Introduction to Statistics and Data Analysis
5th Edition
ISBN: 9781305115347
Author: Roxy Peck; Chris Olsen; Jay L. Devore
Publisher: Brooks Cole
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Question
Chapter 15.3, Problem 27E
To determine
Check whether the data provide any evidence that the mean soil moisture is the same for all the three treatments at 0.05 level of significance.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
A study by a reputable research group captured multitasking activities of adults who use different devices while watching TV. The study reported that 320 of 442 (72%) smartphone users sampled, 192 of 350 (55%) computer users sampled, and 139 of 260 (53%)tablet users sampled used their device to check social media unrelated to the video content while watching TV. Complete parts (a) through (c) below.
a. Is there evidence of a significant difference among the smartphone, computer, and tablet users with respect to the proportion who use their device to check social media unrelated to the video content while watching TV? (Use α=0.10.)
Your answer is correct.
The test statistic is
χ2STAT=35.860
The critical value for α=0.10
Please help and explain how to achieve critical value
A study by a reputable research group captured multitasking activities of adults who use different devices while watching TV. The study reported that 320 of 442 (72%) smartphone users sampled, 192 of 350 (55%)computer users sampled, and 139 of 260 (53%) tablet users sampled used their device to check social media unrelated to the video content while watching TV. Complete parts (a) through (c) below.
a. Is there evidence of a significant difference among the smartphone, computer, and tablet users with respect to the proportion who use their device to check social media unrelated to the video content while watching TV? (Use α=0.10.)
The test statistic is
χ2STAT=
Find X2STAT
Please show me the process of how you find this.
Northern flying squirrels eat lichen and fungi, which makes for a relatively low quality diet. The authors of the paper "Nutritional
Value and Diet Preference of Arboreal Lichens and Hypogeous Fungi for Small Mammals in the Rocky Mountains" + measured
nitrogen intake and nitrogen retention in six flying squirrels that were fed the fungus Rhizopogon.
Data read from a graph that appeared in the paper are given in the table below. (The negative value for nitrogen retention for the
first squirrel represents a net loss in nitrogen.)
Nitrogen Intake,
x (grams)
0.03
0.10
0.07
0.06
0.07
0.25
(a) Construct a scatterplot of these data.
y
0.10
0.05
-0.05
y
0.10
0.05
-0.05
0.05 0.10
g
0.05 0.10
Nitrogen Retention,
y (grams)
-0.04
0.00
0.01
0.01
0.04
0.11
g
+
0.15 0.20 0.25
0.15
●●
0.20 0.25
X
y
0.10
0.05
-0.05
y
0.10
0.05
-0.05
(b) Find the equation of the least-squares regression line. (Round your values to five decimal places.)
ŷ =
0.05 0.10 0.15 0.20 0.25
0.05 0.10 0.15 0.20 0.25
(c) Based on…
Chapter 15 Solutions
Introduction to Statistics and Data Analysis
Ch. 15.1 - Give as much information as you can about the...Ch. 15.1 - Prob. 2ECh. 15.1 - Employees of a state university system can choose...Ch. 15.1 - The accompanying summary statistics for a measure...Ch. 15.1 - The authors of the paper Age and Violent Content...Ch. 15.1 - The paper referenced in the previous exercise also...Ch. 15.1 - The Paper Womens and Mens Eating Behavior...Ch. 15.1 - Can use of an online plagiarism-detection system...Ch. 15.1 - The experiment described in Example 15.4 also gave...Ch. 15.1 - Prob. 10E
