Haley runs a day care center. Of the 8 children at the day care center, 2 of them are six-year-olds.

What is the probability that a randomly selected child will be a six-year-old?

Write 17/20 as a decimal and as a percent.

For the rule of 78, for a 12-month period, the last term in the sequence is 12 and the series sums to 78. for an 10 month period, the last term is and the series sum is . for a 15 month period, the last term is and the series sum is . for a 20 month period, the last term is and the series sum is

Identify the type of observational study described. a statistical analyst obtains data about ankle injuries by examining a hospital's records from the past 3 years. cross-sectional retrospective prospective