Homework Answers
Answer
We know that mean = (sum of all data values)/(total number of data values)
Calculation for 1990
we get, mean = (583+79+225)/3= 887/3 = 295.67
So, mean number of convictions in 1990 is 295.67
Calculation for 2009
mean = (sum of all data values)/(total number of data values)
we get, mean = (426+102+257)/3= 785/3 = 261.67
So, mean number of convictions in 2009 is 261.67
Add Answer to:
What is the mean number of convictions in 1990 and 2009?
Number of Public C 1990...
What is the range of convictions in 1990? In 2009? Which is greater? Number of Public...
What is the range of convictions in 1990? In 2009? Which is
greater?
Number of Public C 1990 2009 Govt Level No. of Convictions Govt.Level No of Convictions Federal426 Stale Local Federal 83 Stale 79 102 Local 225 257
Calculate the standard deviation for 1990 and 2009 Number of Public C 1990 2009 ot Level...
Calculate the standard deviation for 1990 and 2009
Number of Public C 1990 2009 ot Level No of Convictions Govt Level No of Convictions Federal426 102 257 Federal 83 State 79 Stale Local 225 Local
Which year appears to have more variability in number of convictions as measured by the standard...
Which year appears to have more variability in number of
convictions as measured by the standard deviation? Are the results
consistent with what you found using the range?
Nuwmber of Public Corrugticn Convictions by Ye 1990 2009 Got Level No of Coevictions Govt Level No of Coevictions l426 Federa State Local Federal 583 102 State 79 257 225
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5-8 show work
5. 6. At a local high school 5000 juniors and seniors recently took an aptitude test. The results of the exam were normally distributed with mean - 450 and o = 50. Calculate the following: a. The PERCENT of students to the nearest tenth of a percent that scored over 425 b. The number of students that scored more than 475 c. The probability of a student selected at random having scored between 400 and 575 A...
What is the range of convictions in 1990? In 2009? Which is
greater?
Number of Public C 1990 2009 Govt Level No. of Convictions Govt.Level No of Convictions Federal426 Stale Local Federal 83 Stale 79 102 Local 225 257
Calculate the standard deviation for 1990 and 2009
Number of Public C 1990 2009 ot Level No of Convictions Govt Level No of Convictions Federal426 102 257 Federal 83 State 79 Stale Local 225 Local
Which year appears to have more variability in number of
convictions as measured by the standard deviation? Are the results
consistent with what you found using the range?
Nuwmber of Public Corrugticn Convictions by Ye 1990 2009 Got Level No of Coevictions Govt Level No of Coevictions l426 Federa State Local Federal 583 102 State 79 257 225
as 2009 Mansour conducted a survey to estimate the average number of the hours studied weekly by college students. He chose random sample of 16 students and found that the average time they study weekdy was 15 hours with a standard deviation of 2 hours. (10 marks) a. What is the point estimate of the population mean? b. Which Test should Mansour use to find the mean confidence Interval (t or Z). Justify your answer? c. Using the 90% level...
need help answering these homework questions please
Many nations around the world have "privatized" their formerly government-run social security systems such as Canada, Chile, Denmark, Sweden, etc... and they now have plenty of cash reserves for the future. Conclusion: A typical university academic professor who is a devout Keynesian economist would also support the idea of privatizing a government run social security system. True or False True False During the Great Depression years, the politicians decided to raise the income...
5-8 show work
5. 6. At a local high school 5000 juniors and seniors recently took an aptitude test. The results of the exam were normally distributed with mean - 450 and o = 50. Calculate the following: a. The PERCENT of students to the nearest tenth of a percent that scored over 425 b. The number of students that scored more than 475 c. The probability of a student selected at random having scored between 400 and 575 A...
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