A new batch of processors are to be tested for effciency. The same specific set of tasks are runby each of a set of randomly selected 10 processors, and the recorded execution times for eachare as follows (rounded, in seconds):7,11,9,7,13,10,8,9,11,10,8,12,8,9,10Answer the following questions. The answers will be numbers or letters (not case senisitive):(a) Write the five point summary of this data set: ((b) The interquartile range of this data set is(c) Are there any outliers? Aswer Y for yes and N for no.(d) Is this data set left skewed (L), right skewed (R) or symmetric? Answer L, R or S:(e) The mean of this data set isand the sample standard deviation isGive your answers with EXACT twodecimals. DO NOT ROUND.(f) Based on this data and using sample standard deviation as an estimator, a 90% confidence interval for the mean execution time is: (

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A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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Diana tested the effect of number of items on short-term memory in dolphins. She randomly presented visual arrays with 1, 2, 3, 5, 8, 13, 21 items for five minutes. She asked 3 dolphins to remember the items. She then presented a new array with old and new items. The dolphins responded by touching the items with their tails. She hypothesized that Dolphins could remember 3 items accurately, but not more than that. What would be the family wise error rate if she conducted the maximum number of pairwise comparisons give an pairwise alpha of 0.01?
Given a set ofn distinct data pairs, exactly how many interpolating polynomials can be found to pass through these points? Select one: а. n b. n-1 С. 1 d. 0
Students in two elementary school classrooms were given two versions of the same test, but with the order of the questions arranged from easier to more difficult in version A and in reverse order in version B. Randomly selected students from each class were given version A and the rest given version B. The results are Version A:n1=31,x¯1=83,s1=4.6Version B:n2=32,x¯2=78,s2=4.3 Use a 0.01 significance level to test the claim that Version A is easier than version B.(Make sure you have the four steps shown similar to the examples that I gave) Assume that the two independent samples have been randomly selected from normally distributed populations. Instruction: 1) Must contains 4 steps as shown on the instructor's video. 2) Must identify whether the null hypothesis or the alternative hypothesis is the claim. 3) When doing the calculation, do not calculate standard error. 4) When finding the p-value, must show whether it is left-, right-, or two-tailed. 5) When drawing conclusion, must…
Dr. Moas is interested in examining how environmental cues affect memory. She asks 15 students to study 10 obscure words for a vocabulary exam. All students take the final vocabulary exam in Classroom A. She randomly assigns participants to one of three locations to study for the exam: the same classroom (Classroom A), a different classroom (Classroom B), or a completely separate location, the school gym. Then, she records the number of vocabulary words that each student correctly defines on the exam. The data is as follows: Participant Study Location Vocabulary Words Answered Correctly 1 Same Classroom 9 2 Same Classroom 8 3 Same Classroom 10 4 Same Classroom 8 5 Same Classroom 9 6 Different Classroom 9 7 Different Classroom 8 8 Different Classroom 7 9 Different Classroom 8 10 Different Classroom 7 11 School Gym 6 12 School Gym 7 13 School Gym 5 14 School Gym 6…
Dr. Moas is interested in examining how environmental cues affect memory. She asks 15 students to study 10 obscure words for a vocabulary exam. All students take the final vocabulary exam in Classroom A. She randomly assigns participants to one of three locations to study for the exam: the same classroom (Classroom A), a different classroom (Classroom B), or a completely separate location, the school gym. Then, she records the number of vocabulary words that each student correctly defines on the exam. The data is as follows: Participant Study Location Vocabulary Words Answered Correctly 1 Same Classroom 9 2 Same Classroom 8 3 Same Classroom 10 4 Same Classroom 8 5 Same Classroom 9 6 Different Classroom 9 7 Different Classroom 8 8 Different Classroom 7 9 Different Classroom 8 10 Different Classroom 7 11 School Gym 6 12 School Gym 7 13 School Gym 5 14 School Gym 6…
The following data represents the number of engineers, technicians and administrators for 60 establishments affiliated with the Ministry of Industry and Trade. Required: tabulate the data in a recursive dump table using Yule and Sturges methods: 60, 76, 80, 120, 132, 82, 90, 65, 68, 73, 150, 142, 157, 164, 88, 90, 98, 101, 103, 110, 119, 116, 120, 126, 109, 114, 120, 122, 111, 116, 90, 78, 93, 95, 98, 104, 120, 113, 121 , 119, 125, 126, 130, 131, 136, 118, 142, 148, 150, 154, 122, 123, 139, 125, 156, 154, 136 , 137, 110, 136
The owner of a dry cleaning business studied the number of dry-cleaned items that were returned for rework per day for a 4-week period (Mon-Sat). The results are given below. Complete (a) through (c). Time Items Returned Items Returned 1 6 Time 13 Items Returned 10 4 16- 2 10 12 Time AMANY 3 4 14 15 16 17 5 10 6 4 5 가더 24 5 9 6 10 18 9 7 5 19 20 10 10 a. Construct a c chart for the items per day that are returned for rework. Do you think that the process is in a state of statistical control? Choose the correct chart below. O A. O Items Returned B. 8 6 16- 0 9 8 21 5 Full data set 10 11 12 6 5 7 22 23 24 9 9 12 12 Time ² 24 O C. Items Returned 16- wwwww 12 Time 24
If 30 participants each completed a memory task three times — once each after having no, moderate, or high levels of caffeine, calculate the total degrees of freedom.
A manufacturing plant makes computer chips 24 hours a day. Employees work one of three, 8 hour shifts during the morning (2am-10am), day (10am-6pm), and night (6pm-2am). Below are data on the number of defective chips on a randomly chosen 24 hour period. Shift Morning Day Night Number of Defective Chips 23 26 47 Total Chips Manufactured 330 330 330 The plant manager thinks there might be more defective computer chips manufactured during the night shift compared to the day shift. Give appropriate statistical evidence to test the managers' claim.
To study the effectiveness of possible treatments for insomnia, a sleep researcher conducted a study in which four participants were instructed to count sheep (the Sheep Condition), four were told to concentrate on their breathing (the Breathing Condition), and four were not given any special instructions. The average number of minutes taken for each participant to fall asleep over the next seven days were 14, 28, 27, and 31 minutes for the Sheep condition; 25, 22, 17, and 14 minutes for those in the Breathing condition; and 45, 33, 30, and 41 for the Control condition. Using the .05 significance level, did the different techniques have different effects? What is the null hypothesis? What is the research hypothesis?

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