Hypothesis Testing: number of homeruns for Natl Lg leader

[ridley1013]

Listed below are the # of homeruns for the National League leader over the last 20 years. Assuming that # of homeruns is normally distributed, if this is sample data collected from a population of all past & future homerun leaders, test the claim that the mean homerun leader has less than 47 homeruns, where ?=.05. Set up & complete the appropriate hypothesis test. For this data, also compute the p-value. Finally, compute 85% & 98% Confidence Intervals for this data.

I hope it's big enough to see properly...(if not the #s are: 49,39,47,40,38,35,46,43,40,47,49,70,65,50,73,49,47,48,51,58 (sum of all #s = 984))

Okay, I'm assuming this is a left-tailed test since it asking about "less than" & that p < .05? How will I know which is the appropriate test? Am I correct in assuming that 85% is 1-.85 & 98% is 1-.98?

If anyone can help, I'd appreciate it.

Thank you.

 

[stapel]

I hope it's big enough to see properly...

Um... no, it's not. :shock:

(if not the #s are: 49,39,47,40,38,35,46,43,40,47,49,70,65,50,73,49,47,48,51,58 (sum of all #s = 984))

Are those numbers broken up into columns or rows of some sort...? With headers or names or classifications of some manner...?

Please reply with clarification, including a clear statement of the exercise. It would probably help if you copied the table into "

" tags, as this will be large and will preserve spacing. And also kindly include the [i]exact[/i] text of and instructions for the exercise.

Thank you! :D

Eliz.

 

[ridley1013]

Sorry about that...

The problem states:
Listed below are the # of homeruns for the National League leader over the last 20 years. Assuming that # of homeruns is normally distributed, if this is sample data collected from a population of all past & future homerun leaders, test the claim that the mean homerun leader has less than 47 homeruns, where ?=.05. Set up & complete the appropriate hypothesis test. For this data, also compute the p-value. Finally, compute 85% & 98% Confidence Intervals for this data.

Since the picture wouldn't size properly, I had to put the table in by hand. Homework was in a Word document & when I tried to copy & paste, it was all jumbled together:

Year (Homerun)
2006 (58)
2005 (51)
2004 (48)
2003 (47)
2002 (49)
2001 (73)
2000 (50)
1999 (65)
1998 (70)
1997 (49)
1996 (47)
1995 (40)
1994 (43)
1993 (46)
1992 (35)
1991 (38)
1990 (40)
1989 (47)
1988 (39)
1987 (49)

(The sum of all the homeruns is 984. The mean is 49.2)

I'm assuming this is a left-tailed test since it asking about "less than" & that p < .05? How will I know which is the appropriate test? Am I correct in assuming that 85% is 1-.85 & 98% is 1-.98?

If anyone can help (or at least point me in the right direction), I'd appreciate it.

Thank you.