<p>The discrete random value \(X\) has the following probability distribution:</p>
<div class="content-block content-block--table"><div class="table-container"><table style="table-layout: fixed; width: 275px;"><colgroup><col style="width: 27.2727%;"><col style="width: 18.1818%;"><col style="width: 18.1818%;"><col style="width: 18.1818%;"><col style="width: 18.1818%;"></colgroup><thead><tr><th style="text-align: center; --cell-justify: center">\(x\)</th><th style="text-align: center; --cell-justify: center">\(1\)</th><th style="text-align: center; --cell-justify: center">\(2\)</th><th style="text-align: center; --cell-justify: center">\(3\)</th><th style="text-align: center; --cell-justify: center">\(4\)</th></tr></thead><tbody><tr><td style="text-align: center; --cell-justify: center">\(\mathrm{P}(X = x)\)</td><td style="text-align: center; --cell-justify: center">\(0.2\)</td><td style="text-align: center; --cell-justify: center">\(0.3\)</td><td style="text-align: center; --cell-justify: center">\(k\)</td><td style="text-align: center; --cell-justify: center">\(0.1\)</td></tr></tbody></table></div></div>
<ol class="abc-list"><li data-list-item-id="item-1789987638080-l4uymraia" data-list-item-path="item-1789987638080-l4uymraia"><div class="list-item-paragraph"><p>Find the value of \(k\).</p><span class="inline-marks">[2]</span></div></li><li data-list-item-id="item-1789987638656-thuhg72w6" data-list-item-path="item-1789987638656-thuhg72w6"><div class="list-item-paragraph"><p>Find \(\mathrm{P}(X &gt; 1.5)\).</p><span class="inline-marks">[2]</span></div></li><li data-list-item-id="item-1789987639112-g0ba8iqmr" data-list-item-path="item-1789987639112-g0ba8iqmr"><div class="list-item-paragraph"><p>Find \(\mathrm{E}(X)\).</p><span class="inline-marks">[2]</span></div></li></ol>

The discrete random value \(X\) has the following probability distribution:

Discrete Random Variables (DRV)

International Baccalaureate Mathematics: Analysis and Approaches Standard Level

2025 Nov TZ3 P1 Q1

2025 Nov TZ3 P1 Q1