1. The probability that a truck will be going over the speed limit on I-77 South between Dobson and Elkin is about 75%. Suppose a random sample of five trucks are observedon this stretch of I-77. а. С.Find the standard deviation. Round your answer to 2 decimal places.b. d.Find the probability that exactly 3 of the observed trucks are speeding.с. е.Find the probability that less than 3 of the observed trucks are speeding.

Given problem Given that The probability that a truck will be going over the speed limit on I-77…

Answered: a. C. Find the standard deviation.…

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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For a certain group of individuals, the average heart rate is 74 beats per minute. Assume the variable is normally distributed and the standard deviation is 4 beats per minute. If a subject is selected at random, find the probability that the person has the following heart rate. Use a graphing calculator. Round the answers to four decimal places. Less than 78 beats per minute =
English Philippines) e to search Given Samples A and B below, Sample A: Sample B: Sample A: - 3.2 4.6 Sample B: - a. Calculate the mean and standard deviation for each sample. 2.1 2.6 Sample B: CV- 0.00 0.00 4.5 4.5 2.0 3.2 3.6 2.8 SA 0.00 96 50 11 b. Calculate the coefficient of variation for each sample. Sample A: CV. - 0.00 % E Round to two decimal places if necessari c. Which sample is more variable? 0.00 0.00 2.6 3.1 Sample A Sample B Neither sample is more variable than the other 3.8 4.1 3.8 4.9 3.5 4.6 land I
Sketch the distribution and shade the area corresponding to the probability you want to find. Then. find the probability. The average commute time in Orange County is normally distributed and 25% of commuters take more than 30 minutes to commute. The standard deviation of such commutes is 6 minutes. A. What is the average commute time? B. What percentage of commuters takes less than 15 minutes to commute? C. What percentage of commuters takes between 25 and 35 minutes to commute?
Thirty percent of people did not visit their doctor's, offices last year. Let x be the number of adults in a random sample of 12 adults who did not visit their doctors’ offices last year. The standard deviation of the probability distribution of x is approximately Could you show the steps and equations used, please?
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a. C. Find the standard deviation. Round your answer to 2 decimal places. b. d. Find the probability that exactly 3 of the observed trucks are speeding. c. e. Find the probability that less than 3 of the observed trucks are speeding.