Mathematics, 01.10.2019 21:00 gui00g7888888888888

# Which of the following is a true statement? a) the correlation coefficient r is always greater than 1. b) the coefficient of determination can never assume negative values. c) the variable that is being predicted in regression analysis is the independent variable. d) a negative correlation indicates that as values of x decrease, values of y will decrease. e) if there is no correlation between the independent and dependent variables, then the value of the correlation coefficient must be -1. f) none of the above

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Mathematics, 21.06.2019 18:00

Assume that the weights of quarters are normally distributed with a mean of 5.67 g and a standard deviation 0.070 g. a vending machine will only accept coins weighing between 5.48 g and 5.82 g. what percentage of legal quarters will be rejected? round your answer to two decimal places.

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Mathematics, 21.06.2019 19:30

What is the effect on the graph of the function f(x)=x when f(x) is replaced with -f(x)+4

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Mathematics, 21.06.2019 23:00

Assume that there is a 11% rate of disk drive failure in a year. a. if all your computer data is stored on a hard disk drive with a copy stored on a second hard disk drive, what is the probability that during a year, you can avoid catastrophe with at least one working drive? b. if copies of all your computer data are stored on four independent hard disk drives, what is the probability that during a year, you can avoid catastrophe with at least one working drive?

Answers: 2

Mathematics, 21.06.2019 23:00

Two years ago a man was six times as old as his daughter. in 18 years he will be twice as old as his daughter. determine their present ages.

Answers: 1

Which of the following is a true statement? a) the correlation coefficient r is always greater than...

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