Choose the correct answer.You should write your reason for choosing correct answer.2-A Suppose that a single-factor experiment with four lev-els of the factor has been conducted. There are six replicatesand the experiment has been conducted in blocks. The errorsum of squares is 500 and the block sum of squares is 250. Ifthe experiment had been conducted as a completely random-ized design the estimate of the error variance o? would be.(a) 25.0(b) 25.5(c) 35.0(d) 37.5(e) None of the aboveDr. Asieh Abtahi - Faculty of Mathematics and Statistics-slamic Azad university af Shiraz - Iran2-B Blocking is a technique that can be used to control thevariability transmitted by uncontrolled nuisance factors in anexperiment.(a) True(b) False2-C An interaction effect in the model from a factorialexperiment involving quantitative factors is a way of incorpo-rating curvature into the response surface model representationof the results.(a) True(b) FalseDr. Asieh Abtahi - Faculty of Mathematics and Statistics-islamic Arad University of Shiraz - Iran2-DIn a 2* factorial design, the number of degrees of free-dom for the model, assuming the complete factorial model, is(a) 7(b) 5(c) 6(d) 11(e) 12(f) none of the above

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MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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One sample has n=7 and SS=35 and a second sample has n =17 and SS =45. What is the pooled variance for these two samples?
Homser Lake, Oregon, has an Atlantic salmon catch-and-release program that has been very successful. The average fisherman's catch has been ? = 9.0 Atlantic salmon per day. Suppose that a new quota system restricting the number of fishermen has been put into effect this season. A random sample of fishermen gave the following catches per day:12 6 11 12 5 0 27 8 7 6 3 12 12 I need help with (b) and the value of the sample test statistic
disproportionately often. In fact, research has shown that if you randomly draw a number from a very large data file, the probability of getting a number with "1" as the leading digit is about 0.301. Now suppose you are an auditor for a very large corporation. The revenue report involves millions of numbers in a large computer file. Let us say you took a random sample of n = 223 numerical entries from the file and r = 48 of the entries had a first nonzero digit of 1. Let p represent the population proportion of all numbers in the corporate file that have a first nonzero digit of 1.(i) Test the claim that p is less than 0.301. Use ? = 0.05. (a) What is the level of significance?State the null and alternate hypotheses. H0: p < 0.301; H1: p = 0.301H0: p = 0.301; H1: p > 0.301 H0: p = 0.301; H1: p < 0.301H0: p = 0.301; H1: p ≠ 0.301 (b) What sampling distribution will you use? The standard normal, since np > 5 and nq > 5. The standard normal, since np < 5 and nq <…
27
Geographer Lalli is interested in investigating whether there is a difference in average humidity in four different types of soil. To test this hypothesis, he took 10 samples for each type of soil and measured the humidity. Lalli is slippery in statistics and he decided to perform a variance analysis to analyze the data. He had started filling out a variance analysis table but could not complete it. Fervic sum Degrees Among square sums Between groups 93,85 xx xx Within groups xx xx xx Whole 290,67 xx a) Finish filling in the fields that Lalli did not manage to fill in (marked xx)b) Carry out an appropriate hypothesis test to verify Lalla's hypothesis. What conclusion can he draw (use α = 0.05)? Show all six steps.
2. In a population it is estimated that 20% have a desired trait of interest for the researcher. The researcher wants to know how many people on average he has to draw from a population to get 2 people with the trait. Use rows 20-24 of the Random Number Table to carry out the simulation. Explain clearly how you set up the problem and report your findings. Answer:
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Туре Freq. 11.15 A theory says that in a certain population, half the objects are of type A and the remainder are evenly divided among three types, B, C, and D. A random sample from the population breaks down as shown in the table at right. Does the data show 25 13 8. a statistically significant departure from what the theory predicts? Test using a = .05. ABCD
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Q.4. In a study conducted to compare the yields of 4 treatments, the experimenter uses a plot with 4 rows and 4 columns. Which design is most likely to be used? Also, calculate the error, df.

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