What are the null and alternative hypothesis? Left right or two tailed? Critical values? Test statistic and p value? Reject or fail to reject null hypothesis?

A data analyst is interested in the proportion of college students who own an iPhone. She assumes that 90% of college students own an iPhone. To test this claim, she randomly selects 100 students and finds that 82 of them own an iphone. Using a significance level of 0.05, is there enough evidence to reject her initial assumption