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By using the standard normal table we can find a percentage easily.
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10. What percent of a standard Normal model is found in each region? Draw a picture...
What percent of a standard normal distribution is found in each region below? Be sure to draw a graph a) Z>-1.59 b) -0.4<z<1.8
What percent of a standard normal distribution N(µ = 0,σ = 1) is found in each region? Be sure to draw a graph. A. |Z| > 2
| | 5 of 9 (9 complete) & Section 8.3 Exercise 16 What percent of a standard Normal model is tound in each region? Draw a picture first. a) z 1.5 b) z <1.65 c) -1.05<z s 1.2 d) z 1.75 a) Choose the correct graph of z 1.5 O A. O B. C. Enter your answer in the answer box and then click Check Answer. parts remaining Clear All Question 9 (0.50/1) Type here to search
In a standard Normal model, what value(s) of z cut(s) off the region described? Don't forget to draw a picture. a) the highest 25% b) the highest 97% c) the lowest 30% d) the middle 90%
Find these probabilities for a standard normal random variable Z. Be sure to draw a picture to check your calculations. Use the normal table or software, (a) P(Z < 1.2) (d) P(Z >0.4) (b) P(Z > -1) (e) P(-1SZs1.2) (c) P(|<1.5)
1. 2. 3. In a Standard Normal model, what value(s) of z cut(s) off the region described? Don't forget to draw a picture. REGION: The middle 90% 10 A 0.842 © B -0.675 O C -1.881 -1.881 0 D -1.645 to 1.645 Police department salaries in San Francisco have a mean of $90,702 and an sd of $45,321. A chief of police's salary has a z-score of z = 4.84. Interpret this z-score. O A The chief of police makes...
1. On the below problems, you should do 4 things: A) Draw a picture and shade the area you are asked to find, B) Draw an equivalent picture that represents the situation on the standard normal curve (carefully label places on the horizontal axis for A and B!), C) Find the area using the Z-table in your book (no work to show here), and D) write two lines of R code − one that finds the area on the original...
8 StatCrunch. IHE Normal Distribution For 1-3, draw the standard normal curve for each and shade the appropriate region. 1. The area to the left of z 1.04 2. The area between z =-34 and z-1.03 3. Find the area of zz0- 4. Dunlop Tires manufactures a tire with a lifetime that approximately follows a normal distribution with a mean of 70,000 miles and a standard deviation of 4400 miles. a. What proportion of the tires will last for a...
. (Ch 1.4) Draw a picture that illustrates each of the percentiles associated with standard normal distribution, and find the value of each percentile. Use correct probability notation that expresses each value. (a) 91st percentile. (b) 22nd percentile. (c) 99.9th percentile
consider a standard normal distribution to answer the following question .draw the normal curve, shade the appropriate region and solve the following question a ) P( Z < -1.50 ) b ) P (- 1.00 < Z < 0.50 ) c ) what is the Z score that separates the upper 3% from the lower 97% of a normal distribution