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Facilité d'utilisation
Execution 2. 5(DIST)b(Norm)b(P.D)... Normal Probability Density 3. Set calculation parameters. 4. Align the cursor with [Execute] 1(CALC) ... Performs calculation. 6(DRAW) ... Draws graph. 41 examples 41 examples 0 0 aa0 Example Calculate probability density p when the random variable for normal distribution N (35, 22) is 36. Procedure 1 m STAT2 2 5(DIST) b(Norm)b(P.D) 3dgw cw dfw 1(None)c 4 1(CALC) Result Screen Result: p = 0.176 5 i 6(DRAW) (Pressing6(DRAW) draws the graph.) 6 1(P-CAL) dgw Enter the X-coordinate. The part on the graph indicates the location of the displayed coordinates (x, p). 42 examples 42 examples k kkkkkNormal Distribution Probability Set Up 1. On the icon menu, select STAT2. Execution 2. 5(DIST)b(Norm)c(C.D)... Normal Distribution Probability 3. Set calculation parameters. 4. Align the cursor with [Execute] 1(CALC) ... Performs calculation. 43 examples 43 examples aaaa0 Example Given that x is normal distribution with .= –25 and .= 4, find Pr (–21 < <<<<< x < <<<<< –19). Procedure 1 m STAT2 2 5(DIST)b(Norm)c(C.D) 3 -cbw -bjw ew -cfw 1(None)c 4 1(CALC) Result Screen Result: p = 0.092 44 examples 44 examples k kkkkkInverse Cumulative Normal Distribution Set Up 1. On the icon menu, select STAT2. Execution 2. 5(DIST)b(Norm)d(Invrse)... Inverse Cumulative Normal Distribution 3. Set calculation parameters. 4. Align the cursor with [Execute] 1(CALC) ... Performs calculation. 45 examples 45 examples 0 0 aa0 Example Find z so that 5% of the area under the standard normal distribution curve lies to the right of z. Procedure 1 m STAT2 2 5(DIST)b(Norm)d(Invrse) 3 2(RIGHT)c .afw bw aw 1(None)c 4 1(CALC) Result Screen Result: x = 1.645 k kkkkkStudent-t Probability Density 46 examples Set Up 1. On the icon menu, select STAT2. Execution 2. 5(DIST)c(T)b(P.D)... Student-t Probability Density 3. Set calculation parameters. 4. Align the cursor with [Execute] 1(CALC) ... Performs calculation. 6 (DRAW) ... Draws graph. 47 examples 47 examples 0 0 aa0 Example Calculate probability density p when random variable x is 1 for a t- distribution with degrees of freedom is 2. Procedure 1m STAT2 25(DIST)c(T)b(P.D) 3bw cw 1(None)c 41(CALC) Result Screen Result: p = 0.192 5i 6(DRAW) (Pressing 6(DRAW) draws the graph.) 61(P-CAL) bw Enter the X-coordinate. The part on the graph indicates the location of the displayed coordinates (x, p). 48 examples 48 examples k kkkkkStudent-t Distribution Probability Set Up 1. On the icon menu, select STAT2. Execution 2. 5(DIST)c(T)c(C.D)... Student-t Distribution Probability 3. Set calculation parameters. 4. Align the cursor with [Execute] 1(CALC) ... Performs calculation. 49 examples 49 examples 0 0 aa0 Example Find point t when the right side probability is 0.05 for a t-distribution with degrees of freedom is 15. Procedure 1 m STAT2 2 5(DIST)c(T)c(C.D) 3 b.hw bEjjw bfw 1(None)c 4 1(CALC) 1.7 < t i ffffb.iw ccc 1(CALC) 1.7 < t < 1.8 i ffffb.hfw ccc 1(CALC) 1.75 < t < 1.80 i ffffb.hgw ccc 1(CALC) 1.75 < t < 1.76 i ffffb.hfdw ccc 1(CALC) • • A trial-and-error process is repeated until an appropriate value is found. • Result Screen Result : t =1.753 k kkkkk.2 Probability Density 50 examples Set Up 1. On the icon menu, select STAT2. Execution 2. 5(DIST)d(.2)b(P.D)... .2 Probability Density 3. Set calculation parameters. 4. Align the cursor with [Execute] 1(CALC) ... Performs calculation. 6(DRAW) ... Draws graph. 51 examples 51 examples 0 0 aa0 Example Calculate probability density p when random variable x is 1 for a .2distribution with degrees of freedom is 3. Procedure 1m STAT2 25(DIST)d(.2)b(P.D) 3bw dw 1(None)c 41(CALC) Result Screen Result: p = 0.242 5i 6(DRAW) (Pressing 6(DRAW) draws the graph.) 61(P-CAL) bw Enter the X-coordinate. The part on the graph indicates the location of the displayed coordinates (x, p). k kkkkk.2 Distribution Probability 52 examples Set Up 1. On the icon menu, select STAT2. Execution 2. 5(DIST)d(.2)c(C.D)... .2 Distribution Probability 3. Set calculation parameters. 4. Align the cursor with [Execute] 1(CALC) ... Performs calculation. 53 examples 53 examples 0 0 aa0 Example Calculate the probability of a .2 distribution when the degrees of freedom is 4 and the upper limit is .2 = 2. Procedure 1m STAT2 25(DIST)d(.2)c(C.D) 3aw cw ew 1(None)c 41(CALC) Result Screen Result : p = 0.264 k kkkkkF Probability Density 54 examples Set Up 1. On the icon menu, select STAT2. Execution 2. 5(DIST)e(F)b(P.D)... F Probability Density 3. Set calculation parameters. 4. Align the cursor with [Execute] 1(CALC) ... Performs calculation. 6(DRAW) ... Draws graph. 55 examples 55 examples 0 0 aa0 Example Calculate probability density p when random variable x is 1 for an F- distribution with numerator degrees of freedem is 24 and denominator degrees of freedom is 19. Procedure 1 m STAT2 2 5(DIST)e(F)b(P.D) 3bw cew bjw 1(None)c 4 1(CALC) Result Screen Result: p = 0.908 5 i 6(DRAW) (Pressing 6(DRAW) draws the graph.) 6 1(P-CAL) bw Enter the X-coordinate. The part on the graph indicate...