Here are 10 test scores: 50, 74, 76, 77, 78, 79, 80, 80, 82, 84. the mean of these scores is 76. how does removing the outlier 50 affect the mean?

a.
the set has 50 as an outlier and removing it decreases the mean by about 6.

b.
the set has 50 as an outlier and removing it decreases the mean by about 2.

c.
the set has 50 as an outlier and removing it increases the mean by about 3.

In a survey of 1015 adults, a polling agency asked, "when you retire, do you think you will have enough money to live comfortably or not. of the 1015 surveyed, 534 stated that they were worried about having enough money to live comfortably in retirement. construct a 90% confidence interval for the proportion of adults who are worried about having enough money to live comfortably in retirement.

Complete the equation of the live through (-1,6) (7,-2)

Triangle abc has side lengths: ab = 3.5  cm, bc = 2.4 cm, and ac = 4.2 cmδabc ≅ δhjkwhat is the length of side hj?