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Flashcards in EXAM 2 Deck (24)
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1

WHEN PROBLEM IS "FORWARD" ROUND Z AREA TO ___ DECIMALS

2 DECIMALS

2

WHEN PROBLEM IS "BACKWARD" ROUND Z AREA TO ___ DECIMALS

CLOSEST VALUE

3

ROUND Z 2 DECIMALS WHEN PROBLEM IS ___

"FORWARD"

4

ROUND Z AREA TO CLOSEST VALUE WHEN PROBLEM IS ___

"BACKWARD"

5

FORMULA: t-STAT, µ KNOWN, σ UNKNOWN

6

FORMULA: CONFIDENCE INTERVAL FOR MU

(x_) +/- (tALPHA/2,n-1) (S / SQROOTn)

7

FORMULA: PROPORTION HYPOTHESIS

(pBAR - p0) / (SQROOT((p(1-p)) / (n))

8

80% CI, 0.1 SINGLE TAIL AREA, Z=___

Z = 1.28

9

90% CI, 0.05 SINGLE TAIL AREA, Z=___

Z = 1.645

10

95% CI, 0.025 SINGLE TAIL AREA, Z=___

Z = 1.96

11

98% CI, 0.01 SINGLE TAIL AREA, Z=___

Z = 2.33

12

99% CI, 0.005 SINGLE TAIL AREA, Z=___

Z = 2.575

13

FORMULA: CONFIDENCE INTERVAL FOR P

pBAR -/+ (ZSTAT) / (SQROOT((pBAR(1 - pBAR))/n)

14

THE 5 COMMON Zs RELATE TO WHAT CONCEPT?

CONFIDENCE INTERVAL

15

FORMULA: C.I. FOR MU: SIGMA KNOWN

xBAR -/+ (Z,sigma/2) (SQROOT(SIGMA^2 / n))

16

FORMULA: C.I. FOR MU: SIGMA UNKNOWN

xBAR -/+ (t,sigma/2,n-1) (SQROOT(S^2 / n))

17

FORMULA: C.I. FOR MU: SIGMAS KNOWN, INDEPENDENT SAMPLES

L = (xBAR1 - xBAR2) -/+ (Z,apha/2) (SQRT((SIGMA1^2 / n1) + (SIGMA2^2 / n2))

18

FORMULA: C.I. FOR MU: SIGMAS UNKNOWN, INDEPENDENT SAMPLES

L = (xBAR1 - xBAR2) -/+ (t,apha/2,d.f.) (SQRT((SIGMA1^2 / n1) + (SIGMA2^2 / n2))

19

SCARY d.f.

20

C.I. MU UNK, IND SAMPLES, EQUAL

21

C.I. MUs UNK, DEP SAMPLES

22

FORMULA: SAMPLE VARIANCE

23

C.I., LARGE ns, INDEP SAMPLES

24