Areal-estate company appraised the market value of 36 homes in lyttelton and found that the sample mean and standard deviation were $150,000 and $17,000 respectively. the real-estate company also appraised the market value of 45 homes in aranui and found that the sample mean and standard deviation were $100,000 and $12,000 respectively. calculate the 90% confidence interval estimate for the population difference in market value between the lyttelton and aranui areas .

answer:

1,500

step-by-step explanation:

mr. flanders’ class sold 47 doughnuts and   mr. rodriquez’s class sold 38 cartons of milk

step-by-step explanation:

let x be the number of doughnuts sold by mr. flanders’ class and y be the number of cartons sold by mr. rodriquez’s class.

1. together, the classes sold 85 items, then

x+y=85.

2. both classes earn earned $104.49 for their school. if doughnuts were sold for $1.35 each, then x doughnuts costed $1.35x. if cartons of milk were sold for $1.08 each, then y cartons costed $1.08y. hence,

1.35x+1.08y=104.49.

3. solve the system of two equations:

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