Elementary Statistics
12th Edition
ISBN: 9780321837936
Author: Mario F. Triola
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Videos
Question
Chapter 14.2, Problem 7BSC
To determine
To construct: The R chart by treating the seven measurements from each day as a sample.
To describe: A suggestion using the obtained results.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Pepsi Cans. In Exercises 5-8, refer to the axial loads (pounds) of aluminum Pepsi cans that are 0.0109 in. thick, as listed in Data Set 30 “Aluminum Cans” in Appendix B. An axial load of a can is the maximum weight supported by the side, and it is important to have an axial load high enough so that the can isn’t crushed when the top lid is pressed onto the top. There are seven measurements from each of 25 days of production. If the 175 axial loads are in one column, the first 7 are from the first day, the next 7 are from the second day, and so on, so that the “subgroup size” is 7.
Pepsi Cans: R Chart Treat the seven measurements from each day as a sample and construct an R chart. What does the result suggest?
A sociologist wants to determine if the life expectancy of people in Africa is less than
the life expectancy of people in Asia. The data obtained is shown in the table below.
Africa
Asia
= 63.3 yr.
1
X,=65.2 yr.
2
o, = 9.1 yr.
= 7.3 yr.
n1
= 120
= 150
Researchers are interested in the effect of a certain nutrient on the growth rate of plant seedlings. Using a hydroponics grow procedure that
utilized water containing the nutrient, they planted six tomato plants and recorded the heights of each plant 14 days after germination. Those
heights, measured in millimeters, were as follows: 56.2, 58.2, 59.3, 63.2, 64.1, 68.5. O
a. Find a point estimate of the population mean height of this variety of seedling 14 days after germination.
b. Given a margin of error of 4.8 mm, construct a 95% confidence interval for the population mean height.
c. Use this example to explain why a point estimate alone is usually insufficient for statistical inference.
a. What is the point estimate of the population mean?
mm
(Round to one decimal place as needed.)
b. The interval is from
mm to
mm.
(Round to one decimal place as needed.)
c. Use this example to explain why a point estimate alone is usually insufficient for statistical inference. Choose the correct…
Chapter 14 Solutions
Elementary Statistics
Ch. 14.2 - Product Specs Table 14-1 lists process data...Ch. 14.2 - Prob. 2BSCCh. 14.2 - Prob. 3BSCCh. 14.2 - Prob. 4BSCCh. 14.2 - Prob. 5BSCCh. 14.2 - Prob. 6BSCCh. 14.2 - Prob. 7BSCCh. 14.2 - Prob. 8BSCCh. 14.2 - Prob. 9BSCCh. 14.2 - Prob. 10BSC
Ch. 14.2 - Prob. 11BSCCh. 14.2 - Prob. 12BSCCh. 14.2 - Prob. 13BBCh. 14.2 - Prob. 14BBCh. 14.3 - Prob. 1BSCCh. 14.3 - Prob. 2BSCCh. 14.3 - Prob. 3BSCCh. 14.3 - Interpreting a Control Chart After constructing a...Ch. 14.3 - Prob. 5BSCCh. 14.3 - Prob. 6BSCCh. 14.3 - Prob. 7BSCCh. 14.3 - Prob. 8BSCCh. 14.3 - Prob. 9BSCCh. 14.3 - Prob. 10BSCCh. 14.3 - Control Charts for p. In Exercises 512, use the...Ch. 14.3 - Prob. 12BSCCh. 14.3 - Prob. 13BBCh. 14 - Prob. 1CQQCh. 14 - Prob. 2CQQCh. 14 - Prob. 3CQQCh. 14 - Prob. 4CQQCh. 14 - Prob. 5CQQCh. 14 - Prob. 6CQQCh. 14 - Prob. 7CQQCh. 14 - Prob. 8CQQCh. 14 - Prob. 9CQQCh. 14 - Examine the following p chart for defective...Ch. 14 - Prob. 1RECh. 14 - Prob. 2RECh. 14 - Prob. 3RECh. 14 - Energy Consumption. Exercises 15 refer to the...Ch. 14 - Prob. 5RECh. 14 - Prob. 1CRECh. 14 - Prob. 2CRECh. 14 - Prob. 3CRECh. 14 - Prob. 4CRECh. 14 - Prob. 5CRECh. 14 - Prob. 6CRECh. 14 - Prob. 7CRECh. 14 - Prob. 8CRECh. 14 - Prob. 9CRECh. 14 - Prob. 10CRECh. 14 - FROM DATA TO DECISION Critical Thinking: Are the...
