Question

In: Statistics and Probability

A systems analyst tests a new algorithm designed to work faster than the currently-used algorithm. Each...

A systems analyst tests a new algorithm designed to work faster than the currently-used algorithm. Each algorithm is applied to a group of 51 51 sample problems. The new algorithm completes the sample problems with a mean time of 24.43 24.43 hours. The current algorithm completes the sample problems with a mean time of 24.68 24.68 hours. The standard deviation is found to be 3.481 3.481 hours for the new algorithm, and 3.420 3.420 hours for the current algorithm. Conduct a hypothesis test at the 0.05 0.05 level of significance of the claim that the new algorithm has a lower mean completion time than the current algorithm. Let μ1 μ 1 be the true mean completion time for the new algorithm and μ2 μ 2 be the true mean completion time for the current algorithm. Step 2 of 4: Compute the value the test statistic. Round to two decimal places.

Solutions

Expert Solution



Related Solutions

A systems analyst tests a new algorithm designed to work faster than the currently-used algorithm. Each...
A systems analyst tests a new algorithm designed to work faster than the currently-used algorithm. Each algorithm is applied to a group of 52 sample problems. The new algorithm completes the sample problems with a mean time of 16.34 hours. The current algorithm completes the sample problems with a mean time of 16.93 hours. The standard deviation is found to be 3.913 hours for the new algorithm, and 3.6243.624 hours for the current algorithm. Conduct a hypothesis test at the...
A systems analyst tests a new algorithm designed to work faster than the currently-used algorithm. Each...
A systems analyst tests a new algorithm designed to work faster than the currently-used algorithm. Each algorithm is applied to a group of 41sample problems. The new algorithm completes the sample problems with a mean time of 23.42 hours. The current algorithm completes the sample problems with a mean time of 26.39 hours. Assume the population standard deviation for the new algorithm is 3.442 hours, while the current algorithm has a population standard deviation of 5.364 hours. Conduct a hypothesis...
A systems analyst tests a new algorithm designed to work faster than the currently-used algorithm. Each...
A systems analyst tests a new algorithm designed to work faster than the currently-used algorithm. Each algorithm is applied to a group of 5454 sample problems. The new algorithm completes the sample problems with a mean time of 11.9011.90 hours. The current algorithm completes the sample problems with a mean time of 14.0714.07 hours. Assume the population standard deviation for the new algorithm is 5.1155.115 hours, while the current algorithm has a population standard deviation of 5.7365.736 hours. Conduct a...
A systems analyst tests a new algorithm designed to work faster than the currently-used algorithm. Each...
A systems analyst tests a new algorithm designed to work faster than the currently-used algorithm. Each algorithm is applied to a group of 60 sample problems. The new algorithm completes the sample problems with a mean time of 22.16 hours. The current algorithm completes the sample problems with a mean time of 24.18 hours. Assume the population standard deviation for the new algorithm is 5.572 hours, while the current algorithm has a population standard deviation of 4.365 hours. Conduct a...
Match each scenario with one of the tests. (each test can be used more than once...
Match each scenario with one of the tests. (each test can be used more than once if needed). the tests are: a). Two-sample comparison means of confidence interval or significance tests b) .One-way anova c). One-sample mean confidence interval or significance test d). Match pairs confidence interval or Significance test e). No interference method needed Match the tests to these scenarios: ____ A researcher gathered data on the number of hours of sleep for German Shepherds, Poodles, and Golden Retrievers....
A market analyst wants to know if the new website (Website A) he designed is showing...
A market analyst wants to know if the new website (Website A) he designed is showing increased page view per visit than his original website (Website B). A customer is randomly sent to one of the two different websites, offering the same products. Here are the summary statistics for the page views for each website. Website 1 Wesite 2 12 8 4 12 14 3 10 4 2 5 a. State/check the conditions for the appropriate hypothesis test. Be sure...
Describe three different respiratory systems that are designed to work in air, in soil, or water...
Describe three different respiratory systems that are designed to work in air, in soil, or water environments. Include in your descriptions the limitations and advantages of these three different respiratory system designs.
We Bring the Rain Irrigation Company is currently growing much faster than the economy. Expected growth...
We Bring the Rain Irrigation Company is currently growing much faster than the economy. Expected growth of the company is 16% for the next 4 years; then it is expected to settle down to a constant 3% growth rate thereafter. The dividend last year was $3.20. Investors' required return on stocks of similar risk is 8%. If you already own 500 shares of We Bring the Rain, what should you do based on a comparison between your calculated intrinsic value...
Mark Huang is single, graduated from college in 2015 and began work as a systems analyst...
Mark Huang is single, graduated from college in 2015 and began work as a systems analyst in July of that year. He is preparing to file his income tax return for 2015 and has collected the financial information shown below for the calendar year. Scholarship used to pay tuition $5750 Scholarship used to pay room and board $1850 Salary $30250 Interest income $185 Itemized deductions $3000 Income taxes withheld $2600 a. Prepare marks 2015 tax return, using a $6,300 standard...
A market analyst wants to know if the new website he designed is showing increased page...
A market analyst wants to know if the new website he designed is showing increased page views per visit. A customer is randomly sent to one of two different​ websites, offering the same​ products, but with different designs. Assume that the data come from a distribution that is Normally distributed. The data is shown in the table to the right. Complete parts a through c below. Website 1 Website 2 n 80 95 ybar 6.5 6.3 s 4.9 5.4 Calculate...
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT