Ans:
The exected value of the random variable z is: E(z) =
=8.88
So the exected value of the random variable is option D) 8.88
Find the expected value for the random variable. Z 3 6 9 12 15 P(z) 0.14...
This Question: 3 pts 300 Find the expected value for the random variable. 3 6 9 12 15 N P(z) 0.14 0.24 0.36 0.16 0.10 O A. 8.52 OB .32 C. 9 OD. 5.85
3. Let Z be a continuous random variable with Z-N(0,1). (a) Find the value of P(Z <-0.47). (b) Find the value of P(Z < 2.00). Note denotes the absolute value function. (c) Find b such that P(Z > b) = 0.9382. (d) Find the 27th percentile. (e) Find the value of the critical value 20.05-
3. Let Z be a continuous random variable with Z~ N(0, 1) (a) Find the value of P(Z -0.47) (b) Find the value of P(|Z|< 2.00). Note | denotes the absolute value function. (c) Find b such that P(Z > b) = 0.9382 (d) Find the 27th percentile. (e) Find the value of the critical value zo.05
3. Let Z be a continuous random variable with Z~ N(0, 1) (a) Find the value of P(Z < -0.47) (b) Find the value of P(|Z| < 2.00). Note denotes the absolute value function (c) Find b such that P(Z > b) = 0.9382 (d) Find the 27th percentile. (e) Find the value of the critical value z0.05
6. Find the expected value of the random variable: 2 الدها X P(x) 0 0.32 4 0.10 0.23 0.3 0.05 A) 1.38 B) 2.22 C) 2.09 D) 1.42 E) None of the Above 7. Identify which of these types of sampling is used: random, stratified, systematic, cluster, convenience. 42 male and 33 female dogs at a local rescue are chosen, and 12males and 12 females are randomly chosen from these groups. A) Stratified B) Cluster C) Convenience D) Stratified E)...
Homework 9.1 Find the expected value for each random variable x 1 3 5 7 P(x) 0.1 0.5 0.2 0.2 y 1 15 30 40 P(y) 0.15 0.20 0.40 0.25 z 0 2 4 8 16 P(z) 0.21 0.24 0.21 0.17 .17
1 3 5 6 P(a) 0.03 0.14 0.31 0.33 0.15 0.04 11. P(2S< 5) is about (a) 0.22 (b) 0.78 (c) 0.17 (d) 0.50 (e) 0.52 12. The mean of the random variable r is about 3.55 (b) 0.59 (c) 3.00 (d) 4.12 (e) 3.96 13. The standard deviation of the random variable a is about (a) 1.25 (b) 1.12 (c) 13.85 (d) 3.55 (e) 12.60 23. Nielsen wants to estimate the percentage that are tuned to the Tonight Show....
If Z is a standard normal random variable, then find: a. P(Z ≤ z), where z= 1.24 b. P(a ≤ Z ≤b), where a= 0.55 and b=1.33 c. find P(Z ≥ z), where z= 0.38 d. A value for z for which P(Z > z) = 0.8264
. Assignment of probability p, to each value of the Continuous Random Variable x. B. Assignment of frequency f, to each value of the Discrete Random Variable x. C. Assignment of probability p, to each value of the Discrete Random Variable x. D. Assignment of frequency f, to each value of the Continuous Random Variable x. Given the discrete probability distribution in the table below, answer questions 12-15 23 4 Po)10.12a a-0.11 0.28 12. Calculate a A. 0.46 B. 0.33...
Find the value of the standard normal random variable z, called z0 such that: (a) P(z≤z0)=0.7247 z0= (b) P(−z0≤z≤z0)=0.504 z0= (c) P(−z0≤z≤z0)=0.41 z0= (d) P(z≥z0)=0.0112 z0= (e) P(−z0≤z≤0)=0.1587 z0= (f) P(−1.21≤z≤z0)=0.6928 z0=