Saturday

October 25, 2014

October 25, 2014

Posted by **lashawn** on Sunday, December 16, 2012 at 7:12pm.

The average score of the first exam for the class is an 81%.Claim 2: The average price for a gallon of gas is more than $3.00.

- statistics -
**PsyDAG**, Monday, December 17, 2012 at 11:36pmIt depends on what question you are asking.

Ho: mean = 81%

Ha: mean ≠ 81%

Two-tailed

Ho: mean = $3.00

Ha: mean > $3.00

I'm not sure what you mean by right-tailed or left-tailed. I don't use those specific terms.

- statistics (more) -
**PsyDAG**, Tuesday, December 18, 2012 at 12:52amUpon further thought, right-tailed may be the equivalent to positively skewed (deviant scores at higher values). If so, the second Ha would be right-tailed.

The mean is influenced by deviant scores, like a fulcrum (balance point). Thus Ha for "more than $3.00" would be looking for a higher mean and "right-tailed."

**Answer this Question**

**Related Questions**

Statistics - For all of the following use the five step process to solve the ...

statistics - 5. A teacher wishes to compare two different groups of students ...

statistics - Which of the following is NOT a required step for a significance ...

Statistics - Hi, Could anyone help me please, because I'm not sure with my ...

statistics - Hi, Could anyone help me please, because I'm not sure with my ...

Stat - A company with a fleet of 150 cars found that the emission systems of 7 ...

statistics - Question Details The following data was collected to determine ...

Statistics - What is the difference between the null and alternative hypotheses ...

Statistics - Blood samples from 10 persons were sent to each of two labs for ...

Statistics - A skeptical paranormal researcher claims that the proportion of ...