Questions1. There is an assumption that there is no significant differencebetween boys and girls with respect to intelligence. Tests areconducted on two groups and the following are the observation.Validate the claim with 5% level of significanceMeanGirlsBoys7573Standard SizeDeviation810100602. Why do you think any serious researcher would use the samplemean as a measure of center to estimate for the populationparameter at most times?3. Lifetimes of batteries in a certain application are normallydistributed with mean 50 hours and standard deviation 5 hours. Findthe probability that a randomly chosen battery lasts between 42 and52 hours.4. State the critical value(s) of t for an independent groups t test foran alpha level of 0.5 under the following conditions:Ho:₁ = H₂, H₁:₂ #M₂ and n1 = 10, n₂ = 10.2

Given assumption: There is no significant difference between boys and girls with respect to…

Answered: Questions 1. There is an assumption…

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...

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