Introduction to Probability and Statistics
14th Edition
ISBN: 9781133103752
Author: Mendenhall, William
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Videos
Question
Chapter 1, Problem 1.48SE
a.
To determine
To find: The relative frequency histogram for the data.
a.
Expert Solution
Answer to Problem 1.48SE
The relative frequency histogram for the data is shown in Figure-1.
Explanation of Solution
Given information: The data is shown below.
| 8.9 | 12.3 | 10.7 | 8.4 | 7.8 | 11.5 | 8.2 | 9.0 | 8.8 |
| 7.1 | 11.8 | 10.3 | 7.7 | 9.0 | 10.5 | 9.1 | 8.7 | 8.7 |
| 9.1 | 9.0 | 10.5 | 11.2 | 7.7 | 8.8 | 12.2 | 7.9 | 8.8 |
| 8.7 | 7.1 | 8.7 | 7.6 | 5.1 | 35.1 | 10.5 | 10.4 | 11.0 |
| 10.2 | 8.6 | 10.7 | 9.6 | 8.3 | 8.0 | 9.5 | 7.7 | 9.4 |
| 8.7 | 7.8 | 10.2 | 6.9 | 9.2 | 10.2 | 6.2 | 9.6 | 12.2 |
Calculation:
The histogram is shown below.
Figure-1
Thus, the histogram for the data is shown in Figure-1.
b.
To determine
To explain:Whether the observation describes the geography of the city.
b.
Expert Solution
Explanation of Solution
Given information: The data is shown below.
| 8.9 | 12.3 | 10.7 | 8.4 | 7.8 | 11.5 | 8.2 | 9.0 | 8.8 |
| 7.1 | 11.8 | 10.3 | 7.7 | 9.0 | 10.5 | 9.1 | 8.7 | 8.7 |
| 9.1 | 9.0 | 10.5 | 11.2 | 7.7 | 8.8 | 12.2 | 7.9 | 8.8 |
| 8.7 | 7.1 | 8.7 | 7.6 | 5.1 | 35.1 | 10.5 | 10.4 | 11.0 |
| 10.2 | 8.6 | 10.7 | 9.6 | 8.3 | 8.0 | 9.5 | 7.7 | 9.4 |
| 8.7 | 7.8 | 10.2 | 6.9 | 9.2 | 10.2 | 6.2 | 9.6 | 12.2 |
Since, the highest peak in the Mount Washington is at 6288 ft which is famous for the erratic weather but the recorded value is an outlier with respect to the geographical location of the city.
c.
To determine
To explain:Whether the wind is unusual.
c.
Expert Solution
Explanation of Solution
Given information: The data is shown below.
| 8.9 | 12.3 | 10.7 | 8.4 | 7.8 | 11.5 | 8.2 | 9.0 | 8.8 |
| 7.1 | 11.8 | 10.3 | 7.7 | 9.0 | 10.5 | 9.1 | 8.7 | 8.7 |
| 9.1 | 9.0 | 10.5 | 11.2 | 7.7 | 8.8 | 12.2 | 7.9 | 8.8 |
| 8.7 | 7.1 | 8.7 | 7.6 | 5.1 | 35.1 | 10.5 | 10.4 | 11.0 |
| 10.2 | 8.6 | 10.7 | 9.6 | 8.3 | 8.0 | 9.5 | 7.7 | 9.4 |
| 8.7 | 7.8 | 10.2 | 6.9 | 9.2 | 10.2 | 6.2 | 9.6 | 12.2 |
Since, the relative frequency is
Thus, the observation is usually windy.
Want to see more full solutions like this?
Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!
Students have asked these similar questions
Calculate the sample mean and sample variance for the following frequency distribution of heart rates for a sample of American adults. If necessary, round to one more
decimal place than the largest number of decimal places given in the data.
Heart Rates in
Beats per Minute
Class
Frequency
51-58
5
59-66
8
67-74
9
75-82
7
83-90
8
can someone solve
QUAT6221wA1
Accessibility Mode
Immersiv
Q.1.2
Match the definition in column X with the correct term in column Y.
Two marks will be awarded for each correct answer.
(20)
COLUMN X
Q.1.2.1
COLUMN Y
Condenses sample data into a few summary
A.
