The ratio of red cars to blue cars in a parking lot was 5:3. If there were 40 red cars
1 answer:
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Alright, lets get started.
The Denver office has 137 employees with an average salary of $67,013.
So the total salay of all employees at Denver office will be =
So the total salay of all employees at Denver office will be = $ 9180781
The Anchorage office has 25 employees with an average salary of $71,332.
So the total salary of employees at Anchorage office will be =
So the total salary of employees at Anchorage office will be = $ 1783300
So, complete total salary of employees at both offices will be =
So, complete total salary of employees at both offices will be = $ 10964081
Total number of employees at both offices are =
So, the average salary of employee across the company =
So, the average salary of employee across the company = 67679.5
Rounding off,
So, the average salary of employee across the company = $ 67680 : Answer
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Answer:
Step-by-step explanation:
Data given and notation
n=1000 represent the random sample taken
estimated proportion of residents that favored the annexation
is the value that we want to test
z would represent the statistic (variable of interest)
represent the p value (variable of interest)
Concepts and formulas to use
We need to conduct a hypothesis in order to test the claim that the true proportion is higher than 0.5:
Null hypothesis:
Alternative hypothesis:
When we conduct a proportion test we need to use the z statistic, and the is given by:
(1)
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 required 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 next step would be calculate the p value for this test.
Since is a right tailed test the p value would be: