11.- Parkinson’s disease affects internally generated movements such as movements recalled from memory. Following is a stem-and-leaf diagram of the ages, in years, at which a sample of 14 patients experienced the onset of symptoms of Parkinson’s disease. How many of these 14 patients were: a). under 45 years old at the onset of symptoms? b). at least 65 years old at the onset of symptoms? c). between 50 years old and 64 years old, inclusive, at the onset of symptoms?

6) The mean salary of 5 employees is $41800. The employee salaries have 2 modes: $33000 and $51500. If the median salary gets a $1300 raise, then... Hint: It will help to write down what salaries you know of the five and think about how you normally calculate mean and median.. a) What is the new mean? New Mean = $ b) What is the new median?. New Median = $

41. Nineteen immigrants to the U.S were asked how many years, to the nearest year, they have lived in the U.S. The data are as follows: 2; 5; 7; 2; 2; 10; 20; 15; 0; 7; 0; 20; 5; 12; 15; 12; 4; 5; 10. Table 1.15 was produced. Data O 2 4 5 7 10 12 15 20 Frequency Relative Frequency 2 3 3 2 2 2 1 1 № 19 3 19 19 3 10 份 2 19 19 19 2 19 1 19 19 Cumulative Relative Frequency 0.1053 0.2632 0.3158 0.4737 0.5789 0.6842 0.7895 0.8421 1.0000 Table 1.15 Frequency of Immigrant Survey Responses M Fix the errors in Table 1.15. Also, explain how someone might have arrived at the incorrect number(s). b. Explain what is wrong with this statement: "47 percent of the people surveyed have lived in the U.S. for 5 years." c. Fix the statement in b to make it correct. d. What fraction of the people surveyed have lived in the U.S. five or seven years? e. What fraction of the people surveyed have lived in the U.S. at most 12 years? f. What fraction of the people surveyed have lived in the U.S. fewer than 12…

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