Question

In: Statistics and Probability

The following data represent the time (in minutes) recorded for a sample of 20 employees in...

The following data represent the time (in minutes) recorded for a sample of 20 employees in order to get to work using public transportation.

12   37   24   5   9   42   46   39   54   34
22   50   58   30   27   118   61   47   18   15

(A) Does the sample contain any extreme values? Justify your answer with a suitable test. Comment on the results ...

The sample
Contains Extreme Values

IQR =
, Lower Limit =
, Upper Limit =
, & Median =

How many outliers in this dataset:
(Click to select)

(B) According to your conclusion in part (a), calculate the best central and the best absolute dispersion measure ...

The best central measure is
Median
that equals
, and the best absolute dispersion measure is
IQR
that equals
.

(C) Comment on the results obtained in part (b) ...

The time taken by the majority of employees to go to work by public transportation lies between
minutes and
minutes.

Solutions

Expert Solution

Question is answered.

orchestra answered 1 year ago
Next > < Previous

Related Solutions

The following data represent the flight time​ (in minutes) of a random sample of seven flights...
The following data represent the flight time​ (in minutes) of a random sample of seven flights from one city to another city.282 268 258 264 255 261 267   Compute the range and sample standard deviation of flight time. The range of flight time is . The sample standard deviation of flight time is . ​(Type an integer or decimal rounded to one decimal place as​ needed.)
The following data represent the flight time​ (in minutes) of a random sample of seven flights...
The following data represent the flight time​ (in minutes) of a random sample of seven flights from one city to another city. 282​, 268​, 258​, 264​, 255​, 261, 267    Compute the range and sample standard deviation of flight time. The range of flight time is_______minutes.
The following data represent the commute time​ (in minutes) x and a score on a​ well-being...
The following data represent the commute time​ (in minutes) x and a score on a​ well-being survey y. The equation of the​ least-squares regression line is Modifying Above y with caret equals negative 0.0512 x plus 70.2089 and the standard error of the estimate is 0.2843. Complete parts ​(a) through ​(e) below.    x 25 35 45 55 70 92 125    y 69.0 68.7 67.6 67.2 66.5 65.9 63.7 ​ (a) Predict the mean​ well-being index composite score of all individuals...
The following data represent the time, in minutes, that a patient has to wait during 12...
The following data represent the time, in minutes, that a patient has to wait during 12 visits to a doctor’s office before being seen by the doctor: 17 15 20 20 32 28 12 26 25 25 35 24 Use a test at the 0.05 level of significance to test the doctor’s claim that the median waiting time for her patients is not more than 20 minutes. Can you use the Wilcoxon Rank-Sum Test or a t-test? If yes, perform...
The following data represent the time, in minutes, that a patient has to wait during 12...
The following data represent the time, in minutes, that a patient has to wait during 12 visits to a doctor’s office before being seen by the doctor: 17 15 20 20 32 28 12 26 25 25 35 24 Use a test at the 0.05 level of significance to test the doctor’s claim that the median waiting time for her patients is not more than 20 minutes. Perform the Wilcoxon Rank-Sum Test, and then explain why it is an invalid...
The following data represent the commute time​ (in minutes) x and a score on a​ well-being...
The following data represent the commute time​ (in minutes) x and a score on a​ well-being survey y. The equation of the​ least-squares regression line is ModifyingAbove y with caret equals negative 0.0522 x plus 69.3800 and the standard error of the estimate is 0.3295. Complete parts ​(a) through ​(e) below.    x 10 20 30 40 55 77 110    y 69.0 68.3 67.9 67.1 66.1 65.9 63.5 ​(a) Predict the mean​ well-being index composite score of all individuals whose commute...
The following data represent the salaries (in thousands of dollars) of a sample of 13 employees...
The following data represent the salaries (in thousands of dollars) of a sample of 13 employees of a firm: 26.5, 23.5, 29.7, 24.8, 21.1, 24.3, 20.4, 22.7, 27.2, 23.7, 24.1, 24.8, and 28.2. Calculate the interquartile range. What does this tell you about the data? Show your work. Describe the shape of distribution of salaries of employees of the firm based on the values of the quartiles. Give a possible reason for the shape of this data set, in terms...
The following data represent the ages in years of a sample of 25 employees from a...
The following data represent the ages in years of a sample of 25 employees from a government department:             31        43        56        23        49        42        33        61        44        28             48        38        44        35        40        64        52        42        47        39             53        27        36        35        20 Construct a stem and leaf display for the ages. Find the median age.             Find the lower quartile of the ages.             Find the upper quartile of the ages.             Find the 60th percentile...
The following data represent the wait time, in minutes, for customers calling Dell technical support. 14...
The following data represent the wait time, in minutes, for customers calling Dell technical support. 14 21 37 24 19 12 16 69 13 The interquartile range is _________. Multiple Choice * 13.5 minutes * 30.5 minutes * 19 minutes * 17 minutes
Suppose the following table was generated from sample data of 20 20 employees relating hourly wage...
Suppose the following table was generated from sample data of 20 20 employees relating hourly wage to years of experience and whether or not they have a college degree. Using statistical software, create an indicator (dummy) variable for the variable "Degree" and find the regression equation. Is there enough evidence to support the claim that on average employees with a college degree have higher hourly wages than those without a college degree at the 0.05 0.05 level of significance? If...
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT