Null and alternative hypotheses for the hypothesis? test

Assignment Help Basic Statistics
Reference no: EM132399923

In a study of treatments for very painful? "cluster" headaches, 143 patients were treated with oxygen and 142 other patients were given a placebo consisting of ordinary air. Among the 143 patients in the oxygen treatment? group, 114 were free from headaches 15 minutes after treatment. Among the 142 patients given the? placebo, 37 were free from headaches 15 minutes after treatment. Use a 0.05 significance level to test the claim that the oxygen treatment is effective. Consider the first sample to be the sample of patients treated with oxygen and the second sample to be the sample of patients given a placebo. What are the null and alternative hypotheses for the hypothesis? test?

Reference no: EM132399923

Questions Cloud

What is the name of the distribution of the test statistic : 1. What is the name of the distribution of the test statistic if the mean hay production is 2tons?
Hypothesis that the new process improved tardiness : This arrangement was tested for 10 days; over that period 40 classes with 25 students in each class saw a total of 99 students arrived late.
Determine the mean and standard deviation : Researchers are interested in the average number days of absences of students. 20 randomly selected students were surveyed, and the data is shown to the right.
Find the probability that the mean score of a class of size : Let us assume that the average score in a class is normally distributed with a mean of 78 and standard deviation of 5.5.
Null and alternative hypotheses for the hypothesis? test : What are the null and alternative hypotheses for the hypothesis? test?
What are the null and alternative hypotheses : What are the null and alternative hypotheses for the hypothesis? test?
Define type i and type ii errors : Define Type I and Type II errors. Give an example of a Type I error which would have serious consequences. Give an example of a Type II error
What is the probability that the sample proportion : What is the probability that the sample proportion will be within 0.05of the population proportion experiencing click fraud? (to 4 decimals)
Higher rate than owners of passenger cars : A reasonable hypothesis is that commercial trucks owners violate laws requiring front license plates at a higher rate than owners of passenger cars.

Reviews

Write a Review

Basic Statistics Questions & Answers

  Determine a 4-year weighted moving average forecast for

the following sales data are available for 2003-2008.year demand2003 72004 122005 142006 202007 162008 25determine a

  Explain what your computed population mean

Review the data and for the purpose of this project please consider the 100 listing prices as a population. Explain what your computed population mean and population standard deviation were

  Define correlation between prediction error and year

Suppose we add 120 miles to each error to get an idea of how far from the predicted track we might still find damaging winds.

  A pizza shop owner wishes to find the 95 confidence

question 1 a pizza shop owner wishes to find the 95 confidence interval of the true mean cost of a large pizza. how

  Perform a regression analysis on the data

Observations are taken on net revenue from sales of Hughes, HNS, and satellite services to see if offering rebates is beneficial for the organization.

  Construct a times series plot

Construct a times series plot. What type of pattern exists in the data and use trial and error to find a value of the exponential smoothing coefficient α that results in a relatively small MSE

  Give the lower bound of the 95 confidence interval for the

in a recent survey 344 ceos of medium and large companies were asked whether they had mba degrees. in the sample 97 had

  Percentage return on assets for 2018

Venus Corporation in 2018 financial statements show the following

  Total annual coupon income you will receive in year 3 is

Inflation turns out to be 2.3%, 3.3%, and 4.3% over the next 3 years. The total annual coupon income you will receive in year 3 is?

  Find the probability if the student passes the quiz

How would I find the probability if the student passes the quiz by guessing exactly 35 out of the 50 questions correctly.

  Define graffiti writers-arguments are valid or invalid

Some graffiti writers are artists relieving pent-up frustrations. Therefore, some artists relieving pent-up frustrations are graffiti writers.

  Why is the population mean important to the management

Identify the population and the population mean. Why is the population mean important to the management and owners of the proposed mine?

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd