Question
B. Predict the number of software millionaire birthdays that will occur in a decade where the...
B. Predict the number of software millionaire birthdays that will occur in a decade where the total number of births in this country is 35 million. ( round to 2 decimal places as needed)
C. Fit a simple linear regression model relating number (y) of software millionaire birthdays in a decade to number (x) of CEO birthdays. give the least squares prediction equation. ( round to 2 decimal places as needed)
D. Predict the number of software millionaire birthdays that will occur in a decade where the total number of births in this country is 35 million
%) 11.2.19-T Question Help ! A researcher notes that, in a certain country, a disproportionate number of software millionaires were born around the year 1955. Is this a coincidence, or does birth year matter when gauging whether a software founder will be successful? The researcher investigated this question by analyzing the data shown in the accompanying table. Click the icon to view the table. a. Fit a simple linear regression model relating number (y) of software millionaire birthdays in a decade to total number (x) of births in this country. Give the least squares prediction equation. ĝ= + (O) (Round to two decimal places as needed.) © Data regarding software millionaire birthdays - X Number of Software Millionaire Birthdays Number of CEO Birthdays in a random sample of 70 companies) Decade 1920 1930 1940 1950 1960 1970 Total Births in Country (millions) 28.016 24.065 31.603 40.796 38.311 33.603 00w ovo SNN Print Done
Answers
a)
b) x = 35
c)
d) x = 35
Please hit thumps up if the answer helped youX Y XY XX YY 28.016 3 84.048 784.896 9 24.065 1 24.065 579.124 1 31.603 10 316.03 998.75 100 40.796 16 652.736 1664.31 256 38.311 8 306.488 1467.73 64 33.603 6 201.618 1129.16 36 ΣΧ = 196.394,ΣΥ = 44.0 ΣΧΥ = 1584.985,ΣΧΧ = 6623.978,ΣΥΥ = 466.0= α+ br ΣΥ *ΣΧΧ -ΣΧ* ΣΧΥ Η 44.0 και 6623.976 - 1963941584.985 • 8 -16,8986 * 6 * 6623.978 – 196.394 και 196.394 , ηΣΧΥ - ΣΧ* ΣΥ = - ηΣ Χ2 – (ΣΧ)2 6 και 1584.985-196.394 * 44.0 x 0.7403 6 * 6623.978 - 196.394 * 196.394 =-16.90 + 0.74ry = -16.90 +0.7435.0) û = 9.01X Y XY XX YY 2 3 6 4 9 2 1 2 4 1 22 10 220 484 100 35 16 560 1225 256 7 8 56 49 64 Ο 6 0 0 36 ΣΧ = 68.0,ΣΥ = 44.0 ΣΧΥ = 844.0, ΣXX = 1766.0, ΣΥΥ = 466.0= α+ br " ΣΥ * ΣXX – ΣΧ* ΣΧΥ " ηΣΧ2 – (ΣΧ)2 44.0 και 1766.0 – 68.0 * 844.0 - 3.4012 * 6 * 1766.0 – 68.0 * 68.0 , ηΣΧΥ - ΣΧ * ΣΥ ο = η Σχ2 – (ΣΧ)2 6 * 844.0 – 68.0 * 44.0 b = .. 6 και 1766.0 – 68.0 * 68.0 και = 3.40 + 0.35ry = 3.40 +0.35(35.0) y = 15.55
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