Data on smartphone penetration as below:

90% of respondents in the 16-24 years age group, 87% in the 25-34 years age group, 80% in the 35-54 years age group, 50% in the 55-64 years age group, and 18% in the 65+ years age group reported

owning a smartphone. Assume each age group consisted of 500 respondents.

a.Show a contingency table summarizing the collected data.

b.State the hypothesis. At the 0.05 level of significance, is there evidence of a difference among the age groups in Indonesia that reported owning a smartphone?

c.Determine the p-value and interpret its meaning

d.If appropriate, use the Marascuilo procedure and =0.05 to determine which age groups differ