A housing development can only build on a certain plot of land if can show that the average level ofarsenic in the groundwater is less than 60 parts-per-million (ppm). Soil samples are drawn from the siteand tested in a lab. The results of the samples (in ppm) are given below. Is there enough evidence to saythat the land is ready for development using a level of significance of 5%? You may assume that the levelof ground arsenic is normally distributed in the area.Sample Reults: 16 50 35 80 15 27 99a. Enter the null hypothesis for this test.Hoe 78b. Enter the alternative hypothesis for this test.H₁: 78 78c. is the original claim located in the null or alternative hypothesis?Select an answerd. What is the test statistic for the given statistics?e. What is the p-value for this test?f. What is the decision based on the given statistics?Select an answer68 11 98 34g. What is the correct interpretation of this decision?Using alevel of significance, there Select an answer sufficient evidence toSelect an answer the claim that the average level of arsenic in the groundwater is less than 60parts-per-million (ppm).

From given we have data set : 16,50,35,80,15,27,99,68,11,98,34

Answered: A housing development can only build 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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A process has a process capability ratio, C, =1.38, At some time the process seems to have a mean shifted left of the center. The process capability index,Cpk, is found to be 0.78, and the mean is left-shifted, that is the current mean is mess than the mean of the control chart. Determine the Z (UTL) with respect to the current left-shifted mean.
Trace metals in drinking water affect the flavor and an unusually high concentration can pose a health hazard. Ten pairs of data were taken measuring zinc concentration in bottom water and surface water. Bottom 0.430 0.266 0.567 0.531 0.707 0.716 0.651 0.589 0.469 0.723 Surface 0.415 0.238 0.390 0.410 0.605 0.609 0.632 0.523 0.411 0.612 With the help of Mathematics and R Studio: Does the data suggest that the true average concentration in the bottom water is different than that of surface water? You can assume that the conditions for inference are met.
Provide the null and alternative hypotheses used to address these problems. Make sure that your notation is understandable.
The failure time of a certain component has a Weibull distribution with B = 4, 0 = 2000, and y = 1000.Determine the reliability of the component and the hazard rate for an operating times of 1400 and 1800 hours respectively.
I need help, please
Suppose u, and u, are true mean stopping distances at 50 mph for cars of a certain type equipped with two different types of braking systems. The data follows: m = 5, x = 115.1, s, = 5.05, n = 5, y = 129.2, and s, = 5.36. Calculate a 95% CI for the difference between true average stopping distances for cars equipped with system 1 and cars equipped with system 2. (Round your answers to two decimal places.) n USE SALT Does the interval suggest that precise information about the value of this difference is available? O Because the interval is so narrow, it appears that precise information is available. o Because the interval is so wide, it appears that precise information is not available. o Because the interval is so narrow, it appears that precise information is not available. Because the interval is so wide, it appears that precise information is available. You may need to use the appropriate table in the Appendix of Tables to answer this question.
Total plasma volume is important in determining the required plasma component in blood replacement therapy for a person undergoing surgery. Plasma volume is influenced by the overall health and physical activity of an individual. Suppose that a random sample of 50 male firefighters are tested and that they have a plasma volume sample mean of x = 37.5 ml/kg (milliliters plasma per kilogram body weight). Assume that ? = 7.20 ml/kg for the distribution of blood plasma.
(c) Assume that the resist ance of a cert ain type of resistors is normally distributed with a mean of 250 ohms and a st and ard deviat ion of 15 ohms. What percent age of the resistors of this type will have a resistance above 270 ohms?
A researcher reports an F-ratio with df = 3, 56 from an independent-measures research study. How many treatment conditions were compared in the study? How many participants were in the study?
If needed do not use a P value to answer any problem. No credit will be given if a P value is used. Use only criticalvalues.
4. A new method for cholesterol utilizing 4 - aminoantipyrine was evaluated in the laboratory. The procedure was run in on 20 separate days. The following values are given: Mean = 150 mg/dl Sum of the squared difference from the mean is 3600 Calculate the SD.
Suppose u1 and uz are true mean stopping distances at 50 mph for cars of a certain type equipped with two different types of braking systems. The data follows: m = 6, x = 115.6, s1 = 5.03, n = 6, y = 129.9, and s2 = 5.38. Calculate a 95% CI for the difference between true average stopping distances for cars equipped with system 1 and cars equipped with system 2. (Round your answers to two decimal places.) In USE SALT Does the interval suggest that precise information about the value of this difference is available? Because the interval is so narrow, it appears that precise information is available. Because the interval is so narrow, it appears that precise information is not available. o Because the interval is so wide, it appears that precise information is not available. o Because the interval is so wide, it appears that precise information is available.

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