Log in to StudySoup
Get Full Access to Statistics For Engineers And Scientists - 4 Edition - Chapter 7.3 - Problem 3e
Join StudySoup for FREE
Get Full Access to Statistics For Engineers And Scientists - 4 Edition - Chapter 7.3 - Problem 3e

Already have an account? Login here
Reset your password

Ozone (O3) is a major component of air pollution in many

Statistics for Engineers and Scientists | 4th Edition | ISBN: 9780073401331 | Authors: William Navidi ISBN: 9780073401331 38

Solution for problem 3E Chapter 7.3

Statistics for Engineers and Scientists | 4th Edition

  • Textbook Solutions
  • 2901 Step-by-step solutions solved by professors and subject experts
  • Get 24/7 help from StudySoup virtual teaching assistants
Statistics for Engineers and Scientists | 4th Edition | ISBN: 9780073401331 | Authors: William Navidi

Statistics for Engineers and Scientists | 4th Edition

4 5 1 398 Reviews
Problem 3E

Problem 3E 

Ozone (O3) is a major component of air pollution in many cities. Atmospheric ozone levels are influenced by many factors, including weather. In one study, the mean percent relative humidity (x) and the mean ozone levels (y) were measured for 120 days in a western city. Mean ozone levels were measured in ppb. The following output (from MINITAB) describes the fit of a linear model to these data. Assume that assumptions 1 through 4 on page 540 hold.

The regression equation is

Ozone = 88.8 - 0.752 Humidity







SE Coef













S = 11.43

R-Sq = 22.0%

R-Sq(adj) = 21.4%

Predicted Values for New Observations





New Obs


SE Fit

95.0% CI

95.0% PI




(41.23 46.00)

(20.86, 66.37)

Values of Predictors for New Observations





New Obs










a. What are the slope and intercept of the least-squares line?

b. Is the linear model useful for predicting ozone levels from relative humidity? Explain.

c. Predict the ozone level for a day when the relative humidity is 50%.

d. What is the correlation between relative humidity and ozone level?

e. The output provides a 95% confidence interval for the mean ozone level for days where the relative humidity is 60%. There are n = 120 observations in this data set. Using the value “SE Fit,” find a 90% confidence interval.

f. Upon learning that the relative humidity on a certain day is 60%, someone predicts that the ozone level that day will be 80ppb. Is this a reasonable prediction? If so, explain why. If not, give a reasonable range of predicted values.

Step-by-Step Solution:
Step 1 of 3

Vowels Phonics in a Balanced • ­ One way that phonemes are classified as Consonants Literacy Program • ­One way phonemes are • ­ At the middle or end of a word classifieds  Reading is a • ­A, E, I, O, U = vowels complex process and • ­Can be short or long sounds • ­Consonants are at the phonological • ­Vowel diagraphs or diphthongs beginning of a word systems works in • DIAGRAPH­ when two vowels represent a single • ­2 different combinations of conjunction with consonants are blends and sound diagraphs semantic, syntactic, • DIPHTHONGS­ when two vowels represent a glide and pragmatic from one sound to another • BLENDS­ 2 or 3 consonants systems • ­When one or more vowels are followed by an 'r' it's appear next to each other in  Phonics instruction called an r­controlled vowel because the 'r' influences words and individual sounds should focus on the are blended together how the word is pronounced • DIAGRAPGHS ­ letter most useful • ­Vowels in unaccented syllables of multisyllabic combinations representing information for words are often softened and pronounced as 'uh' identifying words, single sounds that are not that it should be represented by either letter systematic and intensive. PHONICS Phonograms Teaching Phonics  One­syllable words and  Explicit Instruction and Authentic syllables in longer words Application Activities is the best way to can be divided into 2 parts:  onset­ is the teach phonics consonant sound that  Most begin with consonants and then introduce short vowels then children learn Phonics Rules precedes the vowel about consonant blends and diagraphs and  rime­ is the vowel long vowels so that they can read and spell  Q followed by U and and any consonants pronounced /kw/ that follow it consonant­vowel­consonant­e or CVCe­  R­controlled vowels: r pattern words. influences preceding vowels so  Children make more errors  Strategies­ sounding out words, decoding decoding and spelling the by analogy, and applying phonics rules. that they are neither long or rime than the onset and short more errors or vowels than  Phonics instruction should be done daily so  Long vowel­ when there are two on consonants that children can apply the phonics adjacent vowels the long vowel strategies and skills they are learning in sound of the first one is  Rimes provide an important authentic reading and writing activities. key to word identification  Ratio of time spent on phonics instruction pronounced and the second is  37 rimes found in nearly silent ­ “when two vowels go 500 common words is 3 to 1 walking the first one does the  Knowing these rimes can  Explicit Instruction ­ minilessons on talking” phonics concepts (skills or strategies)  CVC pattern rule­ when a one­ help beginning readers demonstrate how to use it, and present decode other words words for students to use in guided syllable word has only one  Rimes are known as vowel and the vowel comes phonograms or word practice, opportunities for students to between two consonant, it is manipulate sounds and read and write usually short families words.  CVC pattern rule­ then there are  Application activities­ interactive writing, word ladders, word sorts, making words­ two vowels in a one­syllable word and one vowel is an e at when learning about phoneme­grapheme the end of the word, the first correspondences, word families, and vowel is long and the final e is phonics rules silent.

Step 2 of 3

Chapter 7.3, Problem 3E is Solved
Step 3 of 3

Textbook: Statistics for Engineers and Scientists
Edition: 4
Author: William Navidi
ISBN: 9780073401331

Other solutions

People also purchased

Related chapters

Unlock Textbook Solution

Enter your email below to unlock your verified solution to:

Ozone (O3) is a major component of air pollution in many