QUESTION 8 TikTok users spend an average of 55 minutes per day using the app. A researcher believes the time spend is less among teenager users. A random sample of 61 TikTok teenager users resulted in a sample mean daily use of 50 minutes, and a sample standard deviation of 12.5 minutes. Is there enough evidence to support the researcher's claim? Use a level of significance of 5%. The null hypothesis is: The alternative hypothesis is: The test statistic is: The critical value is: Can you reject the null hypothesis? Yes or No. State your conclusion in the context of the problem: QUESTION 9 A recent study found 60% of Americans plan to do their Holiday shopping online this year. A Massachusetts government official believes the proportion is more in MA. A random sample of 90 MA residents revealed 56 are planning to shop online during the Holidays. Is there enough evidence to support the claim? Use a level of significance of 5%. The null hypothesis Is: The alternative hypothesis is: The test statistic is: The critical value is: Can you reject the null hypothesis? Yes or No. State your conclusion in the context of the problem: QUESTION 10 This is not an extra credit