Please answer within 30min thanks. There are 225 dogs that participated at the National Dog Show that weigh an average of 5 kilos, with a standarddeviation of 3.5 kilos. If 30 dogs are selected at random, what is the probability they have an average weightof greater than 4 kilos and less than 7 kilos?(A)BD99.91%5.97%94.03%5.88%

given data n = 30 μ = 5σ = 3.5P(4<x¯<7) = ?

Answered: There are 225 dogs that participated at…

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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7.2.13-T A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older subjects. Before treatment, 19 subjects had a mean wake time of 102.0 min. After treatment, the 19 subjects had a mean wake time of 96.3 min and a standard deviation of 23.9 min. Assume that the 19 sample values appear to be from a normally distributed population and construct a 95% confidence interval estimate of the mean wake time for a population with drug treatments. What does the result suggest about the mean wake time of 102.0 min before the treatment? Does the drug appear to be effective? Construct the 95% confidence interval estimate of the mean wake time for a population with the treatment. |min < u< min (Round to one decimal place as needed.)
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