Times for a surgical procedure are normally distributed. There are two methods. Method A has a mean of 21 minutes and a standarddeviation of 5 minutes, while method B has a mean of 25 minutes and a standard deviation of 25 minutes.(a) Which procedure is preferred if the procedure must be completed within 23 minutes?O Method AO Method BO Either Method(b) Which procedure is preferred if the procedure must be completed within 32.0 minutes?O Method AO Method BO Either Method(c) Which procedure is preferred if the procedure must be completed within 29 minutes?OMethod AO Method BO Either MethodNextPrey19 of 19here to searchopt914414 outs4747to 4016is券

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Answered: Times for a surgical procedure are…

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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The Gidget Company makes widgets. If the production process is working properly, it turns out that the widgets are normally distributed with a hean length of at least 2.6 feet. Larger widgets can be used or altered but shorter widgets must be scrapped. You select a sample of 25 widgets, and the mean length is 2.46 feet and the sample standard deviation is 0.16 foot. Do you need to adjust the production equipment? Complete parts (a) through (d). Click here to view page 1 of the critical values for the t Distribution. Click here to view page 2 of the critical values for the t Distribution. a. If you test the null hypothesis at the 0.05 level of significance, what decision do you make using the critical value approach to hypothesis testing? What are the null and alternative hypotheses for this test? 'Α. H μ22.6 H4: µ 2.6 O C. Ho:H22.46 H,:H2.6 H,: µs2.6 O E. Ho: us2.46 H,:µ>2.46 OF. Ho:H<2.6 H1:µ22.6 What is the test statistic for this test? - 4.3750 (Round to four decimal places as…
Animals of a given weight are operated on in a veterinary hospital. The dose of anesthetic A (in mg) required to render animals suitably unconscious for the operation is normally distributed with mean 120 and standard deviation 20. The lethal dose L (in mg) of the same anesthetic for these animals is also normally distributed, with mean 350 and standard deviation 50. (Help on part a and b) a. Find a dose "D" that the vet should administer, in order that 99.9% of animals will be suitably unconscious for the operation. b. If the dose "D" that you found in part a is administered, what percentage of animals die?
Times for a surgical procedure are normally distributed. There are two methods. Method A has a mean of 35 minutes and a standard deviation of 3 minutes, while method B has a mean of 39 minutes and a standard deviation of 1.5 minutes. (a) Which procedure is preferred if the procedure must be completed within 34 minutes? O Method A O Method B O Either Method (b) Which procedure is preferred if the procedure must be completed within 40.0 minutes? O Either Method O Method A O Method B (c) Which procedure is preferred if the procedure must be completed within 43 minutes? OMethod A O Method B O Either Method Prev 19 of 19 Next e to search hp
Cell Phone Lifetimes A recent study of the lifetimes of cell phones found the average is 23.2 months. The standard deviation is 3.1 months. If a company provides its 33 employees with a cell phone, find the probability that the mean lifetime of these phones will be less than 23.8 months. Assume cell phone life is a normally distributed variable, the sample is taken from a large population, and the correction factor can be ignored. Use a TI-83 Plus/TI-84 Plus calculator. Round your answer to at least four decimal places. P(X<23.8)=
In a study on running and happiness, runners indicated the number of miles they ran in a day and their subsequent score on a Happiness Survey (higher score = greater happiness). Runner # of miles (x) Happiness Score (y) 1 16 12 2 4 3 12 14 4 2 8 For these data: The mean of miles run is: 8.50 The mean of the Happiness scores is: 10.00 The standard deviation of the Miles scores is: 5.72 The standard deviation of the Happiness scores is: 3.16 In your submission, please include a copy of the SPSS or Excel output and answer the following: A. What is the r and r? value? B. Based on Pearson's r and r2 value, describe the relationship (direction/strength) that exists between # of miles run and Happiness scores. C. Create a scatterplot for the data using Excel or SPSS (include output in your submission). D. Insert the prediction line from Excel/SPSS on your scatterplot.
The incomes of math tutors in a tutoring center of a university are normally distributed with a mean of $1100 and a standard deviation of $150 what percentage of tutors earn less than $900 a month
Suppose the scores of students on a Statistics course are Normally distributed with a mean of 596 and a standard deviation of 33.What percentage of the students scored between 596 and 662 on the exam? (Give your answer to 3 significant figures.)_________%
Times for a surgical procedure are normally distributed. There are two methods. Method A has a mean of 23 minutes and a standard deviation of 5 minutes, while method B has a mean of 27 minutes and a standard deviation of 2.5 minutes. a. Which procedure is preferred if the procedure must be completed within 24 minutes?Method A Method B Either Method b. Which procedure is preferred if the procedure must be completed within 34.5 minutes? Method A Merhod B Either Method c. Which procedure is preferred if the procedure must be completed within 31 minutes? Method A Method B Either Method
Times for a surgical procedure are normally distributed. There are two methods. Method A has a mean of 31 minutes and a standard deviation of 2 minutes, while method B has a mean of 35 minutes and a standard deviation of 1.0 minutes. (a) Which procedure is preferred if the procedure must be completed within 30 minutes? O Method A O Method B O Either Method (b) Which procedure is preferred if the procedure must be completed within 38.0 minutes? O Either Method O Method A O Method B (c) Which procedure is preferred if the procedure must be completed within 37 minutes? O Method B O Either Method O Method A < Prev 19 of 19 Next to search 22 立
A company selling a new type of laptop battery advertises that it has a méan lifetime of 5 years. If you were in charge of quality control at the factory, which one of the following standard deviations of battery life spans would you prefer? 2 months. O 2 years O 5 years 27
Bowser Bites Industries (BBI) sells large bags of dog food to warehouse clubs. BBI uses an automatic filling process to fill bags. When the equipment is working correctly, the weights of the filled bags are approximately normally distributed with a mean of 50 kilograms and a standard deviation of 1.25 kilograms. Out of a pallete of 18 bags of dogfood, 2 bags will weigh no more than how many kg? i the minimum weight in kilograms a bag of dogfood could be and remain in the heaviest 15% of all bags filled.
When using 1-Var Stats on a scientific or graphing calculator, the resulting statistical output includes two values for the standard deviation of the data set. These values are labeled as Sxand σx in the statistical output. Why is it necessary to give two values for the standard deviation? How would you choose which one to use as the standard deviation of a data set you are working with? Be sure to explain the difference between these two values as you answer these questions

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