Considers the the following output from a machine learning algorithm that predicts whether an email message is spam (YES) or not (NO) on a test set of 165 messages. Predicted: Predicted: n=165 NO YES Actual: NO 50 10 Actual: YES 100 Compute the accuracy of the model (rounded to two points after the decimal points) and provide the value in the space below Answer: NO
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- Test each of the following by performing the steps in hypothesis testing. The time coding an algorithm by 16 programmers from one company showed a mean time of 107 minutes and a standard deviation of 10 minutes, while the time by 14 programmers from another company showed a mean time of 112 minutes and a standard deviation of 8 minutes. Is there a significant difference between the two groups at 0.01.A machine learning engineer is testing the speed at which his new computer graphics card can train a deep learning algorithm on a dataset. The engineer tested the speed of the graphics card on a dataset using the 10-fold cross-validation technique, which is testing 10 times the process.training-testing with the same dataset splitting size. From the 10 times of the training-testing process, the following training time data were obtained (in hours): 11,2 ; 10,1 ; 12,4 ; 11,0 ; 10,8 ; 12,2 ; 11,6 ; 12,4 ; 12,5 ; 10,6 a. Calculate the 99% two-sided confidence interval (99% two-sided confidence interval) for the graphics card's average training time.b. Calculate the upper 90% confidence interval (upper confidence interval of 90%) for the average training time of the graphics card.c. Calculate the 97.5% lower confidence interval (97.5% lower confidence interval) for the graphics card's average training time.d. Calculate the Margin of Error (MOE) of the graphics card's average training time…A systems analyst tests a new algorithm designed to work faster than the currently-used algorithm. Each algorithm is applied to a group of 7373 sample problems. The new algorithm completes the sample problems with a mean time of 24.2824.28 hours. The current algorithm completes the sample problems with a mean time of 26.9726.97 hours. Assume the population standard deviation for the new algorithm is 3.5873.587 hours, while the current algorithm has a population standard deviation of 4.0394.039 hours. Conduct a hypothesis test at the 0.050.05 level of significance of the claim that the new algorithm has a lower mean completion time than the current algorithm. Let μ1μ1 be the true mean completion time for the new algorithm and μ2μ2 be the true mean completion time for the current algorithm. Step 3 of 4 : Determine the decision rule for rejecting the null hypothesis H0H0. Round the numerical portion of your answer to three decimal places.
- A systems analyst tests a new algorithm designed to work faster than the currently-used algorithm. Each algorithm is applied to a group of 7373 sample problems. The new algorithm completes the sample problems with a mean time of 24.2824.28 hours. The current algorithm completes the sample problems with a mean time of 26.9726.97 hours. Assume the population standard deviation for the new algorithm is 3.5873.587 hours, while the current algorithm has a population standard deviation of 4.0394.039 hours. Conduct a hypothesis test at the 0.050.05 level of significance of the claim that the new algorithm has a lower mean completion time than the current algorithm. Let μ1μ1 be the true mean completion time for the new algorithm and μ2μ2 be the true mean completion time for the current algorithm. Step 1 of 4 : State the null and alternative hypotheses for the test.People are classified as hypertensive if their systolic blood pressure (SBP) is higher than a specified level for their age group, according to the algorithm in the table below. Assume SBP is normally distributed with mean, and standard given in the table for age groups 1 – 14 and 15 – 44, respectively. Define a family as a group of two people in age group 1 – 14 and two people in age group 15 – 44. A family is classified as hypertensive if at least one adult and at least one child are hypertensive. i. What proportion of 1 – 14-year-olds are hypertensive? ii. What proportion of 15 – 44-year-olds are hypertensive?People are classified as hypertensive if their systolic bloodpressure (SBP) is higher than a specified level for their agegroup, according to the algorithm in Table 5.1.Assume SBP is normally distributed with mean andstandard deviation given in Table 5.1 for age groups 1−14and 15−44, respectively. Define a family as a group of twopeople in age group 1−14 and two people in age group15−44. A family is classified as hypertensive if at least oneadult and at least one child are hypertensive. 5.17) What proportion of 1- to 14-year-olds are hypertensive? 5.18) What proportion of 15- to 44-year-olds are hyper-tensive?
- Can I please get some assistance with this Prim's algorithm?A systems analyst tests a new algorithm designed to work faster than the currently-used algorithm. Each algorithm is applied to a group of 38 sample problems. The new algorithm completes the sample problems with a mean time of 22.07 hours. The current algorithm completes the sample problems with a mean time of 22.33 hours. Assume the population standard deviation for the new algorithm is 4.674 hours, while the current algorithm has a population standard deviation of 5.185 hours. Conduct a hypothesis test at the 0.05 level of significance of the claim that the new algorithm has a lower mean completion time than the current algorithm. Let ?1be the true mean completion time for the new algorithm and ?2 be the true mean completion time for the current algorithm. Pay attention to spaces between words. H0: Ha: z-Test Statistic (round to two decimal places) = p-value (round to four decimal places) = Conclusion (write "R" for reject H0, and "F" for fail to reject H0):Consider the following parameters:a = 1,298, Xo = 6,286, C = 9,807 and M = 341.i). Using the linear congruential method, determine the first 10 random numbers.ii). How robust is this algorithm?
- Consider the given graph below. The weights represent the time, in minutes of reaching one destination from another destination. Using the Brute Force Method in this complete weighted graph, determine all the Hamilton circuits starting at L and its optimal solution.A research center claims that at least 23% of adults in a certain country think that their taxes will be audited. In a random sample of 1000 adults in that country in a recent year, 19% say they are concerned that their taxes will be audited. At α=0.05, is there enough evidence to reject the center's claim? Complete parts (a) through (e) below. (a) Identify the claim and state H0 and Ha.Authors of a computer algebra system wish to compare the speed of a new computational algorithm to the currently implemented algorithm. They apply the new algorithm to 50 standard problems; it averages 8.16 seconds with standard deviation 0.17 second. The current algorithm averages 8.22 seconds on such problems. Test, at the 1% level of significance, the alternative hypothesis that the new algorithm has a lower average time than the current algorithm.