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Lana71 [14]
3 years ago
11

Madison deposited $18 in a savings account that earns 2.5% simple interest. Which graph represent this scenario

Mathematics
2 answers:
Dmitriy789 [7]3 years ago
8 0
The answer is 7.20 because $18 divided by 2.5% is 7.20
zhenek [66]3 years ago
7 0

Answer:

Please find the attachment for the required graph.

Step-by-step explanation:

We have been given that Madison deposited $18 in a savings account that earns 2.5% simple interest.

The graph of the given situation would be a linear function.

We know that simple interest formula is in form A=P+Prt, where,

A = Final amount,

P = Principal amount,

r = Interest rate in decimal form,

t = Time in years.

Let us convert given interest rate in decimal form.

r=\frac{2.5}{100}=0.025

Substitute the given values in above formula:

A=18+18*0.025*t

A=18+0.45t

The equation representing the given scenario would be y=18+0.45x.

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Answer:

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Step-by-step explanation:

Data given and notation    

\bar X=4000 represent the average score for the sample    

s=12000 represent the sample standard deviation    

n=200 sample size    

\mu_o =39000 represent the value that we want to test    

\alpha represent the significance level for the hypothesis test.    

z would represent the statistic (variable of interest)    

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

State the null and alternative hypotheses.    

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What are H0 and Ha for this study?    

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Alternative hypothesis :\mu \neq 39000    

Compute the test statistic  

The sample size is large enough to assume the distribution for the statisitc normal. The statistic for this case is given by:    

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

z-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".    

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

z=\frac{40000-39000}{\frac{12000}{\sqrt{200}}}=1.179    

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

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Conclusion    

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