Answer:
Step-by-step explanation:
Multiply those together and combine like terms. Then make sure you order the terms in descending powers.
What are the x-intercepts of the graph below of the function below y=x^2+2x-15
2 answers:
Answer:
Option A - (-5,0) and (3,0).
Step-by-step explanation:
Given : Function
To find : What are the x-intercepts of the function ?
Solution :
The x-intercept means when y became zero i.e. y=0,
Solve the quadratic equation by middle term split,
The x-intercepts are (-5,0) and (3,0).
Therefore, Option A is correct.
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Answer:
The proportions differ from those reported in the survey.
Step-by-step explanation:
The Chi-square goodness of fit test would be used to determine whether the proportions differ from those reported in the survey.
The hypothesis for the test can be defined as follows:
<em>H</em>₀: The proportions does not differ from those reported in the survey.
<em>Hₐ</em>: The proportions differ from those reported in the survey.
Assume that the significance level of the test is, α = 0.01.
The Chi-square test statistic is given by:
Consider the Excel sheet provided.
The Chi-square test statistic value is 191.32.
The <em>p</em>-value of the test is:
The <em>p</em>-value of the test is very small. The null hypothesis will be rejected at 1% level of significance.
Thus, concluding that the proportions differ from those reported in the survey.
