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sergey [27]
3 years ago
11

Brenda is offered a job at a base salary of $450 per

Mathematics
1 answer:
andreyandreev [35.5K]3 years ago
5 0

Answer:

$23,240

Step-by-step explanation:

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Fractions is greater than 2/5 and less than 3/5?
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Answer:

1/2

Step-by-step explanation:

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Georgie joins a gym. she pays $25 to sign-up and then $15 each month.
Len [333]
In the y=mx+b format or a linear equation, this would be y=15x+25
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The mayor of a town has proposed a plan for the annexation of an adjoining community. A political study took a sample of 1000 vo
Georgia [21]

Answer:

z=\frac{0.54 -0.5}{\sqrt{\frac{0.5(1-0.5)}{1000}}}=2.530  

p_v =P(z>2.530)=0.0057  

Step-by-step explanation:

Data given and notation

n=1000 represent the random sample taken

\hat p=0.54 estimated proportion of residents that favored the annexation

p_o=0.5 is the value that we want to test

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 true proportion is higher than 0.5:  

Null hypothesis:p \leq 0.5  

Alternative hypothesis:p > 0.5  

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 required we can replace in formula (1) like this:  

z=\frac{0.54 -0.5}{\sqrt{\frac{0.5(1-0.5)}{1000}}}=2.530  

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 right tailed test the p value would be:  

p_v =P(z>2.530)=0.0057  

7 0
3 years ago
Solve the problem below, simplify, add steps<br> 1/3 √21 minus 2/3 √3 * √7
iogann1982 [59]
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</span></span>
4 0
3 years ago
What is log25 with an exponent of 1/5?
Tomtit [17]

Log (25¹/⁵)  =  (1/5) log(25)  =  (1/5) (1.3979)  =  0.2796
6 0
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