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standard deviationex) group 1 (inches) 68,69,70,71,72" mean = 70standard deviation =you do:ex)group #2: 54, 88, 50, 80, 78 ... mean = 70find the standard deviationex) var = 4 ... st.dev. =ex) st.dev. = 9 ... var =
sample populationmean x µ "mu"st.dev. s σ "sigma"variance s 2 σ 2size n Ndepends on fixedyour samplea "statistic" a "parameter"also: "data value" = xthe way that you calculate the sample mean and thepopulation mean are exactly the same.the difference is the kind of information it gives youex) find the standard deviation of the sample 7,10,16 (and the variance)note for standard dev:for a population, divide by thenumber of datafor a sample, divide by thenumber - 1
Page 1: Please answer the following questio
Page 5 and 6: @ samplinghow do you get your subje
Page 7 and 8: 1.4 sources of errorself-selecting
Page 9 and 10: 1.5 designing an experimentex) find
Page 11 and 12: suggested experiments1 objective: e
Page 13 and 14: suggested experimentsex)objective:
Page 15 and 16: ch2 - organizing and presenting dat
Page 17 and 18: 2.2 presenting quantitative datafre
Page 19 and 20: 19,22,56,20,21,27,32,22,47,25,24,42
Page 21 and 22: 2.4 misleading representations- a g
Page 23 and 24: ch 3: numerically summarizing data3
Page 25: 3.2 Measures of Dispersionhow sprea
Page 29 and 30: whats the standard deviation? [extr
Page 31 and 32: 3.4, 3.5 measures of position- rank
Page 33 and 34: oxplot- picture of the 5 numbersumm
Page 36 and 37: hw 3.2 questions3.2 online #1) find
Page 39 and 40: a man is 68" tall, for men the mean
Page 41 and 42: hw questions3.4online #4
Page 43 and 44: 45 47 48 56 57 59 60 62 63 64 64 65
Page 45 and 46: what is the mean in our example?not
Page 47 and 48: the normal probability distribution
Page 49 and 50: ex) find P(z 1.37) ?the TOTAL has t
Page 51 and 52: finding a z-score (or data value)gi
Page 53 and 54: ex) find P(z < 1.75)have:want:ex) f
Page 55 and 56: hw questions 6.1#8
Page 57 and 58: hw questions 7.2, 7.37.3 #7
Page 59 and 60: hw questions ch7
Page 61 and 62: hw questions ch77.2 #4
Page 63 and 64: for adult salmon length, µ=42" and
Page 65 and 66: 17% of Americans have high choleste
Page 67 and 68: ex) if p=.28, find P( > .32) with a
Page 69 and 70: hw questions ch8
Page 73 and 74: hw questions ch88.1probability that
Page 75 and 76: hypothesis testing (formally)1. a c
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ex) pollution level in a riveran en
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ex) a drug company is trying to mak
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hypothesis test about µ, what if w
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σhave σ dont have σ, have snote:
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ex)H 0 : µ=4H 1 : µ
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ex) does the public believe the dea
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hw questions - ch 10
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hw questions - ch10
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10.6 summary of ch10we have to iden
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ex) you need to know if proposition
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hw questions ch1010.3 #2 online
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10.3-online #2)Ho: µ = 1.67H 1 :
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why might we wind up with two equal
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lets analyze the margin of error:CI
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ex) find the 96% CI for µ when x =
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lets do a confidence interval....fo
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elationship between confidence leve
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ex) are the people in support of st
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hw questions ch99.3#1 construct a C
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hw questions ch9online 9.1#2confide
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hw questions ch9online 9.2#4constru
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ex) are men paid a higher salary (f
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to do a confidence interval for the
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hw questions - ch1111.1 #14x: .582
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linear correlation and regression [
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Doing Regression and Correlation us
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Probability [ch5]...from a more mat
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finding probabilities from real-wor
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ex) roll a dieP(roll a 6, then a 3,
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