As an entry-level statistician of a cellphone company, you are tasked to gather preliminary data that will be used to determine whether the battery charge of cellphones in your area lasts 18 hours - the population mean. You are required to do the following tasks: 1. Interview 15 SHS students any strand & level and ask them how long their cellphone battery lasts when fully charged. Present the raw data. 2. Determine the parameters needed for the test statistic such as u, o or s, n, and x. 3. State the null and alternative hypotheses. 4. Determine the appropriate test statistic. 5. Illustrate the rejection and acceptance region at 0.05 level of significance. Format: Number of hours that the cellphone battery lasts Student's Name when fully charge