Which of the following assumptions concerning the probability distribution of the random error term in a simple regression model is stated incorrectly? a. the distribution is normalb. the mean of the distribution is 0c. the errors are not independentd. the variance of the distribution is constantthe probability that a person tested positive on a screening test given that he/she has a disease is called the: a. negative predicitive valueb. positive predicitive valuec. sensitivityd. specificity

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Aefg - almn. find the ratio of aefg to almn. a)1: 4 b)1: 2 c)2.1 d)4: 1

In one day there are too high tides into low tides and equally spaced intervals the high tide is observed to be 6 feet above the average sea level after six hours passed a low tide occurs at 6 feet below the average sea level in this task you will model this occurrence using a trigonometric function by using x as a measurement of time assume the first high tide occurs at x=0. a. what are the independent and dependent variables? b. determine these key features of the function that models the tide: 1.amplitude 2.period 3.frequency 4.midline 5.vertical shift 6.phase shift c. create a trigonometric function that models the ocean tide for a period of 12 hours. d.what is the height of the tide after 93 hours?