Related questions with answers

Determine the mass (in $\mathrm{g}$ ) of each sucrose solution that contains $12 \mathrm{~g}$ of sucrose.

(a) $4.1 \%$ sucrose by mass

(b) $3.2 \%$ sucrose by mass

Sucrose, or table sugar, is a disaccharide. This means that sucrose is composed of two simple sugars chemically bonded together. Sucrose can be separated into its components by heating it in an aqueous sulfuric acid solution. Research what products are formed by breaking up sucrose.What role does the acid play?

Although founded only in $2004$ , Facebook has more than $500$ million active users, of which 50% log on to Facebook on any given day. In a recent survey by Facebook, young users (those born after 1984) were asked about their preference for delivering the news about breaking up a relationship (The Wall Street Journal, November 27-28, 2010). One of the shocking results was that only 47% of users preferred to break the news in person. A researcher decides to verify the survey results of Facebook by taking her own sample of $200$ young Facebook users. The preference percentages from Facebook and the researcher's survey are presented in the following table.

\begin{array}{|l|c|c|} \hline \begin{array}{l} \text { Delivery } \\ \text { Method } \end{array} & \begin{array}{c} \text { Facebook } \\ \text { Results } \end{array} & \begin{array}{c} \text { Researcher's } \\ \text { Results } \end{array} \\ \hline \text { In Person } & 47 \% & 55 \% \\ \hline \text { Phone } & 30 \% & 28 \% \\ \hline \text { Email } & 4 \% & 8 \% \\ \hline \text { Facebook } & 5 \% & 3 \% \\ \hline \text { Instant Message } & 14 \% & 6 \% \\ \hline \end{array}

At the 5% level of significance, test if the researcher's results are inconsistent with the survey results conducted by Facebook. Provide the details, using the $p$ -value approach.