A random variable is normally distributed with a mean of 30 and a standard deviation of 4. If an observation is randomly selected from the distribution, what value will 6.3% of the observations be below? a. Not enough information given b. 25.75 с. 29.75 d. None of the suggested answers are correct е. 23.88

A random variable is normally distributed with a mean of 30 and a standard deviation of 4. If an observation is randomly selected from the distribution, what value will 6.3% of the observations be below? a. Not enough information given b. 25.75 с. 29.75 d. None of the suggested answers are correct е. 23.88

Name: A random variable is normally distributed witha mean of 30 and a stan
Uploaded: 2024-03-20T07:07:12.000Z
Channel: Bartleby
Description: A random variable is normally distributed witha mean of 30 and a standard deviation of 4. Ifan observation is randomly selected from thedistribution, what value will 6.3% of theobservations be below?a. Not enough information givenb. 25.75C. 29.75d.

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

See similar textbooks

Similar questions

a researcher wants to determine the average amount of minutes it takes for the medicine to reduce the pain for adult males. The researcher contacted 107 subjects to participate in the study, n=but only got results from 79 of the subjects. The average time it took for the medicine to reduce headache pain of these subjects was 27 minutes. What is the population? What is the sample? What tis the parameter? What is the symbol for this parameter? What is the statistics? What is the symbol for this statistics?
Titles Notation v sample mean а. Ро coefficient of determination b. N C. s2 d. V population standard deviation d. o sample standard deviation e. o V sample size f. s mean of a sampling distribution of sample means g. r h. a population variance i. l the proportion found in Ho j. p sample proportion k. x? correlation coefficient l. po population mean m. OF population size n. Ha o. p2 the mean found in the null hypothesis р. р v chi-squared 9. п
In one of the Stat 2 sections, the students in the section have an average height of 64 inches, with a standard deviation of 3 inches. The GSI happens to be 68 inches. Express the height of the GSI in standard units, relative to the students in the section. Choose the answer below that is closest. Group of answer choices 1.67 3.0 1.5 1.33 4.0 PreviousNext
Assume that a randomly selected subject is given a bone density test. Bone density test scores are normally distributed with a mean of 0 and a standard deviation of 1. Draw a graph and find P3, the 13th percentile. This is the bone density score separating the bottom 13% from the top 87%. 13- * ..* Which graph represents P3? Choose the correct graph below. OA. B. C. OD. се urces P13 P. 13 P13 ns The bone density score corresponding to P,3 is (Round to two decimal places as needed.) on Tool Vi (1,0) More Next Policy | Statcrunch Activate V vate WE 104 梦 @ ^ E O A 4) 11/10 e here to search hp 「曲需

The average person owns about 175 music cds. The standard deviation is about 37 music cds. If Tori has 186 music cds, what is her collection's z-score. Show your work and round your answer to the nearest thousandth. Use the paperclip button below to attach files. Student can enter max 3500 characters BIUE earch 73°F Sunny ^ F3 F4 FS F6 F7 F9 コ F10 F11 F12 Prt Sc Insert Del %23 24 & 大 3 7\ 8 Backspace E R T. Y U P F K L Enter Alt Ctrl
B Choosing a topic Sk.. For data that is not normally distributed we can't use z-scores. However, there is an equation that works on any distribution. It's called Chebyshev's formula. The formula 1 where p is the minimum percentage of scores that fall within k k2 is p = 1 - standard deviations on both sides of the mean. Use this formula to answer the following questions. a) If you have scores and you don't know if they are normally distributed, find the minimum percentage of scores that fall within 2.2 standard deviations on both sides of the mean? b) If you have scores that are normally distributed, find the percentage of scores that fall within 2.2 standard deviations on both sides of the mean? c) If you have scores and you don't know if they are normally distributed, how many standard deviations on both sides of the mean do we need to go to have 64 percent of the scores? Note: To answer part c you will need to solve the equation for k.
There are two sets of numbers. Set A is 5, 5, 5, 5. & Set B is 4, 5, 6, 7. Without doing any calculations, what can you say about the standard deviations of the two sets of numbers? A. Sets A and B have about the same standard deviation. B. The only way to compare the standard deviations is to calculate them. C. Set A has a smaller standard deviation. D. Set B has a smaller standard deviation.