IV. This question contains data on the profits of movies, in millions of dollars.from dramas and comedies that had their premieres over the summer. As a forproducer you need to decide what kind of movies would you prefer to produce forsummer premieres.a. Compute the mean, standard deviation and variance of profits fordramas and comedies.WeekMeanStandard DeviationVarianceDramasComediesb. Test whether mean profits for those two types of movies are differentusing α=0.05.c. Test whether comedies bring more profits using a = 0.05.Dramas Comedies333936443941363530303735383637443233323737354139304140293444

Let us consider dramas as sample-I and Comedies as sample-II

Answered: a. Compute the mean, standard deviation…

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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Print-O-Matic printing company spends specific amounts on fixed costs every month. The costs of those fixed costs are in table #3.2.13. Table #3.2.13: Fixed Costs for Print-O-Matic Printing Company Monthly charges Monthly cost ($) Bank charges 482 Cleaning 2208 Computer expensive 2471 Lease payments 2656 Postage 2117 Uniforms 2600 Find the mean and median. Find the range. Find the variance and standard deviation.
4) The table shows, for the years 1997–2012, the mean hourly wage for residents of the town of Pity Me and the mean weekly rent paid by the residents. Mean hourly wage (dollars) Mean hour. Mean weekly rent (dollars) Mean weekly rent (dollars) Year Year (dollar 116 1997 57 10.38 2005 28.99 59 113 1998 10.89 2006 28.63 2007 1999 62 11.96 112 36.75 14.55 2000 63 12.46 2008 86 17.90 2001 86 17.72 2009 90 2002 2010 119 28.07 90 14.67 131 35.24 2003 2011 17.97 100 122 2004 2012 22.23 31.87 115 Find the least squares line that uses mean hourly wage to predict mean weekly rent. Round values to the nearest ten-thousandth. Include a scatter plot with the regression lino
What is the equation for the median median line?
Two companies produce widgets of varying quality. An important measure of quality is the number of days the widgets can go before they need to be replaced. Do the following data provide evidence that the quality of widgets from the two companies differ? Round the p-value to three decimal places. Do not assume equal variances. Widget Life in Days from Company 1 13.0 13.2 43.2 40.7 55.0 57.3 43.8 49.9 31.7 Widget Life in Days from Company 2 57.1 57.7 59.1 58.7 51.6 57.9
1. Commute the range for baseball coaches yearly salaries. 2. Compute the mean yearly salary. 4. Compute the variance and the standard deviation for the yearly salary. Show you calculation. 4. Compute the coefficient of the variation.
Given the fuel economy data shown in the frequency Distribution at the right, what are the approximate Mean, variance and standard deviation of the populationi 58 60 62 64 66 68 7O 72 74 Height (in inches) Illustrated? Fuel Economy The city mileage (in miles per gallon) for 24 family sedans Mileage (in miles per gallon) Frequency 22-27 16 28-33 34-39 40-45 3 46-51
The systolic blood pressure of individuals is thought to be related to both age and weight. For a random sample of 11 men, the following data were obtained. Systolic Blood pressue X1 Age (years) X2 Weight (pounds) Xз 132 52 173 143 59 184 153 67 194 162 73 211 154 64 196 168 74 220 137 54 188 149 61 188 159 65 207 128 46 167 166 72 217 (a) Generate summary statistics, including the mean and standard deviation of each variable. Compute the coefficient of variation for each variable. (Use 2 decimal places.) х CV X1 X2 Хз
Actuaries use various parameters when evaluating the cost of a life insurance policy. The variance of the life spans of a population is one of the parameters used for the evaluation. Each year, the actuaries at a particular insurance company randomly sample 30 people who died during the year (with the samples chosen independently from year to year) to see whether the variance of life spans has changed. The life span data from this year and from last year are summarized below. Current Last Year Year x1 = 75.8 | x,= 76.2 si= 47.61 s3= = 92.16 (The first row gives the sample means and the second row gives the sample variances.) Assume that life spans are approximately normally distributed for each of the populations of people who died this year and people who died last year. Can we conclude, at the 0.05 significance level, that the variance of the life span for the current year, of, differs from the variance of the life span for last year, o,? Perform a two-tailed test. Then complete the…
What is the slope of the median median line for the dataset in this table?
Two companies produce widgets of varying quality. An important measure of quality is the number of days the widgets can go before they need to be replaced. Do the following data provide evidence that the quality of widgets from the two companies differ? Round the p-value to three decimal places. Do not assume equal variances. Widget Life in Days from Company 1 Widget Life in Days from Company 2 12.0 52.2 14.0 45.8 48.4 44.6 47.0 57.5 50.4 44.2 57.4 50.8 30.8 43.0 30.0
Are there any mild outliers in the college students data? Show all work. Construct and label a modified boxplot for the college students data.
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