diff --git a/3-central-limit-testing/demo-hypothesis-testing.ipynb b/3-central-limit-testing/demo-hypothesis-testing.ipynb
index 3f2d2fa..7173955 100644
--- a/3-central-limit-testing/demo-hypothesis-testing.ipynb
+++ b/3-central-limit-testing/demo-hypothesis-testing.ipynb
@@ -406,7 +406,7 @@
    "outputs": [],
    "source": [
     "# Remark that we use the t-distribution here!\n",
-    "p = p = stats.t.sf(sm, loc=m0, scale=ss/np.sqrt(n), df=n-1)\n",
+    "p = stats.t.sf(sm, loc=m0, scale=ss/np.sqrt(n), df=n-1)\n",
     "print(\"p-value: %.5f\" % p)\n",
     "if(p < a):\n",
     "    print(\"p < a: reject H0\")\n",
@@ -527,7 +527,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.11.2"
+   "version": "3.11.4"
   },
   "orig_nbformat": 2
  },