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Thank you We sneak in and here's your shmoop toos

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your brought to you by sleep We'd tell you more

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about it But well it's a real snooze fest All

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right A student at the university of wasa mata conducted

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a survey by asking five hundred random students at her

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university how many hours of sleep they got each night

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and how good their grades were on a standardized test

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The survey concluded that students benefit from more sleep God

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the data table is shown below and the margin of

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error is plus or minus two percent Which of the

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following inferences is most likely false right here the potential

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answers checking this out way Alright wait more sleep equates

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to better academic performance Oh hold the phone Stop the

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presses Muzzle the messenger boy All right so nothing earth

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shattering We all know that when you're well rested you're

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sharper And when you're sharper you score better on tests

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But that's not quite What this question asks were given

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four inferences and we're being asked to pick the one

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that doesn't hold water Yeah it's super important to notice

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that we're looking for the one false inference so we

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can't just find one that checks out and call it

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a day Well let's check out option a and see

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what it's selling most university students at wasim outta you

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sleep more than four hours That true Well according the

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table Yeah totally There are apparently two hundred students who

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sleep less than four hours but one hundred seventy plus

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one Thirty or three hundred students who sleep more than

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that No because is legit We can cross off our

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list Next up option c the majority of students that

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wasa matter you will score ninety three or above on

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the standardized test regardless of how much sleep you get

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Sure check out the median scores ninety three or higher

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across the board regardless of sleep And what is the

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median Tell us Well a median is the exact middle

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number in a data set meaning that at least half

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of each group is going to score ninety three or

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higher on their test making this one true as well

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Wow Impressive They're either some real geniuses in the school

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or these tests include questions like how many fingers do

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you have And is the sun hot What about d

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Students at once a mighty you who sleep more than

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four hours and i generally perform better on standardized test

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than students who sleep less than four hours a night

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Well yeah of course they do And the table backs

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that up Numbers in every category are improved when the

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test taker gets more than four hours asleep Which brings

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us to beat mohr sleep students that wasim body you

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get the better their performances on a standardized test Okay

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probably Yeah but we have to look at what the

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tables telling us here if we check out the median

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column for example there's a definite jumpin quality of performance

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for those with less than four hours asleep to those

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with four to six hours But from four to six

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hours to sixty eight hours Well the ninety three ninety

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four so close that they fall within the margin of

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error Remember that two percent thing In other words they're

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statistically the same And if you look at the median

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or range it's a similar deal So while it's probably

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true that mohr sleep will always lead to a better

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test scores the findings presented in this table don't quite

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close the case Your answer is beached But if you

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just left through this entire video well you probably don't

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have to worry You're alert Well Rest itself is gonna

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ace that exam tomorrow as long as this particular question 00:03:22.7 --> [endTime] And it doesn't come up

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