198 is your answer:
65+66+67 = 198
Hope I helped! You can pick me as brainliest if you want to.
Answer:
3:5 is the ratio
Step-by-step explanation:
to get the ratio you got to pick any one of them (like 6 and 10 or maybe 24 and 40) and simplify it till you can't simplify it anymore, okay hope it helped <3
Answer:
Your mom
Step-by-step explanation:
Answer:
X_<-2
Step-by-step explanation:
The answer to this is the above as this satisfy the equation further of you substitute the X with -2 is gives 18 and the following sign suggest it has to be a smaller digit.
This is correct by all means.
Hope this helps you and enlightens your day.
Answer:
Y = 0.4925X - 22.26 ;
(-12.413, 13.398) ;
Yes, there is
Step-by-step explanation:
X = IQ Score ; Y = musical aptitude
The regression equation from the table given using the slope and intercept coefficient :
Y = 0.4925X - 22.26
0.4925 = slope ; Intercept = - 22.26
The 95% confidence interval of the slope :
Confidence interval = b ± Tcritical*SE
Tcritical at 95%, df = n - 2 = (20 - 2) = 18
Tcritical = 2.1009
b = slope Coefficient = 0.4925
S.E = 6.143
Hence, we have :
Confidence interval = 0.4925 ± (2.1009 * 6.143)
Confidence interval = 0.4925 ± 12.9058287
Lower boundary = 0.4925 - 12.9058287 = - 12.413
Upper boundary = 0.4925 + 12.9058287 = 13.398
(-12.413, 13.398)
There is a significant relationship between IQ score and musical aptitude because, 0 is within the confidence interval obtained.