Home Work 7.2-2 Test Actual Capacity Predicted Capacity P N=A/P As indicated in the table, five piles have been tested until failure; the load measured denotes the actual capacity of the given pile. Observe that the capacity of each pile predicted by a theoretical model as indicated in the table. The factor N is simply the ratio of the actual pile capacity to the predicted pile capacity; i.e., N = A/P. (a) Determine the 95% confidence interval of the mean value of N. No. A 20.5 13.6 1.51 at failure 18.5 20.4 0.91 3 10.0 8.8 1.14 15.3 14.3 1.07 26.2 22.8 1.15 HW s-I f of N sof N has also been 1.154 0.22 Ans. (0.881, 1.427). (b) In order to estimate the mean value of N to + 0.02 with 90% confidence, Assume that the variance of N, a?, is known and equal to 0.045 for this part. (Ans. 300). how many additional piles should be tested?

8.81 Underwater sound-locating ability of alligators. Alligators have shown the ability to determine the direction of an air- borne sound. But can they locate underwater sounds? This was the subject of research published in the Journal of Herpetology (Dec. 2014). Alligators inhabiting the flood control canals in the Florida Everglades were monitored for movement toward a sound produced from a submerged div- ing bell. Movements within a 180° are of the direction toward the sound were scored as movements toward the sound; all movements in other directions were scored as movements away from the sound. Consequently, the researchers assumed that the proportion of movements toward the sound expected by chance is 180°/360° = 5. In a sample of n = 50 alliga- tors, 42 moved toward the underwater sound. a. Give the null and alternative hypotheses for testing whether the true proportion of alligators that move to- ward the underwater sound is higher than expected by chance. b. In a sample of n =…

Eyeglassomatic manufactures eyeglasses for different retailers.  They test to see how many defective lenses they made in a time period.  Table #4.2.2 gives the defect and the number of defects. Table #4.2.2: Number of Defective Lenses Defect type Number of defects Scratch 5865 Right shaped – small 4613 Flaked 1992 Wrong axis 1838 Chamfer wrong 1596 Crazing, cracks 1546 Wrong shape 1485 Wrong PD 1398 Spots and bubbles 1371 Wrong height 1130 Right shape – big 1105 Lost in lab 976 Spots/bubble – intern 976   Find the probability of picking a lens that is scratched or flaked. Find the probability of picking a lens that is the wrong PD or was lost in lab. Find the probability of picking a lens that is not scratched. Find the probability of picking a lens that is not the wrong shape.

NW 6.12 CORPORATE SUSTAINABILITY OF CPA FIRMS. Corporate sustainability refers to business practices designed CORSUS around social and environmental considerations. Refer to the Business and Society (March 2011) study on the sustainability behaviors of CPA corporations, Exercise 2.23 (p. 59). Recall that the level of support for corporate sustainability (measured on a quantitative scale ranging from 0 to 160 points) was obtained for each in a sample of 992 senior managers at CPA firms. Higher point values indicate a higher level of support for sustainability. The accompanying StatCrunch printout gives a 99% confidence interval for the mean level of support for all senior managers at CPA firms. One sample T confidence interval: μ: Mean of variable 99% confidence interval results: Variable Sample Mean Std. Err. DF L. Limit U. Limit Support 67.75504 0.85314633 991 65.553241 69.95684 a. Locate the 99% confidence interval on the printout. b. Use the sample mean and standard deviation on the…

Use the given information to answer subquestion 1.a, 1.b, and 1.c

Q5) Refer to the data given below and answer the following questions using appropriate function/formula: caga B CD G H K 1 Name Attendance Dates Quiz 1 Quiz 2 Quiz 3 Quiz 4 Quiz 5 8/10/2020 8/10/2020 8/10/2020 8/10/2020 5/11/2020 3 Ali P P 5 6 10 Ahmed P A P 7 4 5 Zia A 7 6 4 4 Sadaf A P 6 4 9 7 Haris A 4 3 Page 1 of 2 Note: Blank in the attendance dates show that student was unregistered. Use cell references in all the functions. a) Calculate the number of classes in which Haris was unregistered. b) Evaluate by formula, the average marks obtalned by Zla In the quizzes. c) Calculate the total number of classes in which Ahmed was registered as well as in which he was unregistered. d) Display the minimum marks obtained by any student in any of the quizzes. IT e) Calculate the average of best four quizzes of Ali. f) Evaluate the 2nd highest marks obtained by any student in any of the quizzes. 9) Compute the number of students in the class. h) Count the number of cells with a value greater…

of a Cone Task Cards AClasswork for 8th Grade Science x its itslearning d/e/1FAlpQLSfn5zcuL9YlydBODSTPgn5YetlzaClzFMzjwJF93IKihoXmyQ/viewform Find the Volum8 158.1 (Use 3.14 as pi) units3 4 339.29 units3 150.7 units3 6. 393.2 units3 #2 158.1 339.29 O 150.7 O 393.2 O O O

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Student 1:33 PM Wed Apr 21 * 74% O 9 Q E STA+2023+EC+C12 Home Insert Draw Layout Review View Calibri Bold (Body в I U А.. A Read Only - You can't save changes to this file. Save a copу 2. A researcher wanted to determine whether bicycle deaths were uniformly distributed over the days of the week. She randomly selected 200 deaths that involves a bicycle recorded the day of the week on which the death occurred and obtained the following results. Is there reason to believe fatalities occur with equal frequency with respect to the week. Let a=0.05 Day of the week Sunday Monday Tuesday Wednesday Thursday Friday Saturday Frequency 16 35 16 28 34 41 30 || •..

Student 1:33 PM Wed Apr 21 * 73% O O Q B STA+2023+EC+C12 Home Insert Draw Layout Review View Calibri Bold (Body В I B I U А.. A Read Only - You can't save changes to this file. Save a copу 3. Are health and happiness related? The following data represents the level of happiness and level of health for a random sample of individuals from the General Social Survey. Does the evidence suggest that health and happiness are related. Let a=0.05 Education/Health Excellent Less than High Good Fair Рor 72 202 199 62 School High School Junior College 465 877 358 108 80 138 49 11 Bachelor 229 276 64 12 Graduate 130 147 32 2 ||