iamabouttofail

15.11.2019 • 

Mathematics

In a two-month survey of shoppers, each shopper bought one of two brands of detergent, x or y, in the first month and again bought one of these brands in the second month. in the survey, 90 percent of the shoppers who bought brand x in the first month bought brand x again in the second month, while 60 percent of the shoppers who bought brand y in the first month bought brand y again in the second month. what percent of the shoppers bought brand y in the second month?

Ответ:

200002977

02.06.2020

Mathematics

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0.512 ; - 0.538

Step-by-step explanation:

Using the standard linear regression relation :

y = bx + c

b slope ; c = intercept ; y = dependent ; x = independent variable.

For finalist between 2004 - 2014 ;

y = 0.024x - 0.328

x = 35

y = 0.024(35) - 0.328

y = 0.512

For finalist between 1990 - 2014 ; with 14 winners ; change in daily circulation :

y = -0.015x - 0.328

x = 14.

y = -0.015(14) - 0.328

y = - 0.538

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