Toddlers tend to have an abundance of energy. To put that energy to good use a fitness instructor creates a Toddler Fitness class. In this class the participants have to do everything the fitness instructor’s energetic toddler daughter does.
To compare the number of calories burned in Toddler Fitness versus the standard fitness class 40 volunteers are recruited. The volunteers are assigned at random to participate in Toddler Fitness or the standard fitness class. Each participant wears a calorie counting fitness watch. At the end of the class the calories burned by each participant is recorded and the average number of calories burned is calculated for each class.

After the classes ended, the instructor learned that the mean number of calories burned by the participants in Toddler Fitness was significantly greater than the mean number of calories burned by the participants in the standard fitness class.

Which of the following is the most appropriate conclusion?

The correct answer is (C).

This study included random assignment of the participants to the two treatment groups, therefore this experiment does provide convincing evidence of cause-and-effect. Also, because the participants were not randomly selected (they were volunteers), the results can only be generalized to individuals similar to those in the study.

Step-by-step explanation:

answer: huh

step-by-step explanation:

step-by-step explanation: so we look at the formula un = a + (n-1)d

un is the amount of seats

n is the nth term aka row number

a is the original sequence/row number

d is the difference between each term

so in this a=22 d=6 and n can remain as n because we are simply formjng a rule

lets put these in the equation

un=22+(n-1)(6)

this is your answer to part a

however

lets double check that this is correct, we'll try putting it into the second term

un=a+(n-1)d

u2=22+(2-1)(6)

u2=22+6

u2=28

as the question said the second row has 28 seats so now we know the formula we made is correct.

as for part b

un=a+(n-1)

its asking us to find a row with 100 seats.

remember un was the amount of seata so all we do is substitute this in.

un=100 a=22 d=6

un=a+(n-1)d

100=22+(n-1)(6)

so now we simplify to find n which is the row number.

100-22=22+(n-1)(6)-22

78=(n-1)(6)

78/6=(n-1)(6)/6

13=n-1

13+1=n-1+1

14=n

so now we know that in the 14th row there is 100 seats.

hope this and that you understood! its my first time using the app or anyone out on here : p its also me to revise so a bunch! ask more questions if you dont understand ☺