The histograms below display the ages of all American males who have been given the namesWilliam and Zachary in the last 50 years. Assume that the two graphs have the same vertical scale.William (Distribution W)Zachary (Distribution Z)15 2025 30Age354045 50 0515 20253040 4550AgeWhich group has the smaller standard deviation: males named William or males named Zachary?(A) Distribution W has the smaller standard deviation because the people are almost evenlydistributed across the age range.(B) Distribution W has the smaller standard deviation because it shows a weak, positive association.(C) Distribution Z has the smaller standard deviation because the distribution is slightly skewed tothe left.(D) Distribution Z has the smaller standard deviation because there are more ages clustered near thecenter of the distribution.(E) The two distributions have the same standard deviation because the range of ages is the same.

Approach to solving the question:Identify the distribution of ages in each histogram.Assess the…

Answered: The histograms below display the ages…

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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Consider the following plot. 50 40 10 10 15 25 Estimate the mean of the distribution. 20 30 20 Frequency
14. On a textile process the weight of roll is given on pounds. For the following data construct a Histogram. According to the graph obtained, explain if the histogram data shown a normal distribution? 70 66 70 72 71 73 69 70 68 72 70 72 71 69 73 70 74 70 71 67 71 68 70 69 69
The durations (minutes) of 26 electric power outages in the community of Sonando Heights over the past five years are shown below. 36 49 24 66 25 12 55 12 50 4 14 43 42 102 33 20 14 50 22 2 18 26 89 26 14 20 Click here for the Excel Data File (a) Find the mean, median, and mode. (Round your answers to 2 decimal places.) (b) Are the mean and median about the same? (c) Is the mode a good measure of center for this data set? multiple choice 1 Yes No (d) Is the distribution skewed? multiple choice 2 Yes, the distribution is skewed left. Yes, the distribution is skewed right. No, the distribution is symmetric.
For part B the first drop down says yes/no and the second drop down says greater than/less than
The weights of a certain dog breed are approximately normally distributed with a mean of u = 45 pounds, and a standard deviation of a = 7 pounds. Fill in the indicated boxes. μ-36 μ-20 P-O F Z = A dog of this breed weighs 53 pounds. What is the dog's z-score? Round your answer to the nearest hundredth as needed. μ=45 σ = 7 pounds μ+O μ+20 μ+30 A dog has a z-score of -0.23. What is the dog's weight? Round your anver to the nearest tenth as needed. pounds A dog has a z-score of 0.23. What is the dog's weight? Round your answer to the nearest tenth as needed.
The plot below displays the distribution of the percent of days spent sleeping by male fruit flies. Which of the following are valid estimates of the mean and median of this distribution? Male Fruit Flies 35 30 25 20 Percent 15 10 5 0 T T T T 20 40 60 Percent of day spent sleeping a. mean = 24, median = 18 b. mean = 18, median = 24 c. mean = 18, median = 18 d. mean = 20, median = 40 e. mean = 25, median = 35 80
Consider the following frequency distribution: Score Freq 7 18 6 77 5 20 4 7 3 3 2 1 1 3 What is the percentile rank for a score of 5? What is the score corresponding to the 80th percentile?
The figure shows population density (people per square mile) for all states of a certain country. The states are divided into four geographical regions: A, B, C, and D. Answer the questions below. D- 0 100 200 300 400 500 600 700 800 900 1000 1100 People per Square Mile Why is it best to compare medians and interquartile ranges for these data, rather than comparing means and standard deviations? OA. These data are fairly symmetric and do not have outliers, and the median and interquartile range provide more reliable information in these circumstances. B. Some of these data have outliers and/or are skewed, and the median and interquartile range amplify the effects of outliers and skewness. OC. Some of these data have outliers and/or are skewed, and the median and interquartile range are resistant to outliers. OD. Some of these data have vastly different centers, and the median and interquartile range provide more reliable information in these circumstances. List the approximate median…
2. Which of the following graphs represent a normal distribution? Chart A 20 15 10 (1, 5.4) (5.4, 9.8) (9.8, 14.2) (14.2, 18.6) (18.6, 23] (23, 27.4] Chart B 19 0.5 Category 1 Category 2 Category 4 Chart C 20 [1, 6) 16. 111 (11, 16] (16, 21] (21, 26] Chart D 25 15 10 (1,7.4) (74, 13.8) (13.8, 20.2) (20.2, 26.6]
: Which one of the following statements is True? The units of the Variance are the same as the original data. The Mean can be found from a Box Plot. Relative Frequency equals Frequency multiplied by Total Frequency. An Ogive chart increases in height from left to right. For a unimodal mound shaped distribution that is Skewed Left the Mean is greater than the Median.
The following table shows the distribution of scores on a final elementary statistics examination for a large section of students. 0.12 The cumulative relative frequency for the class 60-70 (i.e. what percentage of students scored 70 or lower) is 0.06 0.57 Classes for Exam Scores 90 and over 80-90 70 - 80 60-70 50 - 60 40 - 50 Under 40 0.43 Number of Students 5 12 40 18 13 6 6
A random sample of 30 male college students was selected, and their heights were measured. The heights (in inches) are given below. 69 72 73 72 66 69 70 74 72 66 67 72 73 68 72 72 68 68 70 69 71 66 74 74 69 66 66 74 70 69 (a) Complete the frequency distribution for the data. Make sure to enter your answers for the relative frequency as decimals, rounded to the nearest tenth. Height Frequency Relative Frequency 66 67 68 69 70 71 72 73 74 NIS

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