107 827
Assignments Done
100%
Successfully Done
In April 2025
In April 2025
Your physics assignments can be a real challenge, and the due date can be really close — feel free to use our assistance and get the desired result.
Physics
Be sure that math assignments completed by our experts will be error-free and done according to your instructions specified in the submitted order form.
Math
Our experts will gladly share their knowledge and help you with programming projects. Keep up with the world’s newest programming trends.
Programming
Answer to Question #53370 in Statistics and Probability for Bob
Question #53370
Given z is a standard normal random variable, answer questions 1 through 4.
1. p(z = 2.3) is
a. .1056.
b. 0.
c. .8944.
d. .3944.
2. p(z ≥ -1.84) is
a. .5474.
b. 0.
c. .0329.
d. .9671.
3. p(z ≤ 1.4) is
a. .0808.
b. .9192.
c. .9927.
d. 0.
4. p(.5 ≤ z ≤ 2.9) is
a. 0.
b. .6915.
c. .3066.
d. 9981.
1. p(z = 2.3) is
a. .1056.
b. 0.
c. .8944.
d. .3944.
2. p(z ≥ -1.84) is
a. .5474.
b. 0.
c. .0329.
d. .9671.
3. p(z ≤ 1.4) is
a. .0808.
b. .9192.
c. .9927.
d. 0.
4. p(.5 ≤ z ≤ 2.9) is
a. 0.
b. .6915.
c. .3066.
d. 9981.
Expert's answer
Learn more about our help with Assignments: Statistics and Probability
Comments
The solution uses the standard normal distribution table in calculations (see https://math.arizona.edu/~rsims/ma464/standardnormaltable.pdf). There exist normal distribution calculators (for example, https://www.mathportal.org/calculators/statistics-calculator/normal-distribution-calculator.php). In this problem the standard normal random variable is given, hence the mean is 0 and the standard deviation is 1.
how do you punch the answer into the calculator?
Leave a comment