{"id":"mkt2-webinar-time-slot-timezone-coverage","audience":"marketing","category":"data","track":"marketing","technique":"constraints","level":"advanced","title":"Choose a webinar slot by registrants reached in work hours","free":false,"task":"You're picking a time for the Nov 18 webinar. Write a prompt for a markdown table with columns Slot (ET) | Reached | Share for the three slots, where Reached is the number of registrants for whom the slot falls between 9 a.m. and 5 p.m. their local time (inclusive of 9:00, exclusive of 5:00 p.m.), and Share is Reached divided by 1,000 as a percent. End with a line starting \"Pick:\" naming the slot with the highest share. Under 90 words, no other text.","materialLabel":"Registrant time zones and slots (attached to your prompt automatically)","material":"WEBINAR ON NOV 18 - choose the start time\n\nRegistrants by region (1,000 total) and difference from Eastern Time on Nov 18:\n- Eastern (ET): 400 (same time)\n- Central (CT): 150 (1 hour behind ET)\n- Pacific (PT): 250 (3 hours behind ET)\n- United Kingdom (GMT): 200 (5 hours ahead of ET)\n\nCandidate slots (all in ET, each 45 minutes): 9:00 a.m. ET, 11:00 a.m. ET, 1:00 p.m. ET.\n\nNotes: the CEO prefers 9:00 a.m. ET because that's her morning. The UK team lead would like it earlier. We don't have data on preferences, only time zones.\nRecording goes to all registrants.","rules":[{"type":"plainText"},{"type":"maxWords","max":90}],"mistakes":[{"title":"Choosing the CEO's slot","why":"The AI honors the CEO's preference.","fix":"Say: \"Pick the slot with the highest share; ignore preferences.\"","checks":["r2"]},{"title":"Wrong time zone math","why":"The AI adds when it should subtract.","fix":"Give the offsets: CT -1, PT -3, UK +5.","checks":["r1"]},{"title":"Wrong share base","why":"The AI divides by one region.","fix":"Say: \"Share = Reached / 1,000.\"","checks":["r0"]},{"title":"Letting markdown through","why":"AI adds bold text and headings by default.","fix":"Add: \"Plain text only, no bold, no headings.\"","checks":["plainText"]},{"title":"Trusting the AI to count words","why":"AI is bad at counting and often runs past a word limit.","fix":"Cap each part (for example \"each line under 15 words\") so the total lands well under the limit.","checks":["maxWords"]}],"promptHints":[{"label":"Names the columns","patterns":["slot.*reached.*share"]},{"label":"Defines local work hours","patterns":["9 a\\.?m","5 p\\.?m","local time"]},{"label":"Gives the offsets","patterns":["1 hour behind","3 hours","5 hours ahead","-1","\\+5"]},{"label":"Defines share","patterns":["/ 1,000","divided by 1,000","of 1,000"]},{"label":"Asks for Pick line","patterns":["pick:","highest share"]}],"hint":"Time zones are where mistakes hide. Give the work-hour window, the offsets and the share formula, and tell the AI to ignore preferences.","mission":"Pick the Nov 18 webinar time reaching most registrants in work hours.","musts":["9:00 in, 5:00 out","Share of 1,000","Highest share wins"],"rubricLabels":["The table has the columns Slot (ET) | Reached | Share with 9:00 a.m. ET 600 (60%), 11:00 a.m. ET 750 (75%) and 1:00 p.m. ET 800 (80%)","Reached uses local work hours: for 11:00 a.m. ET only Pacific (8 a.m.) is outside; for 1:00 p.m. ET only the UK (6 p.m.) is outside; for 9:00 a.m. ET Central and Pacific are outside","The last line is Pick: 1:00 p.m. ET, and it does not pick 9:00 a.m. ET because of the CEO's preference"]}