What is the slope of the least-squares regression line for these data? Carry your intermediate computationsround your answer to at least two decimal places. (If necessary, consult a list of formulas.)0 An advertising firm wishes to demonstrate to its clients the effectiveness of the advertising ca Español it hbivariate data on twelve recent campaigns, including the cost of each campaign (denoted by X, in millionspercentage increase in sales (denoted by y) following the campaign, were presented by the firm. A scatter1. Also given is the product of the campaign cost and the percentage increase in sales for each of the twelwritten in the column labelled "XY", may aid in calculations.)Campaign cost,X(in millions ofdollars)3.302.352.073.972.261.273.103.031.631.613.533.92Send data to calculatorIncrease in sales,y(percent)6.556.626.706.806.546.386.656.926.666.206.767.05xy21.61515.55713.86926.99614.78048.102620.61520.967610.85589.98223.862827.636Increase in sales(percent)Figure 17.2+7+6.8-6.66.4-6.2.Xx1.5 2 2.5Campaign cos(in millions of doll3

The data is given here.The random variable is the campaign cost.The random variable is the…

Answered: Campaign cost, X (in millions of…

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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Symbol Company Price ($) Yield AT&T 33.59 5.48% VZ Verizon 46.78 4.70% CVX Chevron 112.18 3.82% MCD McDonald's 93.70 3.63% PFE Pfizer 31.15 3.60% GE General Electric 25.27 3.48% MRK Merck 56.79 3.17% САТ Caterpillar 91.53 3.06% Хом ExxonMobil 92.45 2.99% ко Соса-Cola 42.22 2.89% If you selected two of these stocks at random, what is the probability that both the stocks in your selection had yields of 3.25% or more? (Enter your probability as a fraction.) Enter a fraction, integer, or exact decimal. Do not approximate.
Gas price per gallon ($) City Price of a dozen eggs ($) Orlando 2.67 0.91 Chicago 2.74 0.96 Los Angeles 2.8 1.38 Minneapolis 2.87 1.4 Tucson 2.9 1.44 Portland 3.09 1.72 Kansas City 3.12 1.76 Pittsburgh 3.37 1.81 Philadelphia 3.4 1.88 Seattle 3.72 1.91
What is the percentage of deaths that occurred in 2011?
Suppose you invest in a piece of art that increases in value by 40% in the first year, 20% in the second year and 60% in the third year. 1. Calculate the arthmetic mean of the return. 2. Calculate the geometric mean of the return. 3. Explain the difference between what you got in the previous two questions.
12.6 % are age 65 and over. Approximately what percent of the population are working age adults. (Above age 17 to 65)? (Round answer to to one decimal place )
Customer Day Mon Browser Time (min) Pages Viewed Amount Spent ($) 1 Chrome 12.0 4 54.52 2 Wed Other 19.5 94.90 3 Mon Chrome 8.5 4 26.68 4 Tue Firefox 11.4 2 44.73 Chrome Firefox Wed 11.3 4 66.27 Sat 10.5 67.80 7 Sun Chrome 11.4 36.04 8 Fri Firefox 4.3 55.96 9 Wed Firefox 12.7 3 70.94 10 Tue Chrome 24.7 7 68.73 11 Sat Other 13.3 6. 54.04 12 Sun Firefox 14.3 48.05 13 Sun Other 11.7 7 64.16 14 Mon Firefox 24.4 10 158.51 15 Fri Chrome 8.4 3 84.12 16 Thu Chrome 9.6 4 59.20 17 Thu Chrome 23.3 7 91.62 18 Mon Chrome 14.0 126.40 19 Fri Other 5.6 4 68.45 20 Wed Chrome 15.1 5 32.69 21 Sat Firefox 16.3 5 78.58 22 Tue Chrome 10.2 6. 74.43 23 Sun Chrome 8.0 3 32.73 24 Tue Firefox 8.0 2 48.66 25 Fri Firefox 9.6 3 54.66 26 Wed Chrome 11.0 40.54 27 Sat Chrome 16.9 5 34.69 28 Sat Firefox 6.0 4 27.91 29 Fri Firefox 32.9 10 155.30 30 Mon Other 11.8 9 120.25 31 Thu Chrome 7.1 41.20 32 Fri Firefox 18.0 8 134.40 33 Sun Chrome 11.8 37.17 34 Fri Chrome 9.1 3 52.09 71.81 59.99 35 Tue Chrome 7.8 5 36 Mon Firefox…
Relative Girls Frequency 0.0625 1 0.205 2 0.375 0.250 4 0.0625 1. Convert the relative frequencies to percentages 2. What percentage of 4 births have at least 1 girls? 3. Define the complementary event. Use the correct notation. 4. What is the percentage of births accounted for by the complementary event?
An investor is looking at past trends for three plans comparing dividends paid per share. She collects sample data from each plan to compare the average dividends paid per share. Let ? = 0.05. Plan 1 Plan 2 Plan 3 1.28 1.00 0.35 1.55 1.19 1.15 1.86 1.25 0.15 1.95 3.17 1.00 0.75 1.46 0.30 2.68 0.60 0.61 2.03 1.31 1.04 Groups Count Average Variance Plan 1 7 1.728571 0.375514 Plan 2 7 1.425714 0.667762 Plan 3 7 0.657143 0.164724 Source of Variation Sum of Squares df Mean Squares F P F crit Between Groups 4.2709 2 2.1354 5.3033 0.0155 3.5546 Within Groups 7.2480 18 0.4027 Total 11.5189 20 (a) What is the next step in the one-way ANOVA? There is not enough information, so collect more data.Stop, the results were not significant. The Tukey-Kramer post hoc test is not needed. Stop, the results were significant. The Tukey-Kramer post hoc test is not needed.Continue to the Tukey-Kramer post hoc test, as the results were…
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your car is more crowded than you think. table 5.8 reports results from a 1969 personal transportation survey on "home-to-work" trips in metropolitan areas. The survey stated that the average car occupancy was 1.4 people. check that calculation.

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Campaign cost, X (in millions of dollars) 3.30 2.35 2.07 3.97 2.26 1.27 3.10 3.03 1.63 1.61 3.53 3.92 Increase in sales, y (percent) 6.55 6.62 6.70 6.80 6.54 6.38 6.65 6.92 6.66 6.20 6.76 7.05 xy 21.615 15.557 13.869 26.996 14.7804 8.1026 20.615 20.9676 10.8558 9.982 23.8628 27.636