No-fines concrete, made from a uniformly graded coarse eggregate and a cement-water paste, is beneficial in areas prone to excessive rainfall because of Its excellernt drainage properties. Thearticie "Pavemant Thicknass Dasign for No-FInes Cancrata Parking Lots,'t amployed a last squaras analysis in studying haw y - porcaity ('N) Is relatad to x - unit weight (pcf) in concretespecimens. Consider the fallowing representative data.* 98.9 101.0 102.5 102.9 105.3 107.1 108.5 110.7y 20.6 27.627.125.022.721.421.019.9* 111.9 112.3 113.5 113.7 114.9 115.2 120.217.318.015.916.613.213.410.7A USE SALTRelevant summary quentities are x; = 1638.6 r, = 299.3, x? = 179,526.04, xy, = 32,224.69, y = 6405.39. The accompanying data on x= current density (mA/cm') and y= rate of deposition (um/min) appeared in an articie. Do you agree with the claim by the article's author that "a linearrelationship was obtained from the tin-lead rate of deposition as a function of current density"?40 60 a0Y 0.09 1.10 1.06 2.0720Find the value of 2. (Round your answar to three decimal placas.)

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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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Secuon 7.1- MAI 2AE Applied s X https://learn.zybooks.com/zybook/MAT-240-J4373-OL-TRAD-UG.22EW4/chapter/7/section/1?content_resource_id=5. A Q 18 AT 240: Applied Statistics home >7.1: Hypothesis test for a population proportion E zyBooks catalog Help/FAQ 8 LaShonda Check Next Feedback? CHALLENGE 7.1.3: Hypothesis test for a population proportion. ACTIVITY 387674.1891676 qdzay? Jump to level 1 An airline company is interested in improving customer satisfaction rate from the 50% currently claimed. The company sponsored a survey of 257 customers and found that 141 customers were satisfied. Determine whether sufficient evidence exists that the customer satisfaction rate is higher than the claim by the company. What is the test statistic z? Ex: 1.23 What is the p-value? Ex: 0.456 Does sufficient evidence exist that the customer satisfaction rate is different than the claim by the company at a significance level of a = 0.1? Select v Check Next 9:19 PM h L 70°F A aO à 40) 4/17/202 Delcte 411…
The thickness of a flange on an aircraft component is uniformly distributed between 0.2050 and 0.2150 micrometers. Determine the following: Proportion of flanges that exceeds 0.2125 micrometers in flange thickness Mean and variance of flange thickness O a. P(X 0.2125) = 0.25, E(X) = 0.2100, V(X) = 8.33 x 106 Oc NONE Od. P(X > 0.2125) = 0.75, E(X) = 0.2100, V(X) = 8.33 x 10-6
Also, can you tell whether the event can be considered unusual?
Fluid inclusions are microscopic volumes of fluid that are trapped in rock during rock formation. The article "Fluid Inclusion Study of Metamorphic Gold-Quartz Veins in Northwestern Nevada, U.S.A.: Characteristics of Tectonically Induced Fluid" (S. Cheong, Geosciences Journal, 2002:103-115) describes the geochemical properties of fluid inclusions in several different veins in northwest Nevada. The following table presents data on the maximum salinity (% NaCi by weight) of inclusions in several rock samples from several areas. Salinity Area Humboldt Range Santa Rosa Range 9.2 10.0 11.2 8.8 5.2 6.1 8.3 Ten Mile 7.9 6.7 9.5 7.3 10.4 7.0 Antelope Range Pine Forest Range 6.7 8.4 9.9 10.5 16.7 17.5 15.3 20.0 Can you conclude that the salinity differs among the areas?
What is R hat2 What is R hat2
find the minimum for the upper quartile
One way to identify penguin colonies is to examine thermal (surface temperature) maps of an area. Penguins appear warmer than their background (remember penguins are mammals). Suppose that on Torgersen Island, thermal values for a colony of penguins are uniformly distributed with a maximum thermal value of 18^{\circ}C18∘C.It has been reported that 20% of colonies report a thermal value of at least 15^{\circ}C15∘C. Based on this information, determine the minimum thermal value for colonies on Torgersen Island.
Estimate the average grade of Alex, who works 15 hours.
#4 Find the x for a normal variable
(a) A research has been conducted an experiment to compare the deflection (um) between two types of material for cutting tool in milling machining process. About 30 samples of cutting tool for material A and 30 of cutting tool for material B has been used for during the test. Table 2(a) shows several descriptive statistics represent the data of tensile strength. 2 Table 2 (a) Descriptive statistics for deflection (um) Material Number Minimum Q1 median Q3 Маximum of value value specimen A 30 0.462 3.453 6.415 8.548 13.599 В 30 0.2 2.037 4.157 7.716 15.491 (i) Plot a box plot based on recorded data given in Table 2(a) (ii) Based on the box plot, which material of cutting tool is have better performance?State your reason (ii1) Suppose that material A produce deflection of 4.4 µum. The data is wrongly recorded as 44 um. What you can interpret about the box plot? (iv) Calculate the value of IQR for both materials

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