Google wants to know if there is strong evidence that more than 40% of smartphone users actively use Twitter. Use the sample data to perform the hypothesis test at the 5% significance level. For full credits, you need to specify the null and alternative hypotheses, appropriate test- statistic value, pvalue and conclusion.

a. Parameter to be tested:
b. H(0): H(A) :
c. Test-statistics:
d. p-value:
e. Conclusion: __