Total number of cards in the stack =180
Height of stack (all cards) = 38 inches
Now, we know that the thickness of 180 cards is 38 inches,
now the thickness of one card can be obtained by dividing the total thickness by the number of cards
Thickness of 1 card = Total thickness of all cards/ total number of cards
Thickness of 1 card = 38 inches/180 = 0.211111.....inches
Each card is 0.21 inch thick (rounded to two decimals)
Answer:
The answer is "The threat to internal validity is mortality".
Step-by-step explanation:
It signifies that while in terms of your study, persons were "morning." It usually signifies when people leave the studies. There will be only likely if indeed the experiment lasts a long period that it'll be a substantial danger to validity and reliability because the chance for drops increases. Eight content validity risks are history, maturity, instrument, test, choice, average regress, human engagement, and mortality.
