A certain proportion of circuits are defec
boyakko [2]

Answer:

z=\frac{0.033 -0.05}{\sqrt{\frac{0.05(1-0.05)}{1000}}}=-2.467  

p_v =P(Z>-2.467)=0.0068  

So the p value obtained was a very low value and using the significance level assumed for example \alpha=0.05 we have p_v so we can conclude that we have enough evidence to reject the null hypothesis, and we can said that at 5% of significance the proportion of circuits that show evidence of undercutting is significantly less than 0.05.  

Step-by-step explanation:

1) Data given and notation  

n=1000 represent the random sample taken

X=33 represent the number of circuits that show evidence of undercutting

\hat p=\frac{33}{1000}=0.033 estimated proportion of circuits that show evidence of undercutting

p_o=0.05 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)  

2) Concepts and formulas to use  

We need to conduct a hypothesis in order to test the claim that they reduce the rate of undercutting to less than 5%.:  

Null hypothesis:p\geq 0.05  

Alternative hypothesis:p < 0.05  

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.

3) Calculate the statistic  

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

z=\frac{0.033 -0.05}{\sqrt{\frac{0.05(1-0.05)}{1000}}}=-2.467  

4) Statistical decision  

It's important to refresh the p value method or p value approach . "This method is about determining "likely" or "unlikely" by determining the probability assuming the null hypothesis were true of observing a more extreme test statistic in the direction of the alternative hypothesis than the one observed". Or in other words is just a method to have an statistical decision to fail to reject or reject the null hypothesis.  

The next step would be calculate the p value for this test.  

Since is a left tailed test the p value would be:  

p_v =P(Z>-2.467)=0.0068  

So the p value obtained was a very low value and using the significance level assumed for example \alpha=0.05 we have p_v so we can conclude that we have enough evidence to reject the null hypothesis, and we can said that at 5% of significance the proportion of circuits that show evidence of undercutting is significantly less than 0.05.  

4 0
2 years ago
Write a fraction that is less than 5/6 and has a denominator of eight
jonny [76]

Answer: (1/8) (2/8) (3/8) (4/8) (5/8) any of these would work

Step-by-step explanation:

all of these are lower in value in comparison to 5/6

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Answer:

wassup

Step-by-step explanation:

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I’d appreciate an answer ;)
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Answer: Hope you have a good day or night!

Step-by-step explanation:

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A triangle has one angle that measures 15 degrees, one angle that measures 44 degrees, and one angle that measures 121 degrees.
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Scalene triangle since all 3 interior angles are different values.
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