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AP Statistics Videos 40 videos
AP Statistics 2.1 Exploring Data. How does this change affect the mean, standard deviation, and IQR?
AP Statistics 5.1 Exploring Data. What does this information tell us about the data?
AP Statistics 5.2 Exploring Data. Which method would not be a good option?
AP Statistics 2.4 Statistical Inference 180 Views
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Description:
AP Statistics 2.4 Statistical Inference. Calculate the margin of error.
Transcript
- 00:00
Thank you We sneak In here's your smoke too sure
- 00:06
brought to you by beehives marge simpson is really wishing
- 00:10
she would have gone with a different hairstyle way took
- 00:13
a random sample of bees from a local hive and
- 00:15
found out that of the three hundred fifty bees polled
Full Transcript
- 00:18
three hundred two of them gather pollen all day Kind
- 00:22
of makes you wonder what the other forty eight bees
- 00:24
are doing with their time there Okay so calculate the
- 00:26
margin of error That would help you determine the ninety
- 00:29
five percent confidence interval for the proportion of bees that
- 00:32
collect pollen all day long And here the potential answers
- 00:35
All right right there those guys Well let's swap answer
- 00:41
e out of here because we totally have enough information
- 00:44
to determine the confidence interval i want an answer be
- 00:47
if you've been paying attention in class by now you've
- 00:49
memorized your z table for the usual confidence intervals If
- 00:53
so then one point nine six should look awfully familiar
- 00:57
Well ninety five percent of the area under a normal
- 00:59
curve lies roughly within one point Nine six standard deviations
- 01:03
of the mean that's the number used in formulating a
- 01:07
ninety five percent confidence interval z values like one point
- 01:11
nine six or nice tohave and fun to work with
- 01:13
but they aren't the margin of error So b is
- 01:16
an incorrect answer Interesting is highly suspect as well if
- 01:19
you really think about it Point eight six to nine
- 01:22
is actually the percentage of bees in our high but
- 01:25
gather pollen all day Three o two out of three
- 01:27
fifty or busy as bees by the same token point
- 01:31
one three seven One is the percentage of these who
- 01:34
you know chill If the queen finds out it'll really
- 01:37
put her stinger in and not buzz off answer See
- 01:40
you are a percentage and not the margin of error
- 01:43
What we're left with using all the other numbers we
- 01:45
talked about is this equation point zero three six One
- 01:49
is the margin of error we're searching for So you
- 01:51
got stung if you answered a and you're looking sweet
- 01:54
as honey if you chose d remember next time you
- 01:57
come across a hive you khun b ninety five percent
- 01:59
certain There are a few bees inside that goofing off
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AP Statistics 2.1 Exploring Data. How does this change affect the mean, standard deviation, and IQR?
AP Statistics 5.1 Exploring Data. What does this information tell us about the data?
AP Statistics 5.2 Exploring Data. Which method would not be a good option?
AP Statistics 1.5 Statistical Inference. Which of the following statements is false?
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