Null and research hypotheses and errors

Assignment Help Basic Statistics
Reference no: EM13111981

Type I and Type II Errors

In this scenario, (1) formulate both a null and (2) research hypothesis and give an example of both a (3) Type I and (4) Type II error.

Scenario: You are Supervisor or Research for Doggie Heaven Biscuit Company. Your scientists have developed a new dog biscuit for the treatment of doggie breath. In a clinical trial of a new drug, the new biscuit is shown to be better in reducing doggie breath than the current biscuit made by your company. Formulate both a null hypothesis and a research hypothesis for the new biscuit is no better, on average, than the current dog breath biscuit made by your company.

Reference no: EM13111981

Questions Cloud

What is the design storage and water surface elevation : What is the design storage and water surface elevation at the peak outflow rate and estimate the long-term average reduction (EPA, 1986) in particulates under dynamic conditions.
Inferential statistics to make managerial decisions : Can you provide some pros and cons of using descriptive and inferential statistics to make managerial decisions.
Limitations of nonparametrics tests : Can you tell me what are the advantages and limitations of applying nonparametric tests in solving business problems?
What are the ethical implications of jenner method : In England in the 1700s, Edward Jenner injected a child with a smallpox vaccine that had not yet been tested. After some time had passed, he injected the same child with a living smallpox virus. How do you think Jenner's experimental method differ..
Null and research hypotheses and errors : You are Supervisor or Research for Doggie Heaven Biscuit Company. Your scientists have developed a new dog biscuit for the treatment of doggie breath.
Determine that none of the employees are absent : Determine the probability of randomly selecting 10 production employees on hot summer day and determining that none of them are absent?
Evidence to reject the researcher claim : A researcher claims that the average age of people who buy lottery tickets is 70. A sample of 30 is selected and their ages are recorded as shown below. The standard deviation is 16. At alpha = 0.05 is there enough evidence to reject the researche..
Steps involved in hypothesis testing using : List the steps involved in hypothesis testing using: a) the traditional/classical method; b) the probability-value method. Provide an example of each.
Find expected number of times person returns : Person repeatedly and independent flips the fair coin to decide whether to take the step to left or to right from a point X. Find out expected number of times person returns to X.

Reviews

Write a Review

Basic Statistics Questions & Answers

  Concepts of analysis of variance

The original concepts of analysis of variance came from the work of Sir Ronald A. Fisher, an English statistician. This technique, better known as ANOVA, has become one of the most commonly used research methods for testing differences among sever..

  Confidence interval and mean

Find a 95% confidence interval for the mean  µ   of the population from which the men were selected.

  Valid description of the bootstrapping method

In which of the following situations is bootstrapping (and other resampling methods) often used and Which of the following is a valid description of the bootstrapping method.

  Probability that a respondent chosen at random

Of 260 females, 224 answered yes. Construct a contingency table to evaluate the probabilities. What is the probability that a respondent chosen at random:

  Decision-maximizing expected value

The concessions manager at the Clemson vs. USC football game must decide whether to have the vendors sell sun visors or umbrellas. There is a 30% chance of rain

  Confidence interval for the average mao activity level

Based on this data, give a 95% confidence interval for the average MAO activity level of bulimic patients. Assume that the level of MAO activity is normally distributed.

  Computing mean-standard deviation of binomial distribution

The probability that a flower seed will germinate is 0.7. Find the mean and standard deviation for the random variable x, the number of seed that will germinate in each set.

  Population risk difference and population attributable risk

Compute the population attributable risk for smoking and lung cancer.

  Conclude how woodco can maximize its revenue

Woodco manufactures tables and chairs. Each table and chair must be made entirely out of oak or entirely out of pine. A total of 150 board feet of oak and 210 board feet of pine are available.

  Description of the variable

Provide a brief description of the variable and whether the scale of measurement is nominal, ordinal, interval, or ratio, and why. Explain what it means to say that this variable is "normally distributed."

  Nicotine contents of two brands of cigarettes

A study has been made to compare the nicotine contents of two brands of cigarettes. Ten cigarettes of Brand A have an average nicotine content of 3.1 milligrams with a standard deviation of .5 milligrams

  Finding least-squares regression line and its slope

Find out the least-squares regression line and interpret its slope.

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