Simplify 15x-3/ 5x² - 11x +2 + x-5/2x² - 11x +5
2 answers:
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Answer:
b.
Step-by-step explanation:
Notation
represent the number of successes for the event 1
represent the number of successes for the event 2
represent the sample for the event 1
represent the sample for the event 2
Concepts and formulas to use
We need to conduct a hypothesis in order to test if two proportions are equal, the system of hypothesis are:
Null hypothesis:
Alternative hypothesis:
When we conduct a proportion test we need to use the z statistic, and the is given by:
(1)
The Two Sample Proportion Test is used to assess whether a population proportion is significantly (different, higher or less) from another proportion value
.
The best estimate to the polled estimate for p is given by: