Instruction: Determine the appropriate test and apply the steps/procedure in hypothesis testing which leads to decisions of either accepting or rejecting some statements about the population.

1. A research article reported that Country X is the world's top Social Media user with an average daily usage of 4.25 hours. A researcher surveyed 50 teens in her town and asked them about their social media usage. It was found that the average usage of the selected teenagers is 5.5 hours with standard deviation of 2.4 hours. Is there sufficient evidence that teens in their town use social media longer? Use = 0.05

a) In words, define the random variable X = ____________

b) Null Hypothesis

c) Alternative Hypothesis

d) The level of significance

e) Determine the test statistic using the data (show solution)

f) Provide the decision rule of the test

g) Decision: __________

h) Conclusion