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larrbear64
17.05.2021 •
Mathematics
Find the distance between the two points rounding to the nearest tenth (if necessary). (-6, 6) and (3, -6)
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Ответ:
15
Step-by-step explanation:
Ответ:
1) Null hypothesis:
Alternative hypothesis:
A. H_0: p = 0.5, H_A: p > 0.5
2)
3)
4) The p value obtained was a very low value and using the significance level given
we have
so we can conclude that we have enough evidence to reject the null hypothesis
B. Reject H_0
Step-by-step explanation:
Data given and notation
n=1475 represent the random sample taken
Confidence=90% or 0.90
z would represent the statistic (variable of interest)
Concepts and formulas to use
We need to conduct a hypothesis in order to test the claim that majority of Americans think the Civil War is still relevant to American politics and political life.:
Null hypothesis:
Alternative hypothesis:
A. H_0: p = 0.5, H_A: p > 0.5
When we conduct a proportion test we need to use the z statistic, and the is given by:
The One-Sample Proportion Test is used to assess whether a population proportion
is significantly different from a hypothesized value
.
Calculate the statistic
Since we have all the info requires we can replace in formula (1) like this:
Statistical decision
It's important to refresh the p value method or p value approach . "This method is about determining "likely" or "unlikely" by determining the probability assuming the null hypothesis were true of observing a more extreme test statistic in the direction of the alternative hypothesis than the one observed". Or in other words is just a method to have an statistical decision to fail to reject or reject the null hypothesis.
The significance level provided
. The next step would be calculate the p value for this test.
Since is a right tailed test the p value would be:
So the p value obtained was a very low value and using the significance level given
we have
so we can conclude that we have enough evidence to reject the null hypothesis
B. Reject H_0