300 high school students were asked how many hours of TV they watch per day. The mean was 2 hours, with a standard deviation of 0.5. Using a 90% confidence level, calculate the maximum error of estimate.
O 7.43%
0 4.75%
O 0.27%
0 5.66%

Human body temperatures have a mean of 98.20° f and a standard deviation of 0.62°. sally's temperature can be described by z = 1.4. what is her temperature? round your answer to the nearest hundredth. 99.07°f 97.33°f 99.60°f 100.45°f

Find the roots of the polynomial function f(x) = x^3 + 2x^2 + x

It is saturday morning and jeremy has discovered he has a leak coming from the water heater in his attic. since plumbers charge extra to come out on the weekends, jeremy is planning to use buckets to catch the dripping water. he places a bucket under the drip and steps outside to walk the dog. in half an hour the bucket is 1/5 of the way full. what is the rate at which the water is leaking per hour?