17. Thinking, Inquiry, Problem Solving Flooring materials being producedat a lumber mill have an average thickness of 7.9 mm, with a standarddeviation of 0.4 mm.(a) What(b) If you wanted 95% of the materials to fall within the range 7.7 mmand 8.15 mm, what mean and standard deviation would be required?rangedo about 68% of the flooring materials fall within?from vour class

Empirical rules:1) P(μ-σ<X<μ+σ)=68%2) P(μ-2σ<X<μ+2σ)=95%3) P(μ-3σ<X<μ+3σ)=99.7%

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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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Calculus The height of 700 boys are found to approximately follow such a distribution, with a mean height of 148 cm and a standard deviation of 19 cm. Find the number of boys with heights between 129 cm and 167 cm.
Cereals sodium values have a mean of 167 and a standard deviation of 77.3. Find the z-score for the cereal that has a sodium value of 0. How would you interpret this z-score?
Normal Distribution The following table shows the temperature at noon on February 21, 2018 in 5 different Canadian cities. Calculate the z-score for each temperature measurement, and find which city was experiencing the most "exceptional" (out-of-ordinary) temperature on that day. City Temp. on February 21 Average Temp. in February Std. Deviation z-score Montreal 3.4 -7.7 2.7 Toronto 3.2 -4.5 2.3 Vancouver -3.3 4.9 1.5 Regina -27 -11.7 4.2 Halifax 5.4 -5.2 2 The city with the most "exceptional" (out-of-ordinary) temperature on that day is choose: -Montreal -Toronto -Vancouver -Regina -Halifax
The coefficient of variation CV describes the standard deviation as a percent of the mean. Because it has no units, you can use the coefficient of variation to compare data with different units. Find the coefficient of variation for each sample data set. What can you conclude? Standard deviation CV = • 100% Mean E Click the icon to view the data sets. Data Table C/heights = 5.0 % (Round to the nearest tenth as needed.) Heights Weights CVweights =% (Round to the nearest tenth as needed.) 68 181 77 169 72 167 72 207 71 177 70 175 78 185 69 186 67 221 70 216 67 209 73 206
Directions: Determine the parameter to be tested in each situation by writing your answer on a separate sheet of paper. Translate it into symbols. 2. A newspaper article stated that students in the country take an average of 4 years to finish their undergraduate degrees. Suppose that you believe the mean time is longer, you conducted survey on 49 students. The result obtained a sample mean of 5 with a sample standard deviation of 1.2.
You review your data from a population A and population B. The mean and standard deviation are noted as N(mean, standard deviation). NA(400,10) and NB(300,25). 95 percent of the observations for population A exceed a value of___________?95 percent of the observations for population B are less than a value of _____________?
The coefficient of variation CV describes the standard deviation as a percent of the mean. Because it has no units, you can use the coefficient of variation to compare data with different units. Find the coefficient of variation for each sample data set. What can you conclude? Heights Weights77 19379 20569 22379 22077 22572 17965 20173 21071 19670 20475 21379 209 CV heights= % CV weights = % what can you conclude?
A population has a mean μ = 83 and a standard deviation = 29. Find the mean and standard deviation of a sampling distribution of sample means with sample size n = 252. H=(Simplify your answer.) Example Get more help. Clear all Check answer
z Scores LeBron James, one of the most successful basketball players of all time, has a height of 6 feet 8 inches, or 203 cm. Based on statistics from Data Set 1 “Body Data” in Appendix B, his height converts to the z score of 4.07. How many standard deviations is his height above the mean?
supposed the accompying data ages of patients from a certain hospital. find the standard deviation and variance. ages ranges f 6-14 315-23 524-32 2033- 41 242-50 351-59 260-68 1
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