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
- Use Microsoft Excel to answer all the questions The grams of solids removed from a material (y) is thought to be related to the drying time. Ten observations obtained from an experimental study follow: x=(4.3 1.5 1.8 4.9 4.2 4.8 5.8 6.2 7.0 7.9) Y=(2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0) a) Construct a scatter diagram for the data. (b) Fit a simple linear regression model IFarrow_forwardThe owner of a moving company typically has their most experienced manager predict the total number of labor hours that will be required to complete an upcoming move. The approach has proven useful in the past, but the owner has their business objective of developing a more accurate method of predicting labor hours. In a preliminary effort to provide a more accurate method, the owner has decided to use the number of cubic feet moved as the independent variable and has collected data for 36 moves. The data is seen below: Hours Feet 24.00 545 13.50 400 26.25 562 25.00 540 9.00 220 20.00 344 22.00 569 11.25 340 50.00 900 12.00 285 38.75 865 40.00 831 19.50 344 18.00 360 28.00 750 27.00 650 21.00 415 15.00 275 25.00 557 45.00 1028 29.00 793 21.00 523 22.00 564 16.50 312 37.00 757 32.00 600 34.00 796 25.00 577…arrow_forwardSOLVE STEP BY STEP IN DIGITAL FORMAT 1.- The following data refer to the weight loss of certain mechanical parts (milligrams) due to friction when three different lubricants were used under controlled conditions: lubric. A 12.2,11.8,13.1,11.0, 3.9, 4.1,10.3, 8.4 lubric. B 10.9, 5.7,13.5, 9.4,11.4,15.7,10.8,14.0 lubric. C 12.7,13.6,11.7,18.3,14.3, 22.8, 20.4,12.2 Proof, if there is a difference between the lubricants in the loss of weight due to friction of certain mechanical parts.arrow_forward
- An experiment was conducted to determine the effect of type of fertilizer on the growth of a certain plant. Three types of fertilizers were tried. The data for growth of the plants (cm) measured after 3 months from the date of seedling is given 1 12.4 13.1 11.1 12.2 11.3 12.1 Type of fertilizer 2 16.1 16.4 17.2 16.6 17.1 16.8 3 31.5 30.4 31.6 32.1 31.8 30.9 Dr. Asieh Abtahl-Faculty of Mathematics and Statistics - Islamic Azad University of Shiraz-Iran (a) Determine the response variable, factors (kind of factor), level, number of treatments, number of replications, number of experiments. (b) Determine the type of design experiment. (c) Write the model of design experiment. (e) Test whether the type of fertilizer has an effect on the growth of the plants. Use α = 0.05. (f) Construct a 99 percent confidence interval estimate of the mean response for fertilizer 2 (g) Which fertilizer have different effect? h- Use Tukey's test to compare pairs of treatment means. Use α = 0.01.arrow_forwardAn existing urban freeway with 4 lanes in each direction has the following characteristics. Traffic data: Peak hour volume (in the peak direction): Trucks: PHF = 0.92 Geometric data: Lane width: Shoulder width: Total ramp density: Terrain: rolling 11 ft 6 ft 1.8 ramps per mile 7,210 veh/h 10% of peak hour volume Determine the LOS in the peak hour. (Assume commuter traffic and assume no RVs.) O LOS A O LOS B O LOS C O LOS D O LOS E O LOS F Show the demand flow rate (in pc/h/In), mean speed (in mi/h), and density (in pc/mi/In) for the given conditions. demand flow rate mean speed density pc/h/In mi/h pc/mi/Inarrow_forward1. yG)= 1.5arrow_forward
- The data in the table below consist of measurements y₁, y2, y3, and yn of the ramus bone at four different ages on each of 20 boys. 1. Find y. 2. Find Sn 3. Find R Ramus Bone Length at Four Different Ages for 20 Boys. Age Individual 1 23 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 8 yr (yi) 47.8 46.4 46.3 45.1 47.6 52.5 51.2 49.8 48.1 45 51.2 48.5 52.1 48.2 49.6 50.7 47.2 53.3 46.2 46.3 8½ yr (Y2) 48.8 47.3 46.8 45.3 48.5 53.2 53 50 50.8 47 51.4 49.2 52.8 48.9 50.4 51.7 47.7 54.6 47.5 47.6 9 yr (Y3) 49 47.7 47.8 46.1 48.9 53.3 54.3 50.3 52.3 47.3 51.6 53 53.7 49.3 51.2 52.7 48.4 55.1 48.1 51.3 9½ yr (Y4) 49.7 48.4 48.5 47,2 49.3 53.7 54.5 52.7 54.4 48.3 51.9 55.5 55 49.8 51.8 53.3 49.5 55.3 48.4 51.8arrow_forwardThe following data are given for a biogas digester suitable for the output of six cows. The volume of digester is 8.4 m, the volume of gas holder is 2.3 m and the retention time is 26 days. Find the height of gas holder height of gas holder = cmarrow_forwardAn experiment was conducted