Statistics
measures
Q.1.2.2
The collection of all possible observations that
exist for the random variable under study.
B.
Descriptive statistics
Q.1.2.3
Describes a characteristic of a sample.
C.
Ordinal-scaled data
Q.1.2.4
The actual values or outcomes are recorded
on a random variable.
D.
Inferential statistics
0.1.2.5
Categorical data, where the categories have an
implied ranking.
E.
Data
Q.1.2.6
A set of mathematically based tools &
techniques that transform raw data into
F.
Statistical modelling
information to support effective decision-
making.
45
Q Search
28
# 00
8
LO
1
f
F10
Prise
11+
Chapter 1 Solutions
Introduction to Probability and Statistics
Ch. 1.3 - Experimental Units Identify the experimental units...Ch. 1.3 - Qualitative or Quantitative? Identify each...Ch. 1.3 - Discrete or Continuous? Identify the following...Ch. 1.3 - Discrete or Continuous? Identify each quantitaive...Ch. 1.3 - Parking on Campus Six vehicles are selected from...Ch. 1.3 - Past U.S. Presidents A data set consists of the...Ch. 1.3 - Voter Attitudes You are a candidate for your state...Ch. 1.3 - Cancer Survival Times A medical researcher wants...Ch. 1.3 - New Teaching Methods An educational researcher...Ch. 1.3 - Fifty people are grouped into four categrires A,...
Ch. 1.3 - Jeans A manufacturer of jeans has plants in...Ch. 1.3 - Prob. 1.12ECh. 1.3 - Want to Be President? Would you want to be the...Ch. 1.3 - Facebook Fanatics The social networking site...Ch. 1.3 - Back to Work How long does it take you to adjust...Ch. 1.5 - Construct a stem and leaf plot for these 50...Ch. 1.5 - Refer to Exercise 1.16. Construct a relative...Ch. 1.5 - Prob. 1.18ECh. 1.5 - A discrete variable can take on oniy the values 0....Ch. 1.5 - Prob. 1.20ECh. 1.5 - Prob. 1.21ECh. 1.5 - Prob. 1.22ECh. 1.5 - Cheeseburgers Create a dotplot for the number of...Ch. 1.5 - Prob. 1.24ECh. 1.5 - Prob. 1.25ECh. 1.5 - Prob. 1.26ECh. 1.5 - Education Pays Off! Education pays off, according...Ch. 1.5 - Preschool The ages (in months) at which 50...Ch. 1.5 - Prob. 1.29ECh. 1.5 - Prob. 1.30ECh. 1.5 - Prob. 1.31ECh. 1.5 - Prob. 1.32ECh. 1.5 - Prob. 1.33ECh. 1.5 - RBC Counts The red blood cell count of a healthy...Ch. 1.5 - Prob. 1.35ECh. 1.5 - Prob. 1.36ECh. 1.5 - Hazardous Waste How safe is your neighborhood? Are...Ch. 1 - Quantitative or Qualitative? Identify each...Ch. 1 - Symmetric or Skewed? Do you expect the...Ch. 1 - Continuous or Discrete? Identify each variable as...Ch. 1 - Prob. 1.41SECh. 1 - Continuous or Discrete, again Identify each...Ch. 1 - Aqua Running Aqua running has been suggested as a...Ch. 1 - Prob. 1.44SECh. 1 - Ages of Pennies We collected 50 pennies and...Ch. 1 - Prob. 1.46SECh. 1 - Presidential Vetoes Here is a list of the 44...Ch. 1 - Prob. 1.48SECh. 1 - Prob. 1.49SECh. 1 - Prob. 1.50SECh. 1 - Prob. 1.51SECh. 1 - Prob. 1.52SECh. 1 - Prob. 1.53SECh. 1 - Student Heights The self-reported heights of 105...Ch. 1 - Prob. 1.55SECh. 1 - Pulse Rates A group of 50 biomedical students...Ch. 1 - Prob. 1.57SECh. 1 - Prob. 1.58SECh. 1 - Prob. 1.59SECh. 1 - Prob. 1.60SECh. 1 - Prob. 1.61SECh. 1 - Old Faithful The data below are the wailing times...Ch. 1 - Prob. 1.63SECh. 1 - Prob. 1.64SECh. 1 - Prob. 1.65SECh. 1 - The number of Starhucks coffee shops in cities...Ch. 1 - What’s Normal? The 98.6 degree standard for human...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.Similar questions