Ch. 15.1 - Prob. 11ECh. 15.1 - Prob. 12ECh. 15.1 - In an experiment to investigate the performance of...Ch. 15.2 - Leaf surface area is an important variable in...Ch. 15.2 - Prob. 15ECh. 15.2 - Prob. 16ECh. 15.2 - Prob. 17ECh. 15.2 - The paper referenced in Exercise 15.5 described an...Ch. 15.2 - Prob. 19ECh. 15.2 - The accompanying data resulted from a flammability...Ch. 15.2 - Do lizards play a role in spreading plant seeds?...Ch. 15.2 - Samples of six different brands of diet or...Ch. 15.3 - A particular county employs three assessors who...Ch. 15.3 - The accompanying display is a partially completed...Ch. 15.3 - With the use of biofuels increasing, investigators...Ch. 15.3 - Prob. 26ECh. 15.3 - Prob. 27ECh. 15.3 - Prob. 28ECh. 15.4 - Prob. 29ECh. 15.4 - The paper Feedback Enhances the Positive Effects...Ch. 15.4 - The following graphs appear in the paper Which...Ch. 15.4 - The behavior of undergraduate students when...Ch. 15.4 - Prob. 33ECh. 15.4 - The following partially completed ANOVA table...Ch. 15.4 - Prob. 35ECh. 15.4 - Prob. 36ECh. 15.4 - Prob. 37ECh. 15 - Suppose that a random sample or size n = 5 was...Ch. 15 - Parents are frequently concerned when their child...Ch. 15 - Prob. 40CRCh. 15 - Consider the accompanying data on plant growth...Ch. 15 - Prob. 42CRCh. 15 - Prob. 43CRCh. 15 - Prob. 44CRCh. 15 - Prob. 45CRCh. 15 - Prob. 46CRCh. 15 - Prob. 47CRCh. 15 - Prob. 48CRCh. 15 - Prob. 49CR
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
- A mail-order catalog firm would like to test the effect of the size of a magazine advertisement and the advertisement design on the number of catalog requests received (data in thousands). Three advertising designs and two different size advertisements were considered. The data obtained follow. At the 0.05 level of significance, a. Is there an interaction between type of design and size of advertisement? b. Is there an effect due to type of design? c. Is there an effect due to size of advertisement?arrow_forwardI want d), e), f)arrow_forward1 2 3 4 5 6 7 8 9 _0 1 2 3 _4 5 6 _7 8 9 20 21 22 23 24 25 26 27 28 29 30 31 52 53 4 35 36 37 38 39 10 11 12 13 14 15 16 47 18 19 50 51 52 53 54 A Income ($1000s) 54 30 32 50 31 55 37 40 66 51 25 48 27 33 65 63 42 21 44 37 62 21 55 42 41 54 30 48 34 67 50 67 55 52 62 64 22 29 39 35 39 54 23 27 26 61 30 22 46 66 B Household Size 3 2 4 5 2 2 1 2 4 3 3 4 1 2 3 4 6 2 1 5 6 3 7 2 7 6 1 2 5 4 2 5 6 2 3 2 3 4 2 1 4 3 6 2 7 2 AUANN 2 4 5 4 с Amount Charged ($) 4,016 3,159 5,100 4,742 1,864 4,070 2,731 3,348 4,764 4,110 4,208 4,219 2,477 2,514 4,214 4,965 4,412 2,448 2,995 4,171 5,678 3,623 5,301 3,020 4,828 5,573 2,583 3,866 3,586 5,037 3,605 5,345 5,370 3,890 4,705 4,157 3,579 3,890 2,972 3,121 4,183 3,730 4,127 2,921 4,603 4,273 3,067 3,074 4,820 5,149 D E F G H I J Karrow_forward
- The St. Lucian Government is interested in predicting the number of weekly riders on the public buses using the following variables: • Price of bus trips ~er week • The population in the city • The monthly income of riders • Average rate to park your personal vehicle Number of weekly riders 192,000 Population of city 1,800,000 1,790,000 Price per week Monthly income of riders Average parking rates per month City $15 $5,800 $50 $6,200 $50 190,400 191,200 $15 $15 1,780,000 $6,400 $60 4 $25 $6,500 $60 177,600 176,800 1,778,000 1,750,000 1,740,000 5 $25 $6,550 $60 6. 178,400 $25 $6,580 $70 7 180,800 $25 1,725,000 $8,200 $75 175,200 174,400 $30 $30 1,725,000 $8,600 $8,800 8 $75 9. 