Posted by Roxanne Singleton on Monday, November 2, 2009 at 9:53am.
Measures of Central Tendency
Be sure to show your work so that partial credit may be awarded.
4. An MM207 statistics class surveyed 24 students to find out how many hours they spent doing homework during the previous week.
10 11 10 8 10 10 15 12 10 8 13 11
11 13 10 11 13 10 11 12 11 13 12 8
a. Calculate the mean for these data. (Round to 2 decimal places)
b. Determine the median for these data

Elementary Statistics need help ASAP  Roxanne Singleton, Monday, November 2, 2009 at 9:54am
Measures of Variation
Be sure to show your work
5. A placement test has a mean of 65 and a standard deviation of 2. A histogram of the data shows that the distribution is bellshaped. Using the Empirical Rule, what two values have about 95% of the curve between them? 
Elementary Statistics need help ASAP  SraJMcGin, Monday, November 2, 2009 at 10:08am
Here are tutorials to help you:
http://www.google.com/search?q=Measures+of+Central+Tendency+tutorial&ie=utf8&oe=utf8&aq=t&rls=org.mozilla:enUS:official&client=firefoxa
Sra 
Elementary Statistics need help ASAP  cindy, Friday, March 5, 2010 at 1:50pm
A survey was conducted to measure the height of men. In the survey, respondents were grouped by age. In the 20 – 29 age groups, the heights were normally distributed, with a mean of 69.7 inches and a standard deviation of 3.0 inches. A study participant is randomly selected.
Find the probability that his height is less than 68 inches