8. Consider the following sets of replicate measurements: *A 9.5 8.5 9.1 9.3 9.1 B 55.35 55.32 55.20 *C 0.612 0.592 0.694 0.700 D 5.7 4.2 5.6 4.8 5.0 *E 20.63 20.65 20.64 20.51 F 0.972 0.943 0.986 0.937 0.954
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Introduction:
It is required to obtain the standard deviation and coefficient of variation for the given datasets.
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- Find sample size. CI= 75% E=.06 sample prop.= 41/81Use the given data to find the minimum sample size required to estimate the population proportion. Margin of erro: 0.0008; confidence leve: 99%; p and q unknown.Suppose we want to test whether or not the average SAT score at the University of Seychelles is significantly larger than the average SAT score at Vermont. Taking a random sample, we manage to get the following seven scores from Vermont students: Vermont: 1340 1500 1430 1440 1380 1470 1290 and the following nine scores from Seychelles students: Seychelles: 1540 1480 1390 1450 1440 1350 1520 1400 1600 Assuming that the standard deviation in SAT scores for students at Seychelles and Vermont is the same and equal to 77 points, test at the α=:05 significance level whether or not the average SAT score atthe University of Seychelles is larger than the average SAT score at Vermont.
- Use the following Frequency table to calculate the standerd deviation. Class Frequency 2……4 4 5……7 6 8…….10 3 11…..13 2 14…..16 5Determine the sample size of a research on: ( 25%)a.) 1,529 freshmen at 95% accuracy ( 5% error).b.) 471 sophomore at 95% accuracy (5% error).c.) 441 Junior at 99% accuracy ( 1% error).d.) 652 senior at 99% accuracy ( 1% error).e.) 10,000 households at 90% accuracy ( 10% error).What is the Mean and Std Deviation for: Statement 1 % 2 % 3 % 4 % 5 % N M SD I will consider visiting the same destination for my next tour 2.3 40.9 21.8 30.4 4.7 257 I will consider visiting the same travel agency for my next tour 1.2 7.4 37.7 47.5 6.2 257 I will consider switching to another airline for price and experience 0.4 3.5 10.1 74.7 11.3 257 I will consider switching to another travel agency that offers a cheaper package 0.4 12.5 18.7 59.1 9.3 257 I will consider switching to another hotel which is smaller and cheaper than the one I am used to 0.8 16.7 21.8 55.6 5.1 257
- calculate the standard deviation of the following four observations: 13,14,16,18Calculate the sample size from the following information: E = 0.5, a= 5, c = 0.95A lecturer at WIN wanted to know if he can predict student’s quiz results by asking them tocomplete a simple survey. The result of the survey is found in the file: Assignment 2 sem22020data set 1. Quiz Results EQR Study Hrs Age Sex BBT MB MC AuHS LM 15 10 3 19 0 0 1 1 0 1 14 15 4 24 0 0 1 0 0 1 9 15 1 20 0 10 1 0 0 1 6 10 3 21 0 0 1 1 0 1 14 15 4 21 0 9 1 0 0 1 12 10 6 21 0 2 0 1 0 1 12 13 2 21 1 8 1 0 0 0 15 15 0 20 0 8 1 0 0 1 12 15 3 20 0 10 1 0 0 1 13 15 0.2 19 0 8 1 0 0 1 15 15 2 20 0 6 1 0 1 1 12 14 5 20 0 5 1 1 1 1 14 15 7 22 0 8 0 0 0 0 7 7 10 21 1 7 0 0 1 0 11 15 5 24 0 0 1 0 0 1 10 10 3 22 1 0 1 0 0 1 13 11 3 23 1 1 1 1 1 1 13 15 2 22 1 8 0 0 0 0 13 12 4 20 1 7 1 0 1 0 13 10 3 20 1 0 1 0 0 1 8 13 5 20 1 8 0 0 0 0 12 13 5 22 0 5 0 0 0 1 13 15 8 22 0 5 0 1 0 1 10 13 4 23 1 7 1 0 0 1 13 13 0.5 20 1 0 0 0 0 0 12 13 0.5 20 1 0 1 0 0 0 15 15 2 21 0 10 1 0 0 1 10 13 6 22 0 6 1 1 0 1 11 8 5 20 0 10 0 0 1 0 12 10 4 19 1…
- The accompanying data are lengths (inches) of bears. Find P15 35.5 37.5 39.5 39.5 41.5 42.5 44.0 46.0 46.5 47.0 48.5 48.549.5 50.5 52.5 52.5 52.5 52.5 54.5 57.5 57.8 58.0 58.5 58.559.0 60.0 60.5 60.5 61.0 61.5 61.5 62.5 63.0 63.5 63.5 63.564.5 64.5 65.0 65.5 66.5 66.5 68.0 68.0 70.5 70.5 71.5 72.072.0 72.0 73.0 73.0 75.5 76.5Calculate the Mean and Std Deviation for: Statement 1 % 2 % 3 % 4 % 5 % N M SD I will consider visiting the same destination for my next tour 2.3 40.9 21.8 30.4 4.7 257 I will consider visiting the same travel agency for my next tour 1.2 7.4 37.7 47.5 6.2 257 I will consider switching to another airline for price and experience 0.4 3.5 10.1 74.7 11.3 257 I will consider switching to another travel agency that offers a cheaper package 0.4 12.5 18.7 59.1 9.3 257 I will consider switching to another hotel which is smaller and cheaper than the one I am used to 0.8 16.7 21.8 55.6 5.1 2573. J.D. Power and Associates conducts vehicle quality surveys to provide automobile manufacturers with consumersatisfaction information about their products (Vehicle Quality Survey, January 2010). Using a sample of vehicleowners from recent vehicle purchase records, the survey asks the owners a variety of questions about their newvehicles, such as those shown below. For each question, state whether the data collected are categorical orquantitative and indicate the measurement scale being used.a. Did you purchase or lease the vehicle?b. What price did you pay for the vehicle?c. How likely would you be to recommend this vehicle to a friend? (Definitely Not, Probably Not, Probably Will,and Definitely Will)d. What is your overall rating of your new vehicle (Unacceptable, Average, Outstanding, or Truly Exceptional)?