Mathematics, 24.08.2020 22:01 raerea2005
Which situation is an example of an observational study?
O A. Testing the effectiveness of a mouthwash by allowing one group
to use it and comparing the results with those of a group that
doesn't use it
O B. Dividing a class into thirds, giving each third a different amount of
time to read, and then testing comprehension
O C. Collecting the blood pressure readings of a group of elderly
individuals in a small town
O D. Having customers fill out a questionnaire about their favorite
brand of toothpaste
Answers: 1
Mathematics, 21.06.2019 13:20
Sherina wrote and solved the equation. x-56=230 x-56-56=230-56 x=174 what was sherina’s error? sherina’s work is correct. sherina only needed to subtract 56 from 230. sherina made a subtraction error when subtracting 56 from 230. sherina should have added 56 to both sides of the equation.
Answers: 2
Mathematics, 21.06.2019 14:20
Suppose a least-squares regression line is given by modifyingabove y with caret equals 4.302 x minus 3.293. what is the mean value of the response variable if xequals20?
Answers: 3
Mathematics, 21.06.2019 23:20
Question 4 of 102 pointsjuliana had $96, which is eight times as much money as al had. how mucmoney did al have? select the correct solution method below, representingals money with x.
Answers: 2
Mathematics, 22.06.2019 00:00
The probability that a tutor will see 0, 1, 2, 3, or 4 students is given below determine the probability distribution's missing value.
Answers: 1
Which situation is an example of an observational study?
O A. Testing the effectiveness of a mouthw...
English, 19.05.2021 14:20
Advanced Placement (AP), 19.05.2021 14:20
Mathematics, 19.05.2021 14:20
Computers and Technology, 19.05.2021 14:20
Mathematics, 19.05.2021 14:20
English, 19.05.2021 14:20
English, 19.05.2021 14:20
Mathematics, 19.05.2021 14:20