Below is the frequency distribution of the weights (in kg) of some sample of teen-agers. Weight(in kg) f
[41-45] 2
[46-50] 5
[51-55] 7
[56-60] 4
[61-65] 1
[66-70] 1
1. How many respondents were in the study?
2. What is the mean weight of the group?
3. Which is the median class?
4. What is the lower boundary of the median class?
5. What is , the less than cumulative frequency below the before the class?
6. What is the frequency of the median class?
7. What is the width of the median class?
8. What is the median score?
9. Which is the modal class?
10. What is the modal score?

Cass decided to sell game programs for the hockey game. the printing cost was over 20 cents per program with a selling price of 50 cents each. cass sold all but 50 of the programs, and made a profit of $65. how many programs were printed? letting p represent the number of programs printed, set up an equation that describes this situation. then solve your equation for p.

A(1,1) b(-3,0) c(-4,-1) d(3,-2) drag it to correct position

Two researchers are attempting to create a new psychotherapy protocol that more reduces panic attacks. they believe that they have succeeded and are now in the clinical trial period of their protocol's development. they are working with several cohort groups, some of which have been through the new protocol, while others have done the standard protocol currently recommended. if these researchers are interested in evaluating the difference in the percentage of test subjects who successfully decreased their panic attacks in 2 months on the new protocol versus the percentage of test subjects who successfully decreased their panic attacks in 2 months with the traditional protocol, which of the following statistical tests would be most appropriate? a. analysis of variance (anova) b. correlation c. chi-square test d. paired t-test e. independent t-test