Would a hypothesis for example be “it is cloudy” and the prediction would be “it will rain” ? can predictions be wrong even if the hypothesis is correct ?

1st one is no, i think the second is no

Explanation:

hypothesis is an if-then statement and predictions are made based off the hypothesis

hypothesis ex: "if you get at least 6 hours of sleep, [then] you will get better grades on tests than if you get less sleep."

prediction: "i will get a lower grade if I get 2 hours of sleep than I will if I get 6 hours of sleep"