Homework Answers
We want to find, P(Z < 2.12)
Using standard normal z-table we get, probability corresponding z-score is, 0.98300
Therefore, P(Z < z) = 0.98300
Answer: G) None of these
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Using the following standard normal density curve, determine what is the probability thata random variable z...
1. Using the following uniform density curve, determine what is the probability that a random variable...
1. Using the following uniform density curve, determine what is
the probability that a random variable has a value less than
44?
SELECT ALL APPLICABLE CHOICES
A)
44.444%44.444%
B)
56.222%56.222%
C)
53.889%53.889%
D)
30.556%30.556%
E)
75.556%75.556%
F)
63.556%63.556%
G)
55.556%55.556%
None of These
2.
Using the following uniform density curve, determine what is the
probability that a random variable has a value between 33 and 1212
?
SELECT ALL APPLICABLE CHOICES
A)
50.909%50.909%
B)
44.909%44.909%
C)
40.909%40.909%
D)
30.909%30.909%
E)...
Using the following uniform density curve. determine what is the probability that a random variable has...
Using the following uniform density curve. determine what is the probability that a random variable has a value between 3 and 12 A) B) 50.909% 44.909% 12 C) D) 10 40.909% 30.909% E) F) 42.242% 39.909% $ 1015205G) None of These
given that z is a standard normal random variable what is the probability that z ≥...
given that z is a standard normal random variable what is the probability that z ≥ -2.12? a. 0.966 b. 0.017 c.4830 0.9830 From a population of 200 elements, a sample of 49 elements is selected. It is determined that the sample mean is 56 and the sample standard deviation is 14. The standard error of the mean is a. 3 b. 2 c. greater than 2 d. less than 2
Using the following uniform density curve, determine what is the probability that a random variable has...
Using the following uniform density curve, determine what is the probability that a random variable has a value less than 4? 4 6 8 10 1
If a random variable has the standard normal distribution, find the probability that it assumes a...
If a random variable has the standard normal distribution, find the probability that it assumes a value (a) Less than 2.00 (b) Less than -1.96 (c) Greater than 2.58 (d) Greater than -2.33 (e) Between 0.00 and 1.00 (f) Between 0.58 and 2.12 (g) Between -1.65 and -0.84 (h) Between -2.42 and 1.86
19. Given that z is a standard normal random variable, what is the probability that z...
19. Given that z is a standard normal random variable, what is the probability that z ≥ -2.12? Select one: a. 0.4830 b. 0.9830 c. 0.017 d. 0.966
3)using excel and Given that z is a standard normal random variable, what is the value...
3)using excel and Given that z is a standard normal random variable, what is the value for z0 if: a. P(z > z0) = 0.12 b. P(z < z0) = 0.2 c. P(z > z0) = 0.25 d. P(z < z0) = 0.3
Let Z be a standard normal random variable such that its probability density function is fz(z)...
Let Z be a standard normal random variable such that its probability density function is fz(z) = (1/sqrt(2pi))exp((-z^2)/2) find the probability density function of Z^2
5. Let Z be a standard normal random variable. Use the table on page 848 of...
5. Let Z be a standard normal random variable. Use the table on page 848 of the textbook to evaluate the following. (a) P(Z < 0.04) (b) P (0.09 < 20 S 0.81) (c) P(Z <1.3) (d) P(-2 <7 <1) (e) P(Z -0.1) (Z -0.2) (Z -0.3) (Z-0.4) > 0)
a) Find the value of the probability of the standard normal variable Z corresponding to the...
a) Find the value of the probability of the standard normal variable Z corresponding to the shaded area under the standard normal curve. (Round your answer to four decimal places. You may need to use the appropriate table in the Appendix of Tables to answer this question.) P(Z > 1.07) = b) Find the value of the probability of the standard normal variable Z corresponding to the shaded area under the standard normal curve. (Round your answer to four decimal...
1. Using the following uniform density curve, determine what is
the probability that a random variable has a value less than
44?
SELECT ALL APPLICABLE CHOICES
A)
44.444%44.444%
B)
56.222%56.222%
C)
53.889%53.889%
D)
30.556%30.556%
E)
75.556%75.556%
F)
63.556%63.556%
G)
55.556%55.556%
None of These
2.
Using the following uniform density curve, determine what is the
probability that a random variable has a value between 33 and 1212
?
SELECT ALL APPLICABLE CHOICES
A)
50.909%50.909%
B)
44.909%44.909%
C)
40.909%40.909%
D)
30.909%30.909%
E)...
Using the following uniform density curve. determine what is the probability that a random variable has a value between 3 and 12 A) B) 50.909% 44.909% 12 C) D) 10 40.909% 30.909% E) F) 42.242% 39.909% $ 1015205G) None of These
Using the following uniform density curve, determine what is the probability that a random variable has a value less than 4? 4 6 8 10 1
5. Let Z be a standard normal random variable. Use the table on page 848 of the textbook to evaluate the following. (a) P(Z < 0.04) (b) P (0.09 < 20 S 0.81) (c) P(Z <1.3) (d) P(-2 <7 <1) (e) P(Z -0.1) (Z -0.2) (Z -0.3) (Z-0.4) > 0)
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