2) An Izod impact test was performed on 19 specimens of PVC pipe, the standard deviation was 0.25.We wish to test the hypothesis that Ho: o 0.10 against H₁: >0.10.(a) State any necessary assumption about the underlying distribution of the data.(b) Calculate the test statistic value.(c) What is the critical value? Use a= 0.01(d) Is it possible to reject Ho hypothesis at the 0.01 level of significance? Explain(e) What is the P-value?

Given that Sample size n =19 Sample standard deviation =0.25 Population standard deviation =0.10…

Answered: 2) An Izod impact test was performed on…

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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The average size of a farm in one county is 162 acres with a standard deviation of 38 acres. The average size of a farm in a second county is 182 acres with a standard deviation of 16 acres. Assume the data were obtained from two samples that had 30 farms each. Can it be concluded that the average size of the farms in the two counties is different? (Let α = 0.05) First , choose which hypothesis statements is correct. T-stat = Round to 2 decimal places. P-value = Decision: Type Retain Ho or Reject Ho
Based on long-term investigation, researchers have suggested that the acidity (pH) of rainfall in the Shenandoah Mountains can be described by a normal distribution, where the mean pH of rainfall is 4.9 with a standard deviation of 0.6. (a) Draw a normal curve with the parameters labeled. (b) At what values are the inflection points? Enter the smaller value first. and (c) What is the probability that a storm produces a rainfall with a pH over 5.5? = (d) What is the probability that a storm produces a rainfall with a pH over 4? = (e) What is the probability that a storm produces a rainfall with a pH less than 6.3? = (f) What is the probability that a storm produces a rainfall with a pH between 3.5 and 5.5? = (g) Find the pH level of rainfall at the 75th, = MacBook Pro
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