CNSLl 503l /l CNSL503l Modulel 4:l (Latestl
2025/l 2026l Update)l Statisticsl |l Questionsl &l Answers|l Gradel A|l 100%l Correctl (Verifiedl Solutions)-l Portagel Learning
Q:l Whatl isl thel purposel ofl calculatingl z-scores?
Answer:
Thel purposel ofl calculatingl z-scoresl isl tol understandl al score'sl relativel standingl withinl al distribution.l Thel z-scorel standardizesl scoresl froml differentl datal setsl withl differentl means.
Q:l Researchersl surveyedl 30l peoplel aboutl thel numberl ofl hoursl theyl spentl perl dayl onl sociall media.l Thel samplel meanl wasl 3l hoursl withl al standardl deviationl ofl 0.75l hours.l Usingl thisl information,l answerl thel followingl questions.
a.l Calculatel thel z-scorel forl al valuel ofl 5l hours.
Answer:
5-3/.75=l 2.667
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Q:l Researchersl surveyedl 30l peoplel aboutl thel numberl ofl hoursl theyl spentl perl dayl onl sociall media.l Thel samplel meanl wasl 3l hoursl withl al standardl deviationl ofl 0.75l hours.l Usingl thisl information,l answerl thel followingl questions.b.l Calculatel thel z-scorel forl al valuel ofl 3.5l hours.
Answer:
3.5-3/l .75l =l .67
Q:l Researchersl surveyedl 30l peoplel aboutl thel numberl ofl hoursl theyl spentl perl dayl onl sociall media.l Thel samplel meanl wasl 3l hoursl withl al standardl deviationl ofl 0.75l hours.l Usingl thisl information,l answerl thel followingl questions.c.l Calculatel thel z-scorel forl al valuel ofl 2.5l hours.
Answer:
2.5-3l /l .75l =l -.67
Q:l Researchersl surveyedl 30l peoplel aboutl thel numberl ofl hoursl theyl spentl perl dayl onl sociall media.l Thel samplel meanl wasl 3l hoursl withl al standardl deviationl ofl 0.75l hours.l Usingl thisl information,l answerl thel followingl questions.d.l Calculatel thel rawl valuel forl al z-scorel ofl -1.33.
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