f1. Assume Tha The ages of children atHappy Times Day care". normally distributedwith a mean of 3.1 Yearswand a standarddeviation of liz years,9 Use The Empirical Ruleto estimate ThePerccentage of children that are between2.5 and 4.4 yearsB what is The 2-score of a child who is I years.$1C Find The Percent of children older Tuan IYears old. The percent will be 30 010 alderThan / Year oldr

Given : Let X : Ages of children at Happy times is normally distributed with Mean (μ) = 3.7 Standard…

Answered: Assume Tha The ages of children 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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If bone density is normally distributed with 0 for the mean and 1 for the standard deviation, what is the probaility that a population has a bone density between the z scores of -0.84 and 1.2?
Please show your all work with step by step and no use excel formulas D Dax limited installed a new safety equipment in order to reduce the number of person hours lost as a result of industrial accident. In a test to of the effectiveness of the equipment, a random sample of 50 departments was chosen. The number of person- hours lost in the month prior to and the month after the installation of the safety equipment was recorded. The percentage change was calculated and recorded. Assume that the population standard deviation is 5 and sample mean is -1.2. Can we infer at the 10% significance level that the new safety equipment is effective? Required: Formulate hypotheses Decide the suitable test statistics and justify your selection. Calculate the value of the relevant test statistics and identify the P-value Based on the test statistics in part (III), decide the decision criteria. Make the final…
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a complex trait in a large population has a phenotypic values that are distributed according to a normal distribution the mean is 80 and the standard deviation is 12 what percent of the population has a phenotypic value less than 104
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13 q3
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Hi, I have the answers for A and B, I just need help finding Part C. Suppose that the distance of fly balls hit to the outfield (in baseball) is normally distributed with a mean of 254 feet and a standard deviation of 54 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-n(254, 7.71) Round your standard deviation to two decimal places. Part (b) What is the probability that the 49 balls traveled an average of less than 242 feet? .0606 (Round your answer to four decimal places.) Part (c) Find the 60th percentile of the distribution of the average of 49 fly balls. (Round your answer to two decimal places.)

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