Explanation Given Information: The table is: Shipment time (hours) Midpoint ( x ) Frequency ( f ) Product ( xf ) 22.5-27.5 27.5-32.5 32.5-37.5 37.5-42.5 42.5-47.5 47.5-52.5 2 41 79 28 15 6 Formula used: 1) Mid-point is given by: mid-point = lowerlimit+upperlimit 2 2) Mean of frequency distribution is given by: Mean = Sumof ( x f ) f Where, x is the mid-point and f is the frequency. 3) Sample standard deviation is given by: s = sumofD 2 f n − 1 Calculation: Consider the table: Shipment time (hours) Midpoint ( x ) Frequency ( f ) Product ( xf ) 22.5-27.5 27.5-32.5 32.5-37.5 37.5-42.5 42.5-47.5 47.5-52.5 2 41 79 28 15 6 In order to complete the table: Find the first mid-point, mid-point ( x ) = 22 .5+27 .5 2 = 25 And then product of first x and f that is xf. x f = x ⋅ f = 25 ⋅ 2 = 50 Similarly find other values of x and xf, Shipment time (hours) Midpoint ( x ) Frequency ( f ) Product ( xf ) 22.5-27.5 27.5-32.5 32.5-37.5 37.5-42.5 42.5-47.5 47.5-52

11th Edition

ISBN: 9781285199191

Author: Dale Ewen, C. Robert Nelson

Publisher: Cengage Learning

See similar textbooks

Concept explainers

Inverse Normal Distribution

The method used for finding the corresponding z-critical value in a normal distribution using the known probability is said to be an inverse normal distribution. The inverse normal distribution is a continuous probability distribution with a family of tw…

Mean, Median, Mode

It is a descriptive summary of a data set. It can be defined by using some of the measures. The central tendencies do not provide information regarding individual data from the dataset. However, they give a summary of the data set. The central tendency o…

Z-Scores

A z-score is a unit of measurement used in statistics to describe the position of a raw score in terms of its distance from the mean, measured with reference to standard deviation from the mean. Z-scores are useful in statistics because they allow compar…

Videos

Question

Chapter 15.9, Problem 5E

To determine

To calculate: The sample standard deviation of shipment time from the data:

Shipment time

(hours)

Midpoint

(x)

Frequency

(f)

Product

(xf)

22.5-27.5

27.5-32.5

32.5-37.5

37.5-42.5

42.5-47.5

47.5-52.5

2

41

79

28

15

6

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Chapter 15.9, Problem 4E

Chapter 15.9, Problem 6E

Students have asked these similar questions

A small company of science writers found that its rate of profit (in thousands of dollars) after t years of operation is given by P'(t) = (5t + 15) (t² + 6t+9) ³. (a) Find the total profit in the first three years. (b) Find the profit in the sixth year of operation. (c) What is happening to the annual profit over the long run? (a) The total profit in the first three years is $ (Round to the nearest dollar as needed.)

I just need to know why this is wrong below: What is the test statistic W? W=5 (incorrect) and What is the p-value of this test? (p-value < 0.001-- incorrect) Use the Wilcoxon signed rank test to test the hypothesis that the median number of pages in the statistics books in the library from which the sample was taken is 400. A sample of 12 statistics books have the following numbers of pages pages 127 217 486 132 397 297 396 327 292 256 358 272 What is the sum of the negative ranks (W-)? 75 What is the sum of the positive ranks (W+)? 5What type of test is this? two tailedWhat is the test statistic W? 5 These are the critical values for a 1-tailed Wilcoxon Signed Rank test for n=12 Alpha Level 0.001 0.005 0.01 0.025 0.05 0.1 0.2 Critical Value 75 70 68 64 60 56 50 What is the p-value for this test? p-value < 0.001

Find the area between the curves. x= -2, x = 7, y=2x² +3, y=0 Set up the integral (or integrals) needed to compute this area. Use the smallest possible number of integrals. Select the correct choice below and fill in the answer boxes to complete your choice. A. 7 [[2x² +3] dx -2 B. [[ ] dx+ -2 7 S [ ] dx The area between the curves is (Simplify your answer.)

Chapter 15 Solutions

Elementary Technical Mathematics

Ch. 15.1 - Prob. 1E Ch. 15.1 - Prob. 2E Ch. 15.1 - Prob. 3E Ch. 15.1 - Prob. 4E Ch. 15.1 - Prob. 5E Ch. 15.1 - Prob. 6E Ch. 15.1 - Prob. 7E Ch. 15.1 - Prob. 8E Ch. 15.1 - Prob. 9E Ch. 15.1 - Prob. 10E

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, subject and related others by exploring similar questions and additional content below.

The sample standard deviation of shipment time from the data: Shipment time (hours) Midpoint ( x ) Frequency ( f ) Product ( xf ) 22.5-27.5 27.5-32.5 32.5-37.5 37.5-42.5 42.5-47.5 47.5-52.5 2 41 79 28 15 6

Concept explainers

Videos

To calculate: The sample standard deviation of shipment time from the data: Shipment time (hours) Midpoint (x) Frequency (f) Product (xf) 22.5-27.5 27.5-32.5 32.5-37.5 37.5-42.5 42.5-47.5 47.5-52.5 2 41 79 28 15 6

Want to see the full answer?

Chapter 15 Solutions

To calculate: The sample standard deviation of shipment time from the data:

Shipment time

(hours)

Midpoint

(x)

Frequency

(f)

Product

(xf)

22.5-27.5

27.5-32.5

32.5-37.5

37.5-42.5

42.5-47.5

47.5-52.5

2

41

79

28

15

6