a)
[tex]\begin{gathered} \text{ From the table, we can s}ee\text{ that } \\ \text{ The probability that she receives exactly }4\text{ text messages per day =}\frac{3}{16} \end{gathered}[/tex]b)
[tex]\text{ The probability that she receives fewer than 4 text messages = 1-}\frac{3}{16}=\frac{13}{16}[/tex]c)
[tex]\text{ The probability that she receives least two messages = }\frac{3}{8}+\frac{1}{16}+\frac{3}{16}=\frac{6+1+3}{16}=\frac{10}{16}=\frac{5}{8}[/tex]