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A restaurant located in an office building decides to adopt a new strategy for attracting customers to the restaurant. Every week it advertises in the city newspaper. To measure how well the advertising is working, the restaurant owner recorded the weekly gross sales for the 15 weeks after the campaign began and the weekly gross sales for the 15 weeks immediately prior to the campaign. Data on weekly gross sales (in dollars) for 15 weeks before and after the program were recorded and analyzed. Below are the outputs.
Paired Samples StatisticsMean
N
Std. Deviation
Std. Error Mean
Pair 1
before
5392.13
15
398.035
102.772
after
5746.06
409.010
105.605
Estimate the instantaneous rate of change of the function
What is the present value of the cash flows? (Do not round intermediate calculations and round your final answer to 2 decimal places.
later flying against the wind, the plane travels 690 miles in 3 hours. find the speed of the plane in still air and the speed of the wind?
(a) Find the Riemann sum for f(x) = x - 4 sin 2x, 0 x 3, with six terms, taking the sample points to be right endpoints. (Give your answer correct to six decimal places.)
The Distance from B to C is 6 miles more than twice the distance from A to B The distance from A to C s 2 miles more than four times the distance from A to B what is the Distance from A to B?
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If t denotes the time in years after 1980, find a formula for N(t), the population in millions at time t. Assuming that this rapid growth rate continues, estimate the population and the rate of population growth in the year 2000.
How do you know if a quadratic equation will have one, two, or no solutions? How do you find a quadratic equation if you are only given the solution
a triangle has sides of lenght 123 cm, 1.4m, and 403 mm. find the perimeter of the triangle in centimeters
The body temperatures of adults are normally distributed with a mean of 98.6° F and a standard deviation of 0.44° F. What temperature represents the 95th percentile?
Find how much radioactive material remains after 8 hours. Round your answer to the nearest thousandth.
after 10 min the process is stopped, and fresh water is poured into the tank at a rate of 2 gal/min, with the mixture again leaving at the same rate. Find the amount salt in the tank at the end of an additional 10 min.
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