Hello, I need urgent help with these questions! Help is greatly appreciated.

Research shows that there is association between snore and sleep apnea, a kind of sleep disorder that people stop breathing in middle of the sleep. If undiagnosed and untreated, it has serious consequence such as depression, mood swing, heart problem or memory problem. According to a survey from a sample of 1000 adults (600 male, 400 female) between ages 35 to 45, among which 200 men and 100 women who reported snore routinely.

1a

1. What is the difference of proportion of snoring people between male and female samples? What is its confidence interval?

1b

1. Is the sample evidence from the survey sufficient to conclude whether there is gender difference in snoring tendency? To answer this question, perform a hypothesis test at = .05. State the alternative and null hypotheses, compute the observed significance level (p-value), and state the conclusion of your test.

1c

1. SupposethatprevalenceofApneaamongpopulationis5%,thelikelihoodofsnoringforanApneapatientsis99%,however,thelikelihoodofsnoringamongthosewithoutApneais20%,ifyourlovedonesnores,whatisthelikelihoodthatheorshemaybediagnosedasApnea?

Regards!