Question 2 of 6<>- 1Current Attempt in ProgressDetermine the mean, the variance, and the standard deviation of the following discrete distribution.P(x)10.2190.31430.1744.0.1560.137(Round the intermediate values and final answers to 3 decimal places, e.g. 2.153.)Mean, u =Variance, o? =Standard deviation, o =Attempts: 0 of 3 uSave for Laterétv JMAR12750,109

We use the given probability distribution table to find the solution.

Answered: Current Attempt in Progress Determine…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Suppose that the distance of fly balls hit to the outfield (in baseball) is normally distributed with a mean of 236 feet and a standard deviation of 44 feet. We randomly sample 49 fly balls. Part (a) If X =average distance in feet for 49 fly balls, then give the distribution of X. Round your standard deviation to two decimal places. X ____, ________,_______ ~ . Part (b) What is the probability that the 49 balls traveled an average of less than 226 feet? (Round your answer to four decimal places.)Sketch the graph. Scale the horizontal axis for X. Shade the region corresponding to the probability. Part (c) Find the 70th percentile of the distribution of the average of 49 fly balls. (Round your answer to two decimal places.) ft †
This assignment is worth 1 points. The extra point will be added to your overall course grade. For example: if you receive an 88% in the course you can receive up to 1 point giving you a new score of 89%. The following rubric will be used. 0.25 point for drawing the normal distribution curve with the mean value labeled on the curve and the appropriate area shaded. 0.25 point for determining the value of the standard deviation of the sample mean. 0.5 point for finding the correct probability. All work must be shown in order to receive any credit. Please upload your completed assignment here. The length of time taken on the SAT for a group of students is normally distributed with a mean of 2.5 hours and a standard deviation of 0.25 hours. A sample size of n = 60 is drawn randomly from the population. Find the probability that the sample mean is between two hours and three hours.
Exam grades: Scores on a statistics final in a large class were normally distributed with a mean of 72 and a standard deviation of 8. Use the T1-84 PLUS calculator to answer the following. Round the answers to at least two decimals. (a) Find the 32nd percentile of the scores.. (b) Find the 67 percentile of the scores. (c) The instructor wants to give an A to the students whose scores were in the top 8% of the class. What is the miniìmum score needed to get an A? (d) Between what two values are the middle 70% of the scores? (Enter the smaller number in the first box.)
Data table 59280 15 19 18 14 18 15 19 Shoppers' Ages 17 22 Print 19 18 18 16 17 19 Done 17 14 17 14
what percent of the area under the normal distribution falls bewteen 115 and 130? The Standard deviation is 16 and the mean is 100. I know that I do (115-100)/16 and (130-100)/16 to get the z-scores 0.94 and 1.89. The percentages I get are 32.64 and 47.06. My question is, what do I do with those percentages now? Do I subtract 47.06% from 32.64%?
"The number of accidents..." please help with i, ii, and iii
#20 psych stats: standard deviation show full work
Attached here is the question and answers? Scores on a standardized test are normally distributed with a mean of 100 and a standard deviation of 12. An individualʹs test score is found to be 125. Find the z-score corresponding to this value. Group of answer choices -0.48 2.08 0.48 -2.08
The amount of fill in a half-liter (500 ml) soft drink bottle is normally distributed. The process has a standard deviation of 5 ml. The mean is adjustable.(a) Where should the mean be set to ensure a 95 percent probability that a half-liter bottle will not be underfilled? (Round your answer to 2 decimal places.) Mean_________ml (b) Where should the mean be set to ensure a 99 percent probability that a half-liter bottle will not be underfilled? (Round your answer to 2 decimal places.) Mean______ml (c)Where should the mean be set to ensure a 99.9 percent probability that a half-liter bottle will not be underfilled? (Round your answer to 2 decimal places.) Mean______ml
Breaking Strength of Steel Cable The average breaking strength of a certain brand of steel cable is 2000pounds, with a standard deviation of 100pounds. A sample of 20 cables is selected and tested. Find the sample mean that will cut off the upper 91% of all samples of size 20 taken from the population. Assume the variable is normally distributed. Round intermediate z-value calculations to 2 decimal places and round the final answer to at least 2 decimal places. The sample mean that will cut off the upper 91% of all samples of size 20 is ____ pounds.
Consider the following sample data. Sample A: 11, 22, 33 Sample B: 81, 92, 103 Sample C: 1,100; 1,111; 1,122 (a) Find the mean and standard deviation for each sample. Sample A: Sample B: Sample C: Mean Sample Standard Deviation (b) What does this exercise show about the standard deviation? multiple choice The idea is to illustrate that the standard deviation is not a function of the value of the mean. The idea is to illustrate that the standard deviation is a function of the value of the mean.

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