Which system of inequalities is represented by the graph?
2 answers:
Step 1
Find the equation of the inequality A (red line)
The equation of the red line is
------> see the x-intercept of the graph
The solution of the inequality A is the shaded area above the red dotted line
so
the equation of the inequality A is
Step 2
Find the equation of the inequality B (blue line)
The equation of the blue line is
------> see the graph, the slope is positive
The solution of the inequality B is the shaded area below the blue solid line
so
the equation of the inequality B is
therefore
<u>the answer is</u>
The system of inequalities is equal to
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Answer:
Since we FAIL to reject the null hypothesis, then if we construct an interval of 95% of confidence, the 0 should be included, because on the test hypothesis we conclude that there would be no significant difference between the means of the two groups analyzed, and the results obtained on the hypothesis test needs to be consistent with the confidence interval.
Step-by-step explanation:
A hypothesis is defined as "a speculation or theory based on insufficient evidence that lends itself to further testing and experimentation. With further testing, a hypothesis can usually be proven true or false".
The null hypothesis is defined as "a hypothesis that says there is no statistical significance between the two variables in the hypothesis. It is the hypothesis that the researcher is trying to disprove".
The alternative hypothesis is "just the inverse, or opposite, of the null hypothesis. It is the hypothesis that researcher is trying to prove".
represent the sample mean of calories for the meat hot dogs
represent the sample mean of calories for the beef hot dogs
The system of hypothesis on this case would be:
Null hypothesis:
Alternative hypothesis:
On this case we have the p value obtained, after calculate the statistic and we got that if we select a 5% significance level
we see that
and on this case we can FAIL to rejec the null hypothesis, so there is not a significant difference between the mean of the two tpes of hot dogs analyzed at 5% of significance.
And since we FAIL to reject the null hypothesis, then if we construct an interval of 95% of confidence, the 0 should be included, because on the test hypothesis we conclude that there would be no significant difference between the means of the two groups analyzed, and the results obtained on the hypothesis test needs to be consistent with the confidence interval.