Part 1) A particular large university has large sections of a particular course.
ID: 3157618 • Letter: P
Question
Part 1) A particular large university has large sections of a particular course. The department that offers the course wants to know if students enrolled in the course like it or not. After the first month, students who have attended every class are asked if they like the course. This survey suffers from:
a)question wording bias
b)undercoverage bias
c)response bias
d)voluntary response bias
Part 2: I am planning to take my car on a long trip next weekend. The "check engine" warning light has just come on in the car. I am deciding whether or not to take the car for repair before my trip. In making this decision, I am using the null hypothesis: "The car can make the trip as it is." A type I error in this situation would be:
a) The car can make the trip, and I think it can.
b) The car can make the trip, but I think it can't.
c)The car can't make the trip, but I think it can.
d) The car can't make the trip, and I think it can't.
Part 3: Six people are in a room. The mean age of the people is 47. The ages of five of the people in the room are 16, 38, 53, 58, and 66. How old is the sixth person?
a)
47
b)
48
c)
49
d)
50
e)
51
Final Part:
Which value of r would describe the strongest linear relationship between x and y?
a)
-.78
b)
-.53
c)
0
d)
.62
e)
.71
a)
47
b)
48
c)
49
d)
50
e)
51
Explanation / Answer
Part 1) A particular large university has large sections of a particular course. The department that offers the course wants to know if students enrolled in the course like it or not. After the first month, students who have attended every class are asked if they like the course. This survey suffers from:
b)undercoverage bias
Part 2: I am planning to take my car on a long trip next weekend. The "check engine" warning light has just come on in the car. I am deciding whether or not to take the car for repair before my trip. In making this decision, I am using the null hypothesis: "The car can make the trip as it is." A type I error in this situation would be: reject Ho when Ho is true
c) The car can't make the trip, and I think it can
Part 3: Six people are in a room. The mean age of the people is 47. The ages of five of the people in the room are 16, 38, 53, 58, and 66. How old is the sixth person?
16 + 38 + 53 + 58 +66 + x / 6 = 47
x = 51
Which value of r would describe the strongest linear relationship between x and y?
r = -0.78
enve r is negative the value that is close to 1 is the most strongest linear relationship