(Solved): (9 points) Music Streaming - Streaming media refers to the ability to enjoy audio and video on dem ...

(9 points) Music Streaming - Streaming media refers to the ability to enjoy audio and video on demand through the internet. The first audio and music streaming service Napster, originally launched on June 1. 1999. made music streaming a "free public good". Since then, many companies have developed paid and legally free streaming services that made music streaming easy and accessible for everyone with an int Remaining time: 117:39 (min:sec) years later, music streaming makes up 84% of the U.S. music industry revenue. Every year companies try to gain a greater percentage of the music streaming subscribers worldwide. Diana obtained the breakdown of the proportion of subscribers for 2020. She wonders if the proportions are different among students at her college. She obtains a random sample of 335 students at her college and records the streaming service they use most often. The results are summarized in the table. B. One sample Z-test for a population proportion Diana wants to use this data to conduct a hypothesis test. Round all calculated answers to 4 decimal places. 1. What type of hypothesis test should Diana use to answer her research question? A. One sample Z-interval for a population proportion C. One sample t-test for a population mean D. x test of independence Streaming Platform 2020 Percentages Spotify Apple Amazon Youtube Tencent Others A. Each observation must be independent of all other observations. 33% 17% 14% 10% 13% 13% Sample Results 116 49 41 44 24 61 E. x² goodness of fit test 2. Choose from the dropdown menus to complete the null and alternative hypotheses Diana should use to conduct the hypothesis test. Ho: The distribution of streaming platforms among students at her college is ? H?: The distribution of streaming platforms among students at her college is ? 3. What conditions must be met for the hypothesis test to be valid? the percentages reported in 2020. Any observed difference? the percentages reported in 2020. due to chance. D. x test of independence. E. x² goodness of fit test 2. Choose from the dropdown menus to complete the null and alternative hypotheses Diana should use to conduct the hypothesis test. Ho: The distribution of streaming platforms among students at her college is ? H?: The distribution of streaming platforms among students at her college is ? 3. What conditions must be met for the hypothesis test to be valid? A. Each observation must be independent of all other observations. B. There must be at least 10 'success and 10 'failure' observations. C. There must be at least 3 levels of the categorical variable. D. Population data must be nearly normal or the sample size must be at least 30. E. There must be an expected count of at least 5 for each level of the categorical variable. 4. Calculate the expected count for the number of students in the category, "Apple", under the null hypothesis. Expected count for "Apple" = The observed test statistic for this problem is 21.179928. 5. Calculate the contribution toward the test statistic from the category "Apple". Contribution= 6. State the degrees of freedom for this test. df = 7. Calculate the p-value. Note that the test statistic is 21.179928, as stated above. the percentages reported in 2020. Any observed difference? the percentages reported in 2020. p-value= due to chance. Remaining time: 117:33 (min:sec)