1,720,000 $75 10 173,920 $30 1,705,000 $80 $9,200 $9,630 $10,570 $11,330 $11,600 S11,800 $11,830 $12,650 S13.000 1,710,000 1,700,000 11 172,800 163,200 $30 $80 12 $40 $80 13 161,600 $40 1,695,000 1,695,000 1,690,000 $85 14 161,600 160,800 $40 $100 15 $40 $105 1,630,000 1,640,000 1,635,000 16 159,200 $40 $105 17…arrow_forwardA widely used method of monitoring customer loyalty is based on customers rating, on a 0-10scale, how likely they are to recommend a firm’s products or services to others? Customers whose ratings are 9 or 10 are called promoters; customers whose ratings are below 7 are called detractors. The net promoter score is the difference in the proportion of promoters and detractors (promotors - detractors ). Consider a company that has set two loyalty targets: (1) for most customers to be promotors , and (2) to have a net promoter score of at least .25. To test these targets, the company gathered ratings from a random sample of 293 customers, of which 159 were promoters and 65 were detractors. a.Compute and .pˆpromoter and pˆdetractor b.For α=.05, test the alternative hypothesis that the company meets its target for the proportion of its customer population who are promoters. c.For α=.05, test the alternative hypothesis that the company meets its net promoter target for its customer…arrow_forwardMicrohabitat factors associated with forage and bed sites of barking deer in Hainan Island, China were examined from 2001 to 2002. In this region, woods make up 4.8% of the land, cultivated grass plot makes up 14.7%, and deciduous forests makes up 39.6%. Of the 426 sites where the deer forage, 4 were categorized as woods, 16 as cultivated grassplot, and 61 as deciduous forests. The table below summarizes these data. Woods Cultivated grassplot Deciduous forests Other Total 4 16 61 345 426 a) Write the hypotheses for testing if barking deer prefer to forage in certain habitats over others. Ho: All habitats are equally prefered vs HA: Cultivated grassplot habitats are prefered over others Ho: All habitats are equally prefered vs HA: Wood habitats are prefered over others Họ : All habitats are equally prefered vs HA: Some habitats are prefered over others Ho: All habitats are equally prefered vs HA: Deciduous habitats are prefered over others b) What type of test can we use to answer this…arrow_forward
- A cohort study was undertaken to test for association between arteriolosclerosis (hardening of the arterioles) and secondary hypertension. The data were split into 2 groups: subjects who had been treated with nonsteroidal anti-inflammatory drugs (NSAIDS) and those who had not. The stratified data are shown in Table 3: Treated with NSAIDS Exposure Category Secondary Hypertension No Secondary Hypertension Total Not Treated with NSAIDS Exposure Category Secondary Hypertension No Secondary Hypertension Total Table 3 Arteriolosclerosis 46 23 69 Arteriolosclerosis 79 25 104 No Arteriolosclerosis 251 724 975 No Arteriolosclerosis 405 446 851 Total 297 747 1044 Total 484 471 955 Obtain the stratum-specific odds ratios for the 2 groups and the odds ratio for the aggregate data. Comment on the association between arteriolosclerosis and secondary hypertension and the role played by NSAIDS in this association.arrow_forwardIn a study, the effects of the mane of a male lion as a signal of quality to mates and rivals was explored. Four life-sized dummies of male lions provided a tool for testing female response to the unfamiliar lions whose manes varied by length (long or short) and color (blonde or dark). The female lions were observed to see whether they approached each of the four life-sized dummies. Complete parts (a) through (e) below. a. Identify the experimental units. Choose the correct answer below. The female lions The male dummies The mane colors The mane lengths Part 2 b. Identify the response variable. Choose the correct answer below. A. Whether or not (yes or no) the mane length affected how the female lions reacted to a male dummy. B. Whether or not (yes or no) the female lions approached the same dummies. C. Whether or not (yes or no) the female lions approached a male dummy. D. Whether or not…arrow_forwardIn a cohort study of pesticide exposure and cancer, a group of employees who were exposed to the pesticide and a comparative group who were not exposed were followed up for 30 years at a chemical company. Researchers found that the incidence of cancer among the exposed workers was 55.3 per 1,000. In the comparative group, the incidence of cancer was 15.7 per 1,000. Calculate the: 1. relative risk and the 2. attributable risks of exposure of exposure to pesticides and the development of cancer. Please show you calculations. For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac). B I U S Paragraph Arial ≡≡ EE X² X₂ CH H+ {} Ⓒ K + V 10pt >¶¶< +₁ ABC ✔ ✓ E A 11 "" Ω V Tx XQ 田く 52 A&A EXEarrow_forward
