Comparing means without calculationFour distributions, labeled (a), (b), (c), and (d) are represented below by their histograms. Each distribution is made of 9 measurements. Without performingany calculations, order their respective means o Hy He and PaEnter the four subscripts approprilately below.(a)(b)1234 S6 7 89 10 1l 12 13 1411 12 13 14(c)(d)123 456 7 89 10 11 12 13 146789 10 11 12 13 14ExplanationCheck2021 McGrawH E2141bymaltdrebook x360OSE YOUR SHAATHOESpect+Suppemugged. Chromebook.回国回回

Histogram is the graphical representation of the continuous frequency distribution of the data set…

Four distributions, labeled (a), (b), (c), and (d) are represented below by their histograms. Each distribution is made of 9 measurements. Without performing any calculations, order their respective means H Hy He and Ha- Enter the four subscripts appropriately below. (a) (b) 1234 567 8 9 10 11 12 13 14 U2345 6789 10 11 12 13 14 (c) (d) 123456789 10 11 12 13 14 1234 56 7 89 10 1l 12 13 14 > י-

Four distributions, labeled (a), (b), (c), and (d) are represented below by their histograms. Each distribution is made of 9 measurements. Without performing any calculations, order their respective means H Hy He and Ha- Enter the four subscripts appropriately below. (a) (b) 1234 567 8 9 10 11 12 13 14 U2345 6789 10 11 12 13 14 (c) (d) 123456789 10 11 12 13 14 1234 56 7 89 10 1l 12 13 14 > י-

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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Marks Number of Students 2 5 3 6 4 4 5 1 6 15 7 20 8 10 9 3 The teacher set a mathematics quiz and is marked out of 10. His students' marks are summarised in the table above. a) Construct an appropriate frequency table and draw a histogram to depict the data above, b) Compute the mean. c) Calculate the variance and standard deviation. d) Calculate the coefficient of variation. e) Interpret the distribution of marks s shown in the histogram.
3. Calculate the mean, median, mode, variance, and standard deviation for each of the following two groups of scores, which represent student performance on a health science test, with the highest possible score being 50. Group A 35 49 33 44 45 21 28 411 Group B 20 25 50 44 16 29 37 21 40 39 23 26 a. Which group has the greatest variability in scores? b. Which group has the highest mean score? c. How would you describe each group when comparing it to the other?
b) Find the mean and the standard deviation of the times in the following table. Because the table contains all the winning times for this race (up to year 2012), the data set is a population. Olympic Women's 400-Meter Dash Results, in Seconds, 1969-2012 52.0 51.08 49.29 48.88 48.83 48.65 48.83 48.25 49.11 49.41 49.62 49.55
Six different machines are being considered for use in manufacturing rubber seals. The machines are being compared with respect to tensile strength of the product. A random sample of four seals from each machine is used to determine whether the mean tensile strength varies from machine to machine. The following are the tensile-strength measurements in kilograms per square centimeter × 10-1: Machine 1 2 3 4 5 17.5 16.4 20.3 14.6 17.5 18.3 16.9 19.2 15.7 16.7 19.2 16.2 15.8 17.7 17.8 20.8 16.5 17.5 18.6 15.4 18.9 18.9 20.5 20.1 1. Determine SST in two decimal places. Blank 1 2. Determine SSA or SSB in two decimal places Blank 2 3. Determine SSE in two decimal places. Blank 3 4. Determine f calculated in two decimal places. Blank 4 5. Determine f table. Blank 5 6. Is there any significant difference between the machines' tensile strength readings? yes or no. Blank 6
Find the sample standard deviation for the following Grouped Frequency Data Table (GFDT). Lower Class Limit Upper Class Limit Frequency 40 44 1 45 49 8 50 54 3 55 59 4 60 64 6 65 69 11 70 74 2 75 79 9 80 84 5
Measurements for the length and width of a rectangular plastic covers for CDs are rounded to the nearest mm (so they are discrete). Let Xx denote the length and Y denote the width. The possible values of X are 129, 130, and 131 mm. The possible values of Y are 15 and 16 mm. The joint distribution is given by the following table: X=length 129 130 131 Y=width 15 0.12 0.42 0.06 16 0.08 0.28 0.04 The probability that a CD cover has width of 16 mm knowing that it has a length of 131 mm is:
A random sample of five observations from three normally distributed populations produced the following data: (You may find it useful to reference the F table.) (table is the screenshot picture) a. Calculate the grand mean. (Round intermediate calculations to at least 4 decimal places and final answer to 4 decimal places.) b. Calculate SSTR and MSTR. (Round intermediate calculations to at least 4 decimal places and final answers to 4 decimal places.) c. Calculate SSE and MSE. (Round intermediate calculations to at least 4 decimal places and final answers to 4 decimal places.) d. Specify the competing hypotheses in order to determine whether some differences exist between the population means. _H0: μA = μB = μC; HA: Not all population means are equal. _H0: μA ≤ μB ≤ μC; HA: Not all population means are equal. _H0: μA ≥ μB ≥ μC; HA: Not all population means are equal. e-1. Calculate the value of the F(df1, df2) test statistic. (Round intermediate calculations to at least 4 decimal…
The arrows can only be dragged to z scores that are accurate to 1 place after the decimal point (these values correspond to the tick marks on the horizontal axis). Select from the drop down menu to shade to the left, to the right, between or left and right of the z-score.
A random survey is collected on the number of children of different age groups who play in government parks and the information is tabulated in the frequency distribution given below: Age (years) Number of children 1 - 2 8 2 - 4 10 4 - 7 18 7 - 9 10 9 - 11 12 11 -15 6…
How long do people spend travelling to work?the answer may depend on where they live.here are the travel times in minutes for 15workers in north Carolina.chosen at random by census bureau: 5 10 10 10 10 12 15 20 20 25 30 30 40 40 60 What is the standard deviation for travel time for these 15north Carolina workers
Exploration 4. Assume that 5 students taking a statistics course having the following ages: 17 33 29 20 45 Mean a. Find the mean and population standard deviation of the data set of ages. Standard Deviation b. Assume that random samples of size n = 2 are selected with replacement. Make a list of all of the possible samples of size 2. They are selected with replacement, i.e. the same student could be chosen twice. Also, selecting the age of 17 first and 33 second is different from selecting 33 first and 17 second. You need to make a list of all the possible outcomes (there should be 25.....) Find the mean of each sample and construct a table representing the sampling distribution of the mean.
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