13 A reporter is writing an article on the \(\mathrm { CO } _ { 2 }\) emissions from vehicles using the Large Data Set. The reporter claims that the Large Data Set shows that the CO2 emissions from all vehicles in the UK have declined every year from 2002 to 2016. Using your knowledge of the Large Data Set, give two reasons why this claim is invalid.
[0pt] [2 marks]
\includegraphics[max width=\textwidth, alt={}, center]{6ad3bac9-bf08-443d-8be2-b0c26209ffe8-19_2488_1716_219_153} \begin{center} \begin{tabular}{|l|l|l|} \hline 14 & 14 (b) (ii) Find \(\mathrm { P } ( X < 4 )\) \(\text { Find } \mathrm { P } ( X < 4 )\) [2 marks] \(\_\_\_\_\) \(\_\_\_\_\) \(\_\_\_\_\) \(\_\_\_\_\) \(\_\_\_\_\) \(\_\_\_\_\) & \begin{tabular}{l} A customer service centre records every call they receive.
It is found that \(30 \%\) of all calls made to this centre are complaints.
A sample of 20 calls is selected.
The number of calls in the sample which are complaints is denoted by the random variable \(X\).
State two assumptions necessary for \(X\) to be modelled by a binomial distribution.