researchers investigated whether swimming with dolphins improves clinical depression. The table shows results for a group that swam with dolphins compared to a control group that swam without dolphins.
Group with Dolphins |
Group without Dolphins |
x = 10 patients improved n = 15 patients |
x = 3 patients improved n = 15 patients |
at the 1% level of significance, test the claim that the percentage showing improvement with dolphins was significantly greater than that without dolphins.
Get Answers For Free
Most questions answered within 1 hours.