Question 1MO21. The brightness of a television picture tube can be evaluated by measuring the amount of current required to achieve aparticular brightness level. The following data (required current) were collected from a sample: 343.8, 369.3, 380.6, 339, 369.7.Compute a 90% confidence interval on the brightness of the television tubes that has 90% of the values. Input the value the upperlimit of the Tolerance Interval in the blank provided up to 2 decimal places. Provide all the necessary solutions in the submission forboth upper and lower limit.Upper limit of the interval is Blank 1Blank 1Add your answer

Answered: Image /qna-images/answer/2396763d-5dcd-4bc3-bd8a-5b881399f600.jpg

Answered: MO21. The brightness of a television…

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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The body temperatures of a group of healthy adults have a bell-shaped distribution with a mean of 98.39°F and a standard deviation of 0.56°F. Using the empirical rule, find each approximate percentage below. a. What is the approximate percentage healthy adults with body temperatures within 2 standard deviations of the mean, or between 97.27°F and 99.51°F? b. What is the approximate percentage of healthy adults with body temperatures between 96.71°F and 100.07°F? a. Approximately % of healthy adults in this group have body temperatures within 2 standard deviations of the mean, or between 97.27°F and 99.51°F. (Type an integer or a decimal. Do not round.) b. Approximately% of healthy adults in this group have body temperatures between 96.71°F and 100.07°F. (Type an integer or a decimal. Do not round.)
Suppose 140 geology students measure the mass of an ore sample. Due to human error and limitations in the reliability of the balance, not all the readings are equal. The results are found to closely approximate a normal curve, with mean 85 g and standard deviation 2 g. Use the symmetry of the normal curve and the empirical rule as needed to estimate the number of students reporting readings between 81 g and 89 g. The number of students reporting readings between 81 g and 89 g is (Round to the nearest whole number as needed.)
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MO21. A particular brand of diet margarine was analyzed to determine the level of polyunsaturated fatty acid (in percentages). A sample of six packages resulted in the following data: 12.8, 14.3, 11.1, 16, 13.5, 12. Calculate the 99% confidence interval on the population mean but input only the value of the upper limit of the Cl in the blank provided up to 2 decimal places. Provide all the necessary solutions in the submission for both upper and lower limit. 10 Upper limit of the Cl is Blank 1. Blank 1 Add your answer
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Can someone explain the formulas used in these type of questions and where each number belongs in the formula The average size of a farm in Texas is 185 acres. The average size of a farm in Kansas is 220 acres. Assume that the data were obtained from two samples with standard deviations of 40 and 15 acres, respectively, and a sample size of 10 and 12, respectively. Can it be concluded with a=0.05 that the average size of the farms in the two states is different? Assume that the population is normally distributed.

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