to study the extrusion process of biodegradable packaging foam. Two of the factors considered for their effect on the unit density (mg/ml) were the die temperature (145 °C vs. 155 °C) and the die diameter (3 mm vs. 4 mm). The results are stored in [Packaging Foam 1]. Source: Data extracted from W. Y. Koh, K. M. Eskridge, and M. A. Hanna, "Supersaturated Split-Plot Designs," Journal of Quality Technology, 45, January 2013, pp. 61-72.At the 0.05 level of significance, 3mm 4mm 57.22 145 72.54 145 53.60 66.70 145 48.13 49.28 145 69.89 44.14 145 62.78 58.37 145 55.18 53.98 155 57.50 63.03 155 54.17 46.73 155 73.86 60.17 155 90.28 46.78 155 88.19 43.27 155 82.61 56.93 Die Temperature a. is there an interaction between die temperature and die diameter? b. is there an effect due to die temperature? c. is there an effect due to die diameter? d. Plot the mean unit density for each die temperature for each die diameter. e. What can you conclude about the effect of die…arrow_forward
- A study was conducted at a local college to analyze the average cumulative GPA’s of students who graduated last year. Fill in the letter of the phrase that best describes each of the items below. The average cumulative GPA of students in the study who graduated from the college last year is? a. Data b. Sample c. Population d. Statistic e. Variable f. Parameterarrow_forwardPlease help with the attached questions.arrow_forwardPulling Apart Wood. How heavy a load (in pounds) is 4step needed to pull apart pieces of Douglas fir 4 inches long and 1.5 inches square? Here are data from students doing a laboratory exercise: 33,190 31,860 32,590 26,520 33,280 32,320 33,020 32,030 30,460 32,700 23,040 30,930 32,720 33,650 32.340 24,050 30,170 31,300 28,730 31,920 We are willing to regard the wood pieces prepared for the lab session as an SRS of all similar pieces of Douglas fir. Engineers also commonly assume that characteristics of materials vary Normally. Suppose that the strength of pieces of wood like these follows a Normal distribution, with standard deviation 3000 pounds. Is there statistically significant evidence at thea = 0.10 level against the hypothesis that the meanis 32,500 pounds for the two-sided alternative? Is there statistically significant evidence at thea = 0.10 level against the hypothesis that the meanis 31,500 pounds for the two-sided alternative?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
MATLAB: An Introduction with ApplicationsStatisticsISBN:9781119256830Author:Amos GilatPublisher:John Wiley & Sons Inc
Probability and Statistics for Engineering and th...StatisticsISBN:9781305251809Author:Jay L. DevorePublisher:Cengage Learning
Statistics for The Behavioral Sciences (MindTap C...StatisticsISBN:9781305504912Author:Frederick J Gravetter, Larry B. WallnauPublisher:Cengage Learning
Elementary Statistics: Picturing the World (7th E...StatisticsISBN:9780134683416Author:Ron Larson, Betsy FarberPublisher:PEARSON
The Basic Practice of StatisticsStatisticsISBN:9781319042578Author:David S. Moore, William I. Notz, Michael A. FlignerPublisher:W. H. Freeman
Introduction to the Practice of StatisticsStatisticsISBN:9781319013387Author:David S. Moore, George P. McCabe, Bruce A. CraigPublisher:W. H. Freeman
MATLAB: An Introduction with Applications
Statistics
ISBN:9781119256830
Author:Amos Gilat
Publisher:John Wiley & Sons Inc
Probability and Statistics for Engineering and th...
Statistics
ISBN:9781305251809
Author:Jay L. Devore
Publisher:Cengage Learning
Statistics for The Behavioral Sciences (MindTap C...
Statistics
ISBN:9781305504912
Author:Frederick J Gravetter, Larry B. Wallnau
Publisher:Cengage Learning
Elementary Statistics: Picturing the World (7th E...
Statistics
ISBN:9780134683416
Author:Ron Larson, Betsy Farber
Publisher:PEARSON
The Basic Practice of Statistics
Statistics
ISBN:9781319042578
Author:David S. Moore, William I. Notz, Michael A. Fligner
Publisher:W. H. Freeman
Introduction to the Practice of Statistics
Statistics
ISBN:9781319013387
Author:David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:W. H. Freeman
Hypothesis Testing using Confidence Interval Approach; Author: BUM2413 Applied Statistics UMP;https://www.youtube.com/watch?v=Hq1l3e9pLyY;License: Standard YouTube License, CC-BY
Hypothesis Testing - Difference of Two Means - Student's -Distribution & Normal Distribution; Author: The Organic Chemistry Tutor;https://www.youtube.com/watch?v=UcZwyzwWU7o;License: Standard Youtube License