The data to represent average test scores for a class of 16 students includes an outlier value of 72. if the outlier is included, then the mean is 86. which statement is always true about the new data when the outlier is removed?

a.) the mean would increase.
b.) the mean would decrease.
c.) the median would increase.
d.) the median would decrease.

The function f(x) = 14,600(1.1)* represents the population of a town x years after it was established. what was the original population of the town?

Find the sum of the given arithmetic series. 24 + 17 + 10 + 3 + + (–39)

Atest of sobriety involves measuring the subject's motor skills. a sample of 31 randomly selected sober subjects take the test and produce a mean score of 64.4 with a standard deviation of 2. a claim is made that the true mean score for all sober subjects is equal to 65. for each part below, enter only a numeric value in the answer box. for example, do not type "z =" or "t =" before your answers. round each of your answers to 3 places after the decimal point. (a) calculate the value of the test statistic used in this test. test statistic's value = (b) use your calculator to find the p-value of this test. p-value = (c) use your calculator to find the critical value(s) used to test this claim at the 0.2 significance level. if there are two critical values, then list them both with a comma between them. critical value(s) =