Answer:
15
Step-by-step explanation:
If the line segment is IK, that means IJ+JK=IK. So, 7+8=15
Answer: He should have used the mean to determine the average because the data sets are approximately symmetric.
Step-by-step explanation
Answer:
The probability that the card will be a heart or a face card is P=0.4231.
Step-by-step explanation:
We have a standard deck of 52 cards.
In this deck, we have 13 cards that are a heart.
We also have a total of 12 face cards (4 per each suit). So there are 3 face cards that are also a heart.
To calculate the probability that a card be a heart or a face card, we sum the probability of a card being a heart and the probability of it being a face card, and substract the probability of being a heart AND a face card.
We can express that as:
Answer:
dude you have complicated questions
Step-by-step explanation:
Answer:
C . Yes, because aspirin is known to reduce heart attacks.
Step-by-step explanation:
A research examined so he find that aspirin reduce the heart attack .A chi-square test on the data collected in a randomized experiment.