A data set lists weights (Ib) of plastic discarded by households. The highest weight is 5.66 Ib, the mean of all of theweights is x= 2.173 lb, and the standard deviation of the weights is s= 1.255 lb.a. What is the difference between the weight of 5.66 lb and the mean of the weights?b. How many standard deviations is that [the difference found in part (a)]?c. Convert the weight of 5.66 lb to a z score.d. If we consider weights that convert to z scores between - 2 and 2 to be neither significantly low nor significantlyhigh, is the weight of 5.66 Ib significant?.....a. The difference isIb.

Measure of central tendency measures the central or average value of a dataset. Measured of…

Answered: A data set lists weights (Ib) of…

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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Answer this question. Part (a).
As a chemical engineer working for a tire manufacturer, you collect the following data in order to test the performance of tires. Plot the data and calculate the mean and standard deviation. Kilometers with Acceptable (Reliable) Frequency Wear 30,000 15 35,000 20 40,000 34 45,000 32 50,000 22 55,000 16
Identify the level of measurement of the data , and explain what is wrong with the given calculation.In a set of data , blood lead levels are represented as 1 for low , 2 for medium , and 3 for high . The average ( mean ) of the 642 blood lead levels is 1.3
Both sets of value have an average of 13. Is set A's standard deviation similar, larger, or about the same as set B's? set A: 1 2 3 23 24 25 ser B: 9 10 11 14 16 18
For a data set of the pulse rates for a sample of adult females, the lowest pulse rate is 39 beats per minute, the mean of the listed pulse rates is x = 78.0 beats per minute, and their standard deviation is s = 13.1 beats per minute. %3D a. What is the difference between the pulse rate of 39 beats per minute and the mean pulse rate of the females? b. How many standard deviations is that [the difference found in part (a)]? c. Convert the pulse rate of 39 beats per minutes to a z score. d. If we consider pulse rates that convert to z scores between - 2 and 2 to be neither significantly low nor significantly high, is the pulse rate of 39 beats per minute significant? a. The difference is beats per minute. (Type an integer or a decimal. Do not round.)
Please answer a and b
For the following data: X-11.2.2. 3,3, 3, 4,4, 4,4, 5. 5. 5, 6,6, 6, 7, 7. 8 91 Find: A) Arithmetic mean, mode, median, and standard deviation. B) plot the histogram or ogive
A scale is known to be "low-calibrated" in that it measures an aluminum bar to be 4 grams lower than the actual weight. If ????μold is the mean of all possible measurements of the bar using the old calibration, and ????μnew is the mean of all possible measurements of the bar using a re-calibrated scale. It is desired that ????−????=4μnew−μold=4. Consider the test ?0:????−????=4H0:μnew−μold=4 vs. ?0:????−????≠4H0:μnew−μold≠4 Sample after calibration: mean is 95.8 , SD is 4.9 and sample size is 10 Sample before calibration: mean is 89.352 , SD is 4.2 and sample size is 62 We do not know population standard deviations. What is the p-value? (Hint: best to use software, or else the Desmos Calculator for the 2 sample T and Z test)
The following table gives the marks of a sample of students in Statistics. Marks No. of Students 40 to less than 50 50 to less than 60 12 60 to less than 70 22 70 to less than 80 34 80 to less than 90 39 90 to less than 100 19 The mean is: Select one: 71.75 74.25 75.98 76.27
A population of N=5 scores has a mean of μ=8. If one score with a value of X=4 is removed from the population, what is the value for the new mean? a. μ=9 b. μ=10 c. μ=8 d. μ=7
Given the following mean and standard deviation, find the z-score for each individual score. Find the difference between the data value and the mean then divide by the standard deviation. X = 10 a. X= 8 s = 2 Z = %3D b. X= 38 X = 40 s = 5 Z = С. X%3D94 X = 100 s = 10 z = d. X= 65 X = 50 s = 10 Z = %3D e. X= 30 X = 25 s = 5 Z =
X is a point estimator of: Select one: a. Population mean b. Sample mean c. Sample variance d. Population variance

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