What is the null hypothesis

Assignment Help Basic Statistics
Reference no: EM132849350

A factory that manufactures screws is performing a quality control experiment. Each object should have a length of no more than 19 centimeters. The factory believes that the length of the screws is less than this value and measures the length of 89 screws. The sample mean screw length was 19.07 centimeters. The population standard deviation is known to be σ=0.21 centimeters.

What is the null hypothesis? What is the alternative hypothesis?

Select μ≤19 μ=19.07 μ=19

What is the alternative hypothesis?

Reference no: EM132849350

Questions Cloud

What is reorder point : You want a 99% service level. What is your reorder point? Round your answer to the nearest integer.
What is the chance that a student picks red : From years of experience, the teacher knows that only 1 in 7 students choose yellow and that about half of the students pick blue. What is the chance that a stu
Report on consumer fraud and identity theft : According to the February 2008 Federal Trade Commission report on consumer fraud and identity theft, 23% of all complaints in 2007 were for identity theft
What is the test statistic z of software company : A software company is interested in improving customer satisfaction rate from the 57% currently claimed.
What is the null hypothesis : A factory that manufactures screws is performing a quality control experiment. Each object should have a length of no more than 19 centimeters.
Calculating the expected values : Problem Set 1: Chi Square Goodness of Fit (6 pts)1) Complete the following chart (A teacher believes that the percentage of students at her high school
What are the confidence limits for a confidence interval : Suppose we obtained data on vein size after application of a nitroglycerin ointment in a sample of 100 patients. The mean vein size is found to be 7.5 mm with a
Find the mean and the standard deviation : The following data are the response times in seconds for n5.3 3.7 5.5 3.8 3.54.1 4.0 4.5 4.6 4.1 =25 first graders to arrange three objects by size.
What is the value of sem : Suppose we obtained data on vein size after application of a nitroglycerin ointment in a sample of 100 patients.

Reviews

Write a Review

Basic Statistics Questions & Answers

  Computing the estimated probability distribution

Sound City sells the ClearTone-400 satellite car radio. For this radio, historical sales records over the last 100 weeks show 3 weeks with no radios sold

  Discuss proportion of zeros among large set of random digits

Random digits. We know that the proportion of 0s among a large set of random digits is p = 0.1 because all 10 possible digits are equally probable.

  Create a set of ten real numbers

Create a set of 10 real numbers. For your set of numbers, calculate the mean, median, mode, and midrange.

  Probability distribution for the value

Construct the probability distribution for the value of a 2-card hand dealt from a standard deck of 52 cards (all face cards have a value of 10 and an ace has a value of 11).

  Discuss the effect that sample size on the width of

question in a start of the twenty-first century saw many corporate scandals and many individuals lost faith in

  Chaotic environment-business statistical analysis

In today's chaotic environment, business statistical analysis (e.g., business forecasting) doesn't make any sense.

  The unmanned exploration of planets

The unmanned exploration of planets such as Mars requires a high level of autonomy because of the communication delays between robots in space and their Earth-based stations. This affects all the components of the system:

  A buyer for msg must buy enough chicken tenders to supply

a buyer for msg must buy enough chicken tenders to supply all the concession stands around the arena during playoff

  Make a line chart for time-series describing spirit airlines

Choose one time-series describing Spirit Airlines and make a line chart. (b) Describe the trend (if any) and discuss possible causes.

  Find the probability that a randomly selected worker

Find the probability that a randomly selected worker has one month's income or more set aside for emergencies.

  For a hypothetical magazine the probability that the reader

for a hypothetical magazine the probability that the reader is male given that the reader is at least 35 years old is

  Proportion who believe there is life on other planet

(a) What is the sample proportion of Americans who believe there is intelligent life on other planets? (b) What is the standard error of the sample proportion? (c) Calculate a 90% CI for the population proportion of Americans who believe there is ..

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