A physical therapist conducts a study examining the effect of implementing a group exercise program at an assisted living facility for elderly adults. One group of residents is selected to participate in the program, and a second group serves as a control. After 6 weeks, the researcher records a combined score measuring balance and strength for each individual. The data are as follows:

n = 10 n = 15
M = 12 M = 15.5
SS = 120.5 SS = 190.0

If the researcher decides to use a two-tailed test at an α = .05 level, what are degrees of freedom and tcritical value?

df = 23; tcrit = ±2.069
df = 25; tcrit = ±2.060
df = 5; tcrit = ±2.571
df = 23; tcrit = ±1.714

Construct a 95% confidence interval for the difference in sample means to estimate the difference in population means.

95% CI = 0.40 to 6.6
95% CI = 10.43 to 18.07
95% CI = 5.67 to 7.76
95% CI = 0.93 to 6.07

idk

step-by-step explanation:

answer: since the question is talking about growth you have to use the growth formula which is inital amount (1 + growth)^time

step-by-step explanation:

the intial amount is 1200, the growth is 4.8, and the time is 7. plug those numbers into the equation, also i think you have to change 4.8 into a percent. but, i have forgotton how to do that. if this is a online class go on to the lesson.

d

step-by-step explanation:

hello and welcome!

so, when we see the words "proportional" along with a table, we need to know that we're looking numbers that divide by the same thing.

looking at this table, we simply have to do a trial and error, and divide to see which numbers have the same quotient. if you look at choice a & c, they both have equal quotients for three of the numbers, with one exception, so those can't be the answer. looking at b, there is no similarity, so that can't be it. then, we see d; if you divide all the numbers in the table, you'll see that they all divide by two, which is a proportional relationship, and our answer!

also, always remember that the x will always be the number that goes into y, and somewhere behind this table, is a formula. for this specific table, the formula would be:

since our x-value is being divided by two to get the y-value. and if they were to ask for more numbers in the series, this is the formula you would use to find them.