The weights of newborn children in the United States vary according to the normal distribution with mean 7.5pounds and standard deviation 1.25 pounds. An article in the The Wall Street Journal claims that the averagebirth weight is decreasing over time.Steady DeclineChange in the average birthweight of babies born in theU.S. since 1990, in ounces-0.5-1.0-1.5-2.0Cer'051990195'00*Born between 37 and 41 weeks and notincluding multiple birthsSource: Obstetrics and Gynecology A local hospital wanted to see if the claim was true and randomly sampled 24 baby's weights and found anaverage weight of 7.4 pounds. Test the claim using a 5% level of significance that the mean weight significantlysmaller than the national average of 7.5 pounds. Use the population standard deviation of 1.25 pounds. Giveanswer to at least 4 decimal places.What are the correct hypotheses? (Select the correct symbols.)Ho: Select an answer ✓Test Statistic =H₁: Select an answer ✓ ? ✓Based on the hypotheses, find the following:p-value? ✓=poundspoundsThe correct decision is to Select an answer

given data claim : μ<7.5n = 24x¯ = 7.4σ = 1.25α = 0.05

Answered: A local hospital wanted to see if the…

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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A manufacturer of bolts has a quality-control policy that requires it to destroy any bolts that are more than 4 standard deviations from the mean. The quality control engineer knows that the bolts coming off the assembly line have mean length of 13 cm with a standard deviation of 0.05 cm. For what lengths will a bolt be destroyed? Select the correct choice below and fill in the answer box(es) to complete your choice. (Round to one decimal place as needed.) OA. A bolt will be destroyed if the length is less than OB. A bolt will be destroyed if the length is greater than cm. OC. A bolt will be destroyed if the length is between OD. A bolt will be destroyed if the length is less than cm. KOTE cm and cm. cm or greater than cm.
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