Let Z be the standard normal variable. Find the values of z if z satisfies the given probabilities. (Round your answer 2 decimal places)
A: P(Z > z) = .9484
z = ?
B: P(-z < Z < z)= .8294
z = ?
(A)
Answer: z = -1.63
(B)
Answer: z = 1.37
Let Z be the standard normal variable. Find the values of z if z satisfies the...
1) Let Z be the standard normal variable. Find the values of z if z satisfies the given probabilities. (Round your answers to two decimal places.) (a) P(Z > z) = 0.9706 z = ? P(−z < Z < z) = 0.8164 z = ? 2) Suppose X is a normal random variable with μ = 350 and σ = 20. Find the values of the following probabilities. (Round your answers to four decimal places.) (a) P(X < 405) = (b) P(370...
Let Z be the standard normal variable. Find z if z satisfies the given value. (Round your answer to two decimal places.) P(−z < Z < z) = 0.9802
Let Z be the standard normal variable. Find z if z satisfies the given value. (Round your answer to two decimal places.) P(Z > 2) = 0.9535 z = To be eligible for further consideration, applicants for certain civil service positions must first pass a written qualifying examination on which a score of 75 or more must be obtained. In a recent examination, it was found that the scores were normally distributed with a mean of 70 points and a...
Find the following z values for the standard normal variable Z. (Negative values should be indicated by a minus sign. Round your answers to 2 decimal places.) P(Z z) 0.8605 a b. P(Z>z) 0.8018 c. P(-zs Z z) = 0.86 d. P(0 Zz) = 0.2235 Find the following z values for the standard normal variable Z. (Negative values should be indicated by a minus sign. Round your answers to 2 decimal places.) P(Z z) 0.8605 a b. P(Z>z) 0.8018 c....
find the value z of a standard Normal variable that satisfies each of the given conditions. Use the value of z from Table A that comes closest to satisfying the condition. In each case, sketch a standard Normal curve with your value of z marked on the axis. Find the point z with 68% of the observations falling below it. Round to two decimal places Find the point z with 19% of the observations falling above it. Round to two...
Find the value 2* that satisfies each of the following probabilities for a standard normal random variable Z. (Round your answers to two decimal places.) (a) P(Z sz*) - 0.0485 (b) PIZ sz*) = 0.9515 (c) P(-x* SZ SZ") - 0.903
Find the following z values for the standard normal variable Z. (Negative values should be indicated by a minus sign. Round your answers to 2 decimal places.) a. P(Z ≤ z) = 0.8692 b. P(Z > z) = 0.7894 c. P(−z ≤ Z ≤ z) = 0.66 d. P(0 ≤ Z ≤ z) = 0.3843
Use Table A to find the value z of a standard Normal variable that satisfies each of the following conditions. Use the value of z from Table A that comes closest to satisfying the condition. In each case, sketch a standard Normal curve with your value of z marked on the axis. (a) Find the point z with 68% of the observations falling below it. Enter your answer rounded to two decimal places. (b) Find the point z with 19%...
Use Table A to find the value z of a standard Normal variable that satisfies each of the following conditions. Use the value of z from Table A that comes closest to satisfying the condition. In each case, sketch a standard Normal curve with your value of z marked on the axis. (a) Find the point z with 68% of the observations falling below it. Enter your answer rounded to two decimal places. (b) Find the point z with 23%...
2. Given that z is a standard normal random variable, compute the following probabilities. P(-1 ≤ z ≤ 0) (Round to four decimal places) Answer P(-1.5 ≤ z ≤ 0) (Round to four decimal places) Answer P(-2 < z < 0) (Round to four decimal places) Answer P(-2.5 < z < 0) (Round to four decimal places) Answer P(-3 ≤ z ≤ 0) (Round to four decimal places) 3. Given that z is a standard normal random variable, compute the...