Find the variance from the following sample.(Please round your answers to two decimalplaces, ex: 1.23)++|91 |++X: 41 57 60 68 76 8889

Here we have given the data, Using this data we have to find the sample variance. Number of…

Answered: Find the variance from the following…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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Question #1 please
This histogram shows the heights of 20 students in a statistics class. Explain why it is not appropriate to find summary statistics for this distribution. Frequency 4- 3- 2- 1- T 0+ 60 65 70 75 Height (Inches) Choose the correct answer below. OA. Since there appear to be two modes, this data probably represents men and women and should be split into those two groups before finding any summary statistics. OB. The number of data values is too small for summary statistics to be meaningful. OC. Since the data appear to be bimodal, no other measures of center or spread can be calculated. OD. Since the distribution is not symmetric, summary statistics would be meaningless.
The heights, in inches, of the four members of a barbershop quartet of singers are listed below. 72,68,67,73 Find the population variance for this data set. Round to one decimal place if necessary.
Use the coefficient of variation to determine whether coffee prices or gasoline prices were more stable in 2015. Use the population standard and population mean of each set of data. What is the coefficient of variation for the price of a pound of coffee and a pound of gasoline?
A research company surveyed 1024 people who routinely fly for business travel purposes and found that 384 of them were generally satisfied with the flights they took. Find the standard error for the sample proportion of people who routinely fly for business travel purposes and are generally satisfied with the flights they take. Enter your answer as a decimal rounded to three decimal places.
State whether one would expect the data set described below to be normally distributed. Explain why or why not. The genders of 1,000 randomly selected adults
Help with #14 please
Nicole has a popular blog about cooking and nutrition and regularly posts articles and videos. She has collected data about the length of time that viewers spent watching two of her recent videos. For each video, she recorded the amount of time (in minutes) that each of 102 viewers spent watching it. The histograms below show the distributions of the two data sets. Each histogram shows time (in minutes) on the horizontal axis and the number of viewers on the vertical axis. The means and standard deviations for the data sets are also given. Video 1 Video 2 25- 25- 20- 20- 15- 15- 10- 10- 5- 5- 0- 19.5 24.5 29.5 34.5 39.5 44.5 49.5 54.5 59.5 64.5 69.5 19.5 24.5 29.5 34.5 39.5 44.5 49.5 54.5 59.5 64.5 69.5 Video 1 mean: 52.05 minutes Video 2 mean: 44.25 minutes Video 1 standard deviation: 12.54 minutes Video 2 standard deviation: 8.16 minutes Nicole wants to use the Empirical Rule to make some approximations about both data sets. Unfortunately, it is appropriate to use the Empirical Rule…
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The first picture is the question and the second is the ones that I need help with. Thanks
please answer 1 and 2
Use R to determine whether the mean population by census tract in 2016 is higher than the mean population by census tract in 2012. We also know that in each year, the number of residents by census tract in the State of Maryland follows a normal distribution, and the variance in the number of residents within the State of Maryland is the same for different years. POP2012: 3166, 2210, 3784, 2472, 3157, 4046, 4536, 4084, 7612, 3536, 3187, 2696, 4003, 3889, 2319, 2559, 3051, 4871, 4052, 6767, 6243, 6637, 4066, 3212, 3586, 4835, 2679, 2893, 8868, 4989, 5407, 4703, 4111, 3549, 4974, 3153, 3972, 1920, 2039, 1493, 5510, 4730, 6220, 3478, 5012, 5026, 4350, 3788, 2601, 3492, 1515, 4231, 4344, 4094, 4075, 3210, 4576, 3663, 4388, 4402, 2969, 3418, 3583, 3793, 2284, 3251, 4026, 2714, 5506, 3730, 3913, 3853, 5914, 6073, 3569, 3022, 4801, 5119, 2710, 6259, 3859, 2912, 3611, 3437, 2149, 2414, 3858, 3888, 5878, 1678, 6040, 3779, 2225, 3248, 2039, 2459, 4316, 3712, 4916, 3331, 5079, 2047, 3249, 3579,…

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Find the variance from the following sample. (Please round your answers to two decimal places, ex: 1.23) +