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Category > Statistics Posted 16 May 2017 My Price 7.00

THE ARITHMETIC MEAN

 

THE ARITHMETIC MEAN

1. Astudent received grades of 85, 76, 93, 82, and 96 in five subjects. Determine the arithmetic mean of the grades.

2. The reaction times of an individual to certain stimuli were measured by a psychologist to be 0.53, 0.46, 0.50,

0.49, 0.52, 0.53, 0.44, and 0.55 seconds respectively. Determine the mean reaction time of the individual to the stimuli.

3. A set of numbers consists of six 6’s, seven 7’s, eight 8’s, nine 9’s and ten 10’s. What is the arithmetic mean of the numbers?

4. A student’s grades in the laboratory, lecture, and recitation parts of a physics course were 71, 78, and 89, respectively.

(a) If the weights accorded these grades are 2, 4, and 5, respectively, what is an appropriate average grade?

(b) What is the average grade if equal weights are used?

5. Three teachers of economics reported mean examination grades of 79, 74, and 82 in their classes, which consisted of 32, 25, and 17 students, respectively. Determine the mean grade for all the classes.

6. The mean annual salary paid to all employees in a company is $36,000. The mean annual salaries paid to male and female employees of the company is $34,000 and $40,000 respectively. Determine the percentages of males and females employed by the company.

 
 

Answers

Alpha Geek
(8)
Status NEW Posted 16 May 2017 06:05 AM My Price 7.00

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file 1494918015-Answer.docx preview (331 words )
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