- Students - Term 1 - Def X W QUAT6221wA1.docx X C Chat - Learn with Chegg | Cheg X | + w:/r/sites/TertiaryStudents/_layouts/15/Doc.aspx?sourcedoc=%7B2759DFAB-EA5E-4526-9991-9087A973B894% QUAT6221wA1 Accessibility Mode பg Immer The following table indicates the unit prices (in Rands) and quantities of three consumer products to be held in a supermarket warehouse in Lenasia over the time period from April to July 2025. APRIL 2025 JULY 2025 PRODUCT Unit Price (po) Quantity (q0)) Unit Price (p₁) Quantity (q1) Mineral Water R23.70 403 R25.70 423 H&S Shampoo R77.00 922 R79.40 899 Toilet Paper R106.50 725 R104.70 730 The Independent Institute of Education (Pty) Ltd 2025 Q Search L W f Page 7 of 9arrow_forwardCOM WIth Chegg Cheg x + w:/r/sites/TertiaryStudents/_layouts/15/Doc.aspx?sourcedoc=%7B2759DFAB-EA5E-4526-9991-9087A973B894%. QUAT6221wA1 Accessibility Mode Immersi The following table indicates the unit prices (in Rands) and quantities of three meals sold every year by a small restaurant over the years 2023 and 2025. 2023 2025 MEAL Unit Price (po) Quantity (q0)) Unit Price (P₁) Quantity (q₁) Lasagne R125 1055 R145 1125 Pizza R110 2115 R130 2195 Pasta R95 1950 R120 2250 Q.2.1 Using 2023 as the base year, compute the individual price relatives in 2025 for (10) lasagne and pasta. Interpret each of your answers. 0.2.2 Using 2023 as the base year, compute the Laspeyres price index for all of the meals (8) for 2025. Interpret your answer. Q.2.3 Using 2023 as the base year, compute the Paasche price index for all of the meals (7) for 2025. Interpret your answer. Q Search L O W Larrow_forwardQUAI6221wA1.docx X + int.com/:w:/r/sites/TertiaryStudents/_layouts/15/Doc.aspx?sourcedoc=%7B2759DFAB-EA5E-4526-9991-9087A973B894%7 26 QUAT6221wA1 Q.1.1.8 One advantage of primary data is that: (1) It is low quality (2) It is irrelevant to the purpose at hand (3) It is time-consuming to collect (4) None of the other options Accessibility Mode Immersive R Q.1.1.9 A sample of fifteen apples is selected from an orchard. We would refer to one of these apples as: (2) ھا (1) A parameter (2) A descriptive statistic (3) A statistical model A sampling unit Q.1.1.10 Categorical data, where the categories do not have implied ranking, is referred to as: (2) Search D (2) 1+ PrtSc Insert Delete F8 F10 F11 F12 Backspace 10 ENG USarrow_forward
- epoint.com/:w:/r/sites/TertiaryStudents/_layouts/15/Doc.aspx?sourcedoc=%7B2759DFAB-EA5E-4526-9991-9087A 23;24; 25 R QUAT6221WA1 Accessibility Mode DE 2025 Q.1.1.4 Data obtained from outside an organisation is referred to as: (2) 45 (1) Outside data (2) External data (3) Primary data (4) Secondary data Q.1.1.5 Amongst other disadvantages, which type of data may not be problem-specific and/or may be out of date? W (2) E (1) Ordinal scaled data (2) Ratio scaled data (3) Quantitative, continuous data (4) None of the other options Search F8 F10 PrtSc Insert F11 F12 0 + /1 Backspaarrow_forward/r/sites/TertiaryStudents/_layouts/15/Doc.aspx?sourcedoc=%7B2759DFAB-EA5E-4526-9991-9087A973B894%7D&file=Qu Q.1.1.14 QUAT6221wA1 Accessibility Mode Immersive Reader You are the CFO of a company listed on the Johannesburg Stock Exchange. The annual financial statements published by your company would be viewed by yourself as: (1) External data (2) Internal data (3) Nominal data (4) Secondary data Q.1.1.15 Data relevancy refers to the fact that data selected for analysis must be: (2) Q Search (1) Checked for errors and outliers (2) Obtained online (3) Problem specific (4) Obtained using algorithms U E (2) 100% 高 W ENG A US F10 点 F11 社 F12 PrtSc 11 + Insert Delete Backspacearrow_forwardA client of a commercial rose grower has been keeping records on the shelf-life of a rose. The client sent the following frequency distribution to the grower. Rose Shelf-Life Days of Shelf-Life Frequency fi 1-5 2 6-10 4 11-15 7 16-20 6 21-25 26-30 5 2 Step 2 of 2: Calculate the population standard deviation for the shelf-life. Round your answer to two decimal places, if necessary.arrow_forward
