Why? how much points do you have to spare?
Answer:
wow howw
Step-by-step explanation:
The appropriate choice is z = 1.41.
The empirical rule tells you 68% of the distribution is within 1 standard deviation, so p(z > 1) ≈ 0.17. This means the z value is more than 1 for the probability to drop to 0.08. The only choice that is greater than 1 is 1.41. (The number is actually about 1.40507.)
The ratios of bats to balls would be the number of bats over the number of balls:
15/12
This can be reduced because both numbers are multiples of 3, so divide each one by 3:
15/12 = 5/4
Answer: 5/4