Anwar selects a playing card at random from the following 6 cards:
{ 9 of hearts, 5 of spades, 6 of hearts, 2 of spades, 4 of hearts, 7 of hearts
Let A be the event that Anwar selects an even-numbered card and B be the event that she chooses a
heart.
Which of the following statements are true?

2people are trying different phones to see which one has the better talk time. chatlong has an average of 18 hours with a standard deviation of 2 hours and talk-a-lot has an average of 20 hours with a standard deviation of 3. the two people who tested their phones both got 20 hours of use on their phones. for the z-scores i got 1 for the chatlong company and 0 for talk-a-lot. what is the percentile for each z-score?

The radius of the earth is two times the radius of the moon. what fraction of the volume of the earth is the volume of the moon?

In a 45-45-90 right triangle, what is the ratio of the length of one leg to the length of the other leg? а . 1: 2 в. 2: 1 с. 2: 1 d. 1: 1