Answer:
Well well well.
Step-by-step explanation:
DONOVON
Answer:
[B] A two-sample t -test for a difference between means.
Step-by-step explanation:
"<u>A two sample t test for a difference in means was conducted to investigate whether the average time to swim a lap with the freestyle stroke is different from the average time to swim a lap with the butterfly stroke</u>."
378. Comparing the each batch, there is a difference of 18 for each batch. So 7*18= 126, then add that to 252; you'll get 378.
(ex 198-180=18; 216-198=18; etc)
hope that helps
Answer: A) -8
B) - 41
C) - 39
Step-by-step explanation: