Null hypothsis of aircraft manufacturer

Assignment Help Basic Statistics
Reference no: EM13111657

An aircraft manufacturer is attempting to determine if the average leg length of the adult male has changed from 44". A sample of 81 men was selected randomly and the average length was found to be 45.5", with a standard deviation of 5.5". Test the null hypothesis that the average leg length of the adult male is 44", at a = 0.05.

Reference no: EM13111657

Questions Cloud

Evaluate the inflation rate : An attempt was made to evaluate the inflation rate as a predictor of the spot rate in the German treasury bill market. For a sample of 29 quarterly observations the estimated linear regression
Describe and explain in some detail the unique conditions : Considering geographic distribution, physical environmental conditions, symbiosis, alpha- and beta diversity, and any other factors you consider relevant, describe and explain in some detail the unique conditions associated with hermatypic coral e..
Correlation coefficient and hypothesis testing : A geography teacher is interested in the link between mathematical ability and the ability to visualize three dimensional situations.He gives a group of 15 students a test and records each students score
Explain at least one challenge facing organisms : Describe how the physical forces generated by waves and currents and/or the ebb and flow of tides, contribute to the physical characteristics of each of these habitats we will visit. Explain at least one challenge facing organisms in each of these..
Null hypothsis of aircraft manufacturer : An aircraft manufacturer is attempting to determine if the average leg length of the adult male has changed from 44". A sample of 81 men was selected randomly
Conduct an investigation and make a report for the tool set : Conduct an investigation and make a report for the tool set - Writing assignment is to accompany the lesson 8024 Investigation Reports
Spike recovery of trimethylbenzene : 1g soil has been spiked with 0.1ml of 100 ppm (v/v) trimethylbenzene and subsequently extracted with 250 mL pentane. The extract is then measured with GC-FID.
Prepare the manufacturing staffs calculations : Prepare the manufacturing staffs calculations, In the fIrst set of calculations, the staff used a discount rate of 20 percent, a fIve-year time horizon, and ignored taxes and terminal value. What is the relative attractiveness of these three alternat..
List four conditions that facilitate the precipitation : List four conditions that facilitate the precipitation of calcium carbonate in the ocean and explain how each of these conditions is related to the healthy growth of the hermatypic corals.

Reviews

Write a Review

Basic Statistics Questions & Answers

  Determine maximum and minimum dollar amount

Determine the maximum and minimum dollar amount spent per week for middle 50% of one-person households. Suppose that standard deviation is$5 and variable is normally distributed.

  Level of confidence a company producing street signs

With a 98% level of confidence a company producing street signs wants to make sure the length of their product is meeting quality standards.

  Scores on a scholastic aptitude test

Scores on a scholastic aptitude test are normally distributed with standard deviation σ=100 points. A group of 25 inner city high school students takes the test; their mean scores is x-bar = 440 points.

  First poisson event time-marked position lies between range

R1 signifies the first Poisson event time after m (or 1 if there are no Poisson events in [m,1]), then it would be learned that marked position lies between L1 and R1.

  Regression to study recent loans of large bank

A mortgage department of a large bank is studying its recent loans. Of particualr interest is how such factors as the value of the home (in thousands of dollars), education level of the head of the household, age of the head of the household, curr..

  Minimum amount of water pumped

Find the minimum amount of water pumped in 30 days. Let y be the total number of gallons pumped x days after