Sprint 7:22 PM 38% www.whiteboard.com Name The following distribution represents a sample of employees at the Acme Company and the number of days of paid vacation each employee receives per year: Vacation Days midpoint # of Employees B= 25 = 29 points] Construct a histogram for the vacation times of the employees: (S points] Find the mean vacation time of the Acme Company employees: [5 points] Does your result in part b seem reasonable? Briefly explain [4 points] Find the standard deviation of the vacation times of the Acme Company employees.
Added by Jesse D.
Step 1
To construct a histogram, we need to first determine the range of vacation days and the width of each interval. The range of vacation days is from 0 to 50, and we can choose an interval width of 5. Then, we can count the number of employees in each interval and Show more…
Show all steps
Close
Your feedback will help us improve your experience
Donna Densmore and 87 other Intro Stats / AP Statistics educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
PROBLEMS 7-1. A simple random sample of 8 employees of a large corporation provided the following information. Employee 1 2 3 4 5 6 7 8 Age 25 32 26 40 50 54 22 23 Gender M M M M F M M F a. Determine the point estimate for the average age of all employees. b. What is the point estimate for the standard deviation of the age of all employees? c. Determine the point estimate for the proportion of all employees who are female. d. What is the point estimate of the standard deviation of the proportion of all employees who are females? ANS: a. 34 b. 12.57 c. 0.25 d. 0.1531
Jason H.
(5 marks) The following data represent the salaries (in thousands of dollars) of a sample of employees of a firm: 42, 23, 29, 24, 15, 24, 20, 22, 27, 35. Find the value of the 30th percentile. Interpret it. (2 marks) Find the median. (1 mark) Find the interquartile range. (2 marks) 2. (4 marks) A set of data from a bell shaped distribution has a mean of 75 and a variance of 16, respectively. a. Find the range of values (interval) and the proportion (percentage) that fall within two standard deviations from the mean. b.Find the proportion (percentage) of the data that is less than 67.
Madhur L.
In ABC company, there are 50 employees. Each employee travels to work every morning in his or her own car. The distribution of the driving times (in minutes) from home to work for the employees is shown in the table below. Driving Times (minutes): 1 – 10, 11 – 20, 21 – 30, 31 – 40, 41 – 50 Number of Employees: 8, 14, 12, 9, 7 Calculate (a) mean; (b) median; (c) mode; (d) variance; (e) standard deviation; (f) Pearson’s coefficient of skewness and interpret your finding.
Evelyn C.
Recommended Textbooks
Elementary Statistics a Step by Step Approach
The Practice of Statistics for AP
Introductory Statistics
18,000,000+
Students on Numerade
Trusted by students at 8,000+ universities
Watch the video solution with this free unlock.
EMAIL
PASSWORD