What are you drinking? Environmental Protection Agency standerds require that the emount of lead in drinking water be lessthan 15 micrograms per liter. Twelve samples of water from a particular source have the following concentrations, in units ofmicrograms per liter. Assume the population standerd deviation is a-5. if appropriate, perform a hypothesis test to determinewhether you can conclude that the mean concentration of lead meets the EPA standards, Use the t-0.01 tevel of significanceand the /'value method with the T1-54 calculator.11.6 14211.8 149 159 9.813.58.6123 17.7 9.815.KSend data to ExcetPart: 0/6Part 1 of 6Explain why it is necessery to check that the population is approvimately normal before performing a hypothesis test.It is necessary to check that the popuation is approximately narmal because

Answered: Image /qna-images/answer/6c1e72b8-2a76-4d70-8316-d4038e52e040.jpg

Answered: Epain why it is necessery e check that…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

Plese help with answering this practice problem
I am working on my class project. I do not know how to explain Type I and Type II errors based on my data.
What does it mean when sample results are statistically significant?
You are conducting a study to see if the probability of catching the flu this year is significantly different from 0.55. You use a significance level of a = 0.02. Ho:p = 0.55 H1:p + 0.55 You obtain a sample of size n = 276 in which there are 162 successes. What is the test statistic for this sample? (Report answer accurate to three decimal places.) test statistic = What is the p-value for this sample? (Report answer accurate to four decimal places.) p-value = The p-value is... O less than (or equal to) a O greater than a This test statistic leads to a decision to... O reject the null O accept the null O fail to reject the null As such, the final conclusion is that... O There is sufficient evidence to warrant rejection of the claim that the probability of catching the flu this year is different from 0.55. O There is not sufficient evidence to warrant rejection of the claim that the probability of catching the flu this year is different from 0.55. O The sample data support the claim that…
You'd like to test if a sample of prisoners is more likely to have PTSD (diagnosed, not diagnosed) than a sample of non-incarcerated individuals. O One Sample Z test One Sample t test O Two Sample Z test O Independent two Sample t test Paired t test O One-way ANOVA Chi Square Test Pearson's Correlation Coefficient O Simple Linear Regression
A one-way ANOVA is called "one-way" because of which of the following it predicts the outcome variable using one predictor variable multiple predictor variables can be used, but they all only predict one outcome variable. there's only one way to do it No answer text provided.
Hypothesis Test of the Difference Between Two PAIRED Means. Im pretty sure this should be a one tailed test, as does my teacher does an example for this and her's had one tail. Help me understand which tail it is (what lead you to believe it was right or left tail.) I will need the test statistic and critical value(s). You will need the null and alternative (H0: u1=u2, H1: u1=/=u2). The equation that is needed to solve this is t= d *bar* - Ud / (Sd/*square root* of n) D.O.F formula to be used is n-1. This is all the infomartion I think you need might need to determine the kind of problem this is. I've asked this question before but it seems I didn't provide enough information and the answers included two tailed test or something else. Oh also I need these formulas to be used, as in no excel to speed things up because as much as i like shortcuts I need to understand this concept. Standard dev or Sx should be 1.414213562. Pretty sure this is right, not 100%. d *bar* should = -2, pretty…
Test the claim that for the population of statistics final exams, the mean score is 79 using alternative hypothesis that the mean score is different from 79. Sample statistics include ?=17, x¯=80, and ?=16.s=16. Use a significance level of ?=0.01.. (Assume normally distributed population.)The test statistic is
What is the test statistic?(3 decimal places) What is the critical value(s)?(3 decimal places) Reject or don’t reject?
Question Heip How do the requirements for a chi-square test for a variance or standard deviation differ from a z-test or a t-test for a mean? Choose the correct answer below. OA A chi-square test can only be used when the population has a normal distribution. On the other hand, a z-test or a t-test can only be used when the sample size is at least 30. O B. A chi-square test can only be used when the population has a normal distribution. On the other hand, a z-test or a t-test can be used when either the population has a normal distribution or the sample size is at least 30. O C. Az-test or a t-test can only be used when the population has a normal distribution. On the other hand, a chi-square test can be used when either the population has a normal distribution or the sample size is at least 30. O D. Az-test or a t-test can only be used when the population has a normal distribution. On the other hand, a chi-square test can only be used when the sample size is at least 30. Click to…
Scenario: I'm interested in whether there is a relationship between Team (A vs. B) and Outcome (Good vs. Bad). Below are the data. Test the null hypothesis that the categories are independent. α= .05. Team A Team B Good Outcome fo = 75 fe = fo = 45 fe = Bad Outcome fo = 25 fe = fo = 5 fe = The expected frequency, fe , for the Team A X Good Outcome category = _____

Recommended textbooks for you

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

Elementary Statistics: Picturing the World (7th E…

Statistics

ISBN:

9780134683416

Author:

Ron Larson, Betsy Farber

Publisher:

PEARSON

The Basic Practice of Statistics

Statistics

ISBN:

9781319042578

Author:

David S. Moore, William I. Notz, Michael A. Fligner

Publisher:

W. H. Freeman

Introduction to the Practice of Statistics

Statistics

ISBN:

9781319013387

Author:

David S. Moore, George P. McCabe, Bruce A. Craig

Publisher:

W. H. Freeman

SEE MORE TEXTBOOKS

Epain why it is necessery e check that the population is approimately normal before performing a hypothesis test. It is necessary to check hat the population is approximately normal because