Asked Mar 19, 2020

The area under the standard normal curve from zero to z is 0.4505 and z is positive. The value of z is



Expert Answer

Step 1

Normal distribution is a symmetrical distribution so the area is equally distributed on both tails of the distribution.

Statistics homework question answer, step 1, image 1


Step 2

The positive z value is obtained below:

Procedure for finding the z-value is listed below:

  1. From the table of standard normal distribution, locate the probability value of 0.9505.
  2. Move left until the first column is reached. Note the value as 1.6
  3. Move upward until the top row is reached. Note the value as 0.05.
  4. The intersection of the row and column values gives the area to the two tail of...

Want to see the full answer?

See Solution

Check out a sample Q&A here.

Want to see this answer and more?

Solutions are written by subject experts who are available 24/7. Questions are typically answered within 1 hour.*

See Solution
*Response times may vary by subject and question.

Related Statistics Q&A

Find answers to questions asked by student like you
Show more Q&A

Q: Speed Dating  Some of the nonparametric methods in this chapter use ranks of data. Find the ranks co...

A: The data shows that the attractiveness ratings of males by females who participated in a speed datin...


Q: The length, X, of a fish from a particular mountain lake in Idaho is normally distributed with μ=9.4...

A: Click to see the answer


Q: please find the mean, variance and standard deviation

A: From the given information, Number of accidents X 0 1 2 3 4 P (X) 0.4 0.2 0....


Q: Heights of Fathers and Sons Listed below are heights (in.) of fathers and their first sons. The data...

A: Click to see the answer


Q: A box contains three cards, labeled 1, 2, and 3. Two cards are chosen at random, with the first card...

A: Note: Hey, since there are multiple subparts are posted, we will answer first three subparts for you...


Q: A fair coin is tossed five times. Which sequence is more likely, HTTHH or HHHHH? Or are they equally...

A: From the given information, Sample space = {HHHHH, HHHHT, HHHTH,…………………..TTTTT} Probability of succe...


Q: Part II. Answer the question below. Back up your answer with your knowledge of experimental design. ...

A: Paired t test: The paired t test is used to test whether the mean difference between the two samples...


Q: Two extrusion machines that manufacture steel rods are being compared. In a sample of 1000 rods take...

A: Solution: a. State the hypotheses. Null hypothesis: That is, there is no difference in the proporti...


Q: A consumer advocacy group is doing a large study on car rental practices. Among other things, the co...

A: From the given information, it is to test whether the mean monthly mileage of cars rented in the U.S...