Solve the following system of equations. 3x + 5y = 5
7x + 5y = 25

i need the value of x and y.

x=5 and y=-2

Step-by-step explanation:

3x+5y=5

-(7x+5y=25)

-4x=-20

x=5

plug 5 into one of the equations. 3(5)+5y=5

y= -2

Based on the statistical solution one can conclude that 3% of users develop adverse reaction of nausea and it appears a drug problem.

Step-by-step explanation:

Given information:

Number of patient = 5783

Adverse reaction developed = 153

Significance level = 0.05

Percentage of patients that develop Nausea

%

Now, to test hypothesis

Put the null hypothesis as %

So, alternative hypothesis will be %

Therefore ,

The test statistic is

Where,

On solving above equation we get

From which we conclude that

As we have our value less than the confidence level of 0.05%

We can conclude that ,nausea appear to be a problematic adverse reaction.

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