A rocket is launched into the air and follows the path h(t)=−3t2+12t where t is time measured in seconds and h(t) is the height. Determine how long it takes the rocket to hit the ground. Show all work for full credit.

Now, martin can reasonably guess that the standard deviation for the entire population of people at the mall during the time of the survey is $1.50. what is the 95% confidence interval about the sample mean? interpret what this means in the context of the situation where 95 people were surveyed and the sample mean is $8. use the information in this resource to construct the confidence interval.