1. what proportion of your sample is less than 0.4 seconds? ( My answer= 7/20)

2. Estimate the proportion of all twelfth graders at this school who have a reaction time of less than

0.4 seconds. Explain your reasoning.

3. There are 120 twelfth graders at this school. Estimate how many of them have a reaction time of less than 0.4 seconds?

What is the order of operations for 2 + (3 - 9) ÷ -3 · 4 in number order 1. subtraction 2. division 3. addition 4. multiplication

Formulate the indicated conclusion in nontechnical terms. be sure to address the original claim. the foundation chair for a hospital claims that the mean number of filled overnight beds is over 523, and she is therefore justified starting a funding campaign to add a wing to the hospital. assuming that a hypothesis test has been conducted and that the conclusion is failure to reject the null hypothesis, state the conclusion in nontechnical terms.

Eliza wants to make $10,000 from her investments. she finds an investment account that earns 4.5% interest. she decides to deposit $2,500 into an account. how much money will be in her account after 14 years?