State the probability that neither of these confidence intervals will contain u. (l mark) It is also proposed that, from a third random sample of 50 tubs, a 99% confidence interval for be constructed and that, from a fourth independent, random sample of 50 tubs, a 90% confidence interval for be constructed.

I calculated the weighted average for the areas with . weighted.mean(a, n) Is there a way in R to also calculate the 95% confidence intervals of the weighted mean, based on the information I have? I looked into pROC, but as far as I understood it, there you need the raw data for each ROC curve (which I don't have). I would be very thankful for ... Weighted Mean. Showing top 8 worksheets in the category - Weighted Mean. Some of the worksheets displayed are Weighted averages work, Weighted means and means as weighted sums, Weighted averages tutorial, Test bob faye cheryl rosa test 1 85 78 70 91 test 2 89 75, Area weighted average calculation work, Finding the mean median mode practice problems, Lesson 13 mean median mode and range, Work ...

Confidence-weighted testing: A descriptive study of Japanese nursing students Article in Nursing and Health Sciences 15(4) · July 2013 with 34 Reads How we measure 'reads' A hand-scoring system for a three-level confidence-marking scheme for short answer and multiple-choice tests is described. The scoring system is for a test where the student is asked to indicate for each answer whether the probability of his being correct is more than 1/2 (sure), 1/2 (neutral), or less than 1/2 (guess). Amazon.com: KEEPTOP Adult Weighted Blanket 15 lbs Queen Size (60" x 80") - Heavy Blanket for Adults 150-300 lbs - Upgrade Version 300TC Premium Cotton, Double Sewing Edge - Helps to Quality Sleep: Home & Kitchen

1. using Excel, estimate the weighted average cost of capital, listing the necessary inputs at the top of your sheet, calculate Boeing’s cost of equity and beta. 2. use the capital asset pricing model to estimate Boeing’s cost of equity, assuming 3.5% risk-free rate and 5.5% market risk premium. Link to a separate sheet with beta estimation. This comes out to be = 77.85, which is higher than the un-weighted average i.e. 75. So, in this case the Economics marks have contributed more to the final result than any other element. How to Calculate Weighted average in Excel? After understanding the concept of Weighted average in Excel, you must be thinking how to calculate it in Excel. Jan 19, 2018 · This video demonstrates how to perform a weighted average calculation in Excel using the SUMPRODUCT function. The scenario looks at students who have taken five exams over a year where each exam ...