A sample of college students was asked how much they spent monthly on cell phone plans. Approximate the standard deviation for the cost.Monthly cell phone plan cost (5)Number of students10.00-19.99820.00-29.991930.00-39.992740.00-49.991450.00-59.996The sample standard deviation for the cost is $(Round to the nearest cent as needed.)

Given Information: The given data is, Monthly call phone plan cost($) Number of students…

Answered: A sample of college students was asked…

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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Determine whether the following graph can represent a variable with a nomal distribution. Explain your reasoning. If the graph appears to represent a normal distribution, estimate the mean and standard deviation. 10 15 20 25 30 Could the graph represent a variable with a normal distribution? Explain your reasoning. Select the correct choice below and, if necessary, fill in the answer boxes within your choice. O A. No, because the graph crosses the x-axis. O B. No, because the graph is skewed nght. O C. No, because the graph is skewed left. O D. Yes, the graph fulfills the properties of the normal distribution. The mean is approximately and the standard deviation is about- (Type whole numbers.) Clear all Final chec Help me solve this View an example Get more help -
The distribution of the number of hours that a random sample of people spend doing chores per week is shown in the pie chart. Use 32 as the midpoint for "30+ hours." Make a frequency distribution for the data. Then use the table to estimate the sample mean and the sample standard deviation of the data set. W Click the icon to view the pie chart. ..... 5-9 12 10-14 23 15-19 16 20-24 18 25-29 12 30+ 4 Find an approximation for the sample mean. x= 16.6 (Type an integer or decimal rounded to the nearest tenth as needed.) Find an approximation for the sample standard deviation. s= (Type an integer or decimal rounded to the nearest tenth as needed.)
A distribution has mean 100 and standard deviation 3. What is the largest percent of the data that is guaranteed to be between 40 and 160 93.75 96 97.44 99.75 99.99
Find the variance and the standard deviation (correct to two decimal places). 78, 89, 94, 94, 95 variance standard deviation
Recently, a random sample of 25-34 year olds was asked, "How much do you currently have in savings, not including retirement savings?" The data in the table represent the responses to the survey. Approximate the mean and standard deviation amount of savings. EEB Click the icon to view the frequency distribution for the amount of savings Frequency distribution of amount of savings The sample mean amount of savings is $ (Round to the nearest dollar as needed ) Savings $0-$199 Frequency 344 The sample standard deviation is $ $200-$399 93 (Round to the nearest dollar as needed.) 65 $400-$599 $600-$799 24 $800-$999 10 $1000-$1199 $1200-$1399 1 Print Done %23 e here to search lyi
100 92 77.5 76.5 76.5 92 90 74 80 74 89 73.5 88.5 72 71 87.5 69 87 66 86 87 86 86 85 81 781. Compute for the mean and the standard deviation. 2. What is the proportion above 87.5? 3. What is the proportion between 80 and 87? 4. What is the CEEB score of 74? 5. What is the Deviation IQ for a T of 37.5? 5______ Classify the student/s performance who got a score of 74? a) Poor b) below Ave c) Average d) Above Average e) Superior 5. What is the score equivalent to 96 percentile? _____ 6. What is D5? 7. What is D8? 8. Is the data set a normal distribution? Justify
K A data set lists weights (lb) of plastic discarded by households. The highest weight is 5.26 lb, the mean of all of the weights is x=2.312 lb, and the standard deviation of the weights is s = 1.118 lb. a. What is the difference between the weight of 5.26 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 5.26 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 significantly high, is the weight of 5.26 lb significant? a. The difference islb. (Type an integer or a decimal. Do not round.) View an example Get more help. ... Clear all Check answer Incor

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