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Question: A data set was coded by subtracting 20 from each value and then multiply each difference by 5. The mean and variance of the coded data are 8 and 15,respectively. Determine the mean and variance of the original data.
A local hamburger shop sold a combined total of 761 hamburgers and cheeseburgers on friday. There were 61 more cheeseburgers sold then hamburgers. How many hamburgers were sold on friday?
A fitness ball is delivered in a flat package witha hand pump. The pump inflates the ball at a rate of 280 cmcubed per pump, to a diameter of 28cm. How many pumps are needed to inflate the ball? Please explain how you got it.
Let f(x) = x^3, and compute the Riemann sum of f over the interval [6, 7], choosing the representative points to be the midpoints of the subintervals and using the following number of subintervals (n). (Round your answers to two decimal places.)
Determine the expected value of X
thirty randomly selected students took the calculus final. if the sample mean was 89 and the standard deviation was 6.2
what is the distance between the origin and the point (5,12)? if necessary, round your answers to two decimal places.
Find the independent and dependent variable
How many different ways are there for an admissions officer to select a group of 5 college candidates from a group of 9 applicants for an interview?
Suppose you wish to build a spa on a wood deck. The deck is to be built 4 ft above level ground. It is to be 50 ft by 30 ft and is to contain a spa that is circular with a 14-ft diameter. The spa is 4 ft deep.
If it takes the doctor 80 minutes to prepare a tooth for a crown, and 30 minutes to seat the crown and the fee for the crown is $550, what does the doctor produce per hour?
Determine the probability of each option being preferred by the company's cardholders.
Calculate the monthly payment for each loan individually.
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