- A market research firm used a sample of individuals to rate the purchase potential of a particular product before and after the individuals saw a new television commercial about the product. The purchase potential ratings were based on a 0 to 10 scale, with higher values indicating a higher purchase potential. The null hypothesis stated that the mean rating "after" would be less than or equal to the mean rating "before." Rejection of this hypothesis would show that the commercial improved the mean purchase potential rating. Use = .05 and the following data to test the hypothesis and comment on the value of the commercial. Purchase Rating Purchase Rating Individual After Before Individual After Before 1 6 5 5 3 5 2 6 4 6 9 8 3 7 7 7 7 5 4 4 3 8 6 6 What are the hypotheses?H0: d Ha: d Compute (to 3 decimals).Compute sd (to 1 decimal). What is the p-value?The p-value is What is your decision?arrow_forwardWhy would you use a histograph or bar graph? Which would be better and why for the data shown.arrow_forwardPlease help me with this question on statisticsarrow_forward
- Please help me with this statistics questionarrow_forwardPlease help me with the following statistics questionFor question (e), the options are:Assuming that the null hypothesis is (false/true), the probability of (other populations of 150/other samples of 150/equal to/more data/greater than) will result in (stronger evidence against the null hypothesis than the current data/stronger evidence in support of the null hypothesis than the current data/rejecting the null hypothesis/failing to reject the null hypothesis) is __.arrow_forwardPlease help me with the following question on statisticsFor question (e), the drop down options are: (From this data/The census/From this population of data), one can infer that the mean/average octane rating is (less than/equal to/greater than) __. (use one decimal in your answer).arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Holt Mcdougal Larson Pre-algebra: Student Edition...AlgebraISBN:9780547587776Author:HOLT MCDOUGALPublisher:HOLT MCDOUGAL
Glencoe Algebra 1, Student Edition, 9780079039897...AlgebraISBN:9780079039897Author:CarterPublisher:McGraw Hill
Big Ideas Math A Bridge To Success Algebra 1: Stu...AlgebraISBN:9781680331141Author:HOUGHTON MIFFLIN HARCOURTPublisher:Houghton Mifflin Harcourt
Functions and Change: A Modeling Approach to Coll...AlgebraISBN:9781337111348Author:Bruce Crauder, Benny Evans, Alan NoellPublisher:Cengage Learning
Holt Mcdougal Larson Pre-algebra: Student Edition...
Algebra
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Glencoe Algebra 1, Student Edition, 9780079039897...
Algebra
ISBN:9780079039897
Author:Carter
Publisher:McGraw Hill
Big Ideas Math A Bridge To Success Algebra 1: Stu...
Algebra
ISBN:9781680331141
Author:HOUGHTON MIFFLIN HARCOURT
Publisher:Houghton Mifflin Harcourt
Functions and Change: A Modeling Approach to Coll...
Algebra
ISBN:9781337111348
Author:Bruce Crauder, Benny Evans, Alan Noell
Publisher:Cengage Learning
What Are Research Ethics?; Author: HighSchoolScience101;https://www.youtube.com/watch?v=nX4c3V23DZI;License: Standard YouTube License, CC-BY
What is Ethics in Research - ethics in research (research ethics); Author: Chee-Onn Leong;https://www.youtube.com/watch?v=W8Vk0sXtMGU;License: Standard YouTube License, CC-BY