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In 2004, a sample of 250 household in NY showed that 62 paid their monthly phone bills by debit card. in 2009 a sample of 350 houshold in the same city showed that 110 paid their monthly phone bill by debit card. based on the sample data, can we conclude that there is difference between the population proportion of 2004 houshold and 2006 houshold in the same city?
a. determine the sample size are large enough.
b. conduct the appropriate hypothesis test. report with p-value, would null hypothesis be rejected?
c. calculated pooled estmated for overall.
Find and interpret the margin of error for a 95% confidence interval for the population proportion of Americans who believe in heaven.
the formulab=32a is used New England, to estimate the minimum furnace output,b, in BTU's for a modern house with a square feet of flooring. Determine the minimum furnace output for a 2100ft 2 modern house.
If the company's revenue from the sale of the shoes in 2006 was $3.0 million, what was the approximate revenue from the sale of the shoes in 2005?
two car models are tested for a difference in average gas mileage. ten cars of model a averaged 32.1 miles per gallon
The circumference of a sphere was measured to be 72000 cm with a possible error of 050000 cm. Use linear approximation to estimate the maximum error in the calculated surface area.
determine the multiple integral under given condition using spherical coordinate.let g be the three dimensional region
discuss the method used to solve an equation containing radical expressions. why is it necessary to check the solutions
Find the unique factorisation and determine which of the original statement or the negation is true - Prove the Giftbox Theorem using the method of contradiction
Explain the concept of inverse variation. Provide two examples. What is the vertical asymptote for the function y = ( x^2 - 4) / ( x - 2 )?
an automobile purchased for $24,000 is worth $2,300 after seven years. Assuming the car's value depreciated steadily from year to year, what was it worth at the end of the third year.
When a rocket is 2 kilometers high, it is moving vertically upward at a speed of 300 kilometers per hour. At that instant, how fast is the angle of elevation of the rocket increasing, as seen by an observer on the ground 5 kilometers from the laun..
things vary in life - virtually nothing except physical standards such as the speed of light we interact with is
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