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NNADVOKAT [17]
3 years ago
9

If 1 pound = 0.454 kilograms, how many milligrams are in a pound?

Mathematics
2 answers:
IRISSAK [1]3 years ago
6 0

Answer:   454000\text{ milligrams}

Step-by-step explanation:

Given : 1 pound = 0.454 kilograms

We know that 1 kilogram= 1000000 milligrams

Then, \text{1 pound}=0.454\times1000000\text{ milligrams}

\Rightarrow\ \text{1 pound}=454000\text{ milligrams}

Therefore, there are 454000\text{ milligrams} in one pound .

WINSTONCH [101]3 years ago
5 0
There are 453,592 milligrams in lb
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Answer:

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8% in decimal form = 8/100 = 0.08

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To calculate the amount she now earns after the raise, add the 8% rise to the initial value:

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2 years ago
The Late Show with David Leterman is seen by a relatively large percentage of household members who record the show for viewing
Zanzabum

Answer:

a) Null hypothesis:\mu \leq 40000  

Alternative hypothesis:\mu > 40000  

b) t=\frac{41182-40000}{\frac{19990}{\sqrt{1700}}}=2.438    

c) The first step is calculate the degrees of freedom, on this case:  

df=n-1=1700-1=1699  

Since the sample size is large enough we cna use the z distribution as an approximation for the statsitic on this case.

Since is a one right tailed test the p value would be:  

p_v =P(t_{(1699)}>2.438)=0.0074  

d) If we compare the p value and the significance level given \alpha=0.01 we see that p_v so we can conclude that we have enough evidence to reject the null hypothesis at 1% of signficance.  So we can conclude that the true mean is higher than 40000 at the significance level assumed.

Step-by-step explanation:

Data given and notation  

\bar X=41182 represent the sample mean

s=19990 represent the sample standard deviation

n=1700 sample size  

\mu_o =40000 represent the value that we want to test

\alpha=0.01 represent the significance level for the hypothesis test.  

t would represent the statistic (variable of interest)  

p_v represent the p value for the test (variable of interest)  

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We need to conduct a hypothesis in order to check if the true mean is greater than 40000, the system of hypothesis would be:  

Null hypothesis:\mu \leq 40000  

Alternative hypothesis:\mu > 40000  

If we analyze the size for the sample is > 30 but we don't know the population deviation so is better apply a t test to compare the actual mean to the reference value, and the statistic is given by:  

t=\frac{\bar X-\mu_o}{\frac{s}{\sqrt{n}}}  (1)  

t-test: "Is used to compare group means. Is one of the most common tests and is used to determine if the mean is (higher, less or not equal) to an specified value".  

Part b: Calculate the statistic

We can replace in formula (1) the info given like this:  

t=\frac{41182-40000}{\frac{19990}{\sqrt{1700}}}=2.438    

Part c: P-value

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df=n-1=1700-1=1699  

Since the sample size is large enough we cna use the z distribution as an approximation for the statsitic on this case.

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If we compare the p value and the significance level given \alpha=0.01 we see that p_v so we can conclude that we have enough evidence to reject the null hypothesis at 1% of signficance.  So we can conclude that the true mean is higher than 40000 at the significance level assumed.

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Answer:

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