- The article "Estimating Population Abundance in Plant Species with Dormant Life-Stages: Fire and the Endangered Plant Grevillea caleye R Br." (T. Auld and J. Scott, Ecological Management and Restoration, 2004:125-129) presents estimates of population sizes of a certain rare shrub in areas burnt by fire. The following table presents population counts and areas (in m?) for several patches containing the plant. Агеа 3739 Population 3015 5277 1847 400 17 345 392 142 40 7000 2521 213 11958 1200 2878 707 113 1392 157 12000 10880 711 74 2259 223 81 15 33 18 1254 1320 229 351 1000 92 841 1720 1500 300 228 31 228 17 10 Compute the least-squares line for predicting population (y) from area (x). Б. a. Plot the residuals versus the fitted values. Does the model seem appropriate? Compute the least-squares line for predicting In y from In x. Plot the residuals versus the fitted values. Does the model seem appropriate? Using the more appropriate model, construct a 95% prediction interval for the…arrow_forwardThe St. Lucian Government is interested in predicting the number of weekly riders on the public buses using the following variables: • Price of bus trips rer week • The population in the city • The monthly income of riders • Average rate to park your personal vehicle Number of weekly riders 192,000 Price per week Population of city 1,800,000 Monthly income of riders Average parking rates per month City $15 $5,800 $50 $6,200 $6,400 $6,500 $50 $60 190,400 $15 1,790,000 191,200 $15 1,780,000 4 $25 $60 177,600 176,800 1,778,000 $25 $6,550 $60 $70 5 1,750,000 1,740,000 6. 178,400 $25 $6,580 180,800 $25 1,725,000 $8,200 $75 175,200 174,400 $30 $30 1,725,000 $8,600 $8,800 8 $75 9. 1,720,000 $75 173,920 172,800 163,200 10 $30 $80 1,705,000 1,710,000 1,700,000 $9,200 $9,630 $10,570 11 $30 $80 12 $40 $80 $11,330 $11,600 S11,800 13 161,600 $40 1,695,000 1,695,000 $85 14 161,600 160,800 $40 $100 15 $40 1,690,000 $105 $40 1,630,000 1,640,000 1,635,000 S11,830 $12.650 S13.000 16 159,200 $105 17…arrow_forwardAn experiment was conducted to study the extrusion process of biodegradable packaging foam. Two of the factors considered for their effect on the foam diameter (mm) were the die temperature(145°C vs.155°C) and the die diameter (3 mm vs. 4 mm). The results are in the accompanying data table. The question are attached in a photoarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Big Ideas Math A Bridge To Success Algebra 1: Stu...AlgebraISBN:9781680331141Author:HOUGHTON MIFFLIN HARCOURTPublisher:Houghton Mifflin Harcourt
Glencoe Algebra 1, Student Edition, 9780079039897...AlgebraISBN:9780079039897Author:CarterPublisher:McGraw Hill
Big Ideas Math A Bridge To Success Algebra 1: Stu...
Algebra
ISBN:9781680331141
Author:HOUGHTON MIFFLIN HARCOURT
Publisher:Houghton Mifflin Harcourt
Glencoe Algebra 1, Student Edition, 9780079039897...
Algebra
ISBN:9780079039897
Author:Carter
Publisher:McGraw Hill
Sampling Methods and Bias with Surveys: Crash Course Statistics #10; Author: CrashCourse;https://www.youtube.com/watch?v=Rf-fIpB4D50;License: Standard YouTube License, CC-BY
Statistics: Sampling Methods; Author: Mathispower4u;https://www.youtube.com/watch?v=s6ApdTvgvOs;License: Standard YouTube License, CC-BY