3.29
a) Here we want to find z such that P( Z < z) = 0.32
Let's use TI-84 calculator:
Command :
2ND >>> VARS >>>highlight "DISTR" >>>3:invNorm( >>> Then Enter
area : 0.32
: 0
: 1
Then highlight Paste and click on Enter
So we get the following output.
Therefore answer is -0.47 after rounding it up to two decimal place.
b) Here we want to find z such that P( Z > z) = 0.35
This implies P(Z < z) = 1 - 0.35 = 0.65
Command :
2ND >>> VARS >>>highlight "DISTR" >>>3:invNorm( >>> Then Enter
area : 0.65
: 0
: 1
Then highlight Paste and click on Enter
So we get the following output.
Therefore answer is 0.39 after rounding it up to two decimal place.
3.33
Here we want to find P( 0.8725 < X < 0.8775 )
X ~ N( 0.8750, 0.0012)
Command:
2ND >>> VARS >>>highlight "DISTR" >>>2normalcdf( >>> Then Enter
lower : 0.8725
upper: 0.8775
: 0.8750
: 0.0012
Then highlight Paste and click on Enter
So we get the following output.
So answer of this question is 0.9628
(3.29) (a) Use your calculator to find the number z such that the proportion of observations...
(3.29) (a) Use your calculator to find the number z such that the proportion of observations that are less than z in a standard Normal distribution is 0.21 z (+0.01)- (b) Find the number z such that 32 % of all observations from a standard Normal distribution are greater than z (t0.01)-
Automated manufacturing operations are quite precise but still vary, often with distribution that are close to Normal. The width in inches of slots cut by a milling machine follows approximately the N(0.64,0.0009)N(0.64,0.0009) distribution. The specifications allow slot widths between 0.63980.6398 and 0.64020.6402. What proportion of slots meet these specifications? Answer as a percent.
Please help with these questions. Will give thumbs up rating! Thank you! (1 point) Automated manufacturing operations are quite precise but still vary, often with distribution that are close to Normal. The width in inches of slots cut by a milling machine follows approximately the N(0.73, 0.0011) distribution. The specifications allow slot widths between 0.7298 and 0.7302. What proportion of slots meet these specifications? Answer as a percent: (1 point) A pharmaceutical manufacturer forms tablets by compressing a granular material...
(a) Find ?z such that the proportion of observations that are less than ?z in a standard normal distribution is 0.23.0.23. (Enter your answer rounded to two decimal places.) ?=z= (b) Find ?z such that 23%23% of all observations from a standard normal distribution are greater than ?.z. (Enter your answer rounded to two decimal places.) ?=z=
(a) Find ?z such that the proportion of observations that are less than ?z in a standard normal distribution is 0.39.0.39. (Enter your answer rounded to two decimal places.) Z= (b) Find ?z such that 39%39% of all observations from a standard normal distribution are greater than ?.z. (Enter your answer rounded to two decimal places.) Z=
Use the Normal Table. Use Table A to find the proportion of observations from a standard Normal distribution that satisfies each of the following statements. In each case, sketch a standard Normal curve and shade the area under the curve that is the answer to the question. a) z < −0.32 b) z > −1.56 c) z < 2.04 d) − 0.32 < z < 2.04
2 pts Find the proportion of observations from a standard normal distribution curve that satisfies z-score: -0.1<z< 1.0 Round numerical value to the second decimal place. (Hint: use cumulative standard normal distribution z-table) O 0.62 O 0.38 0.32 O 0.25 O 0.48 0.44 Not enough information to answer the question None of the given numerical values is correct
Find the proportion of observations from a standard normal distribution curve that satisfies z-score: -0.2<z< 0.6 Round numerical value to the second decimal place, (Hint: use cumulative standard normal distribution z-table) None of the given numerical values is correct 0.41 Not enough information to answer the question 0.38 0.23 0.31 0.16 0.69
(c) z > 1.77 (d) -2.25 < z < 1.77 (a) Find the number z such that the proportion of observations that are less than z in a standard Normal distribution is 0.8. (b) Find the number z such that 35% of all observations from a standard Normal distribution are greater than a NCAA rules for athletes. The National Collegiate Athletic Association (NCAA) requires Division I athletes to score at least 820 on the combined
Use the Normal Table. Use Table A to find the proportion of observations from a standard Normal distribution that satisfies each of the following statements. In each case, sketch a standard Normal curve and shade the area under the curve that is the answer to the question. z < −0.42 z > −1.58 z < 2.12 −0.42 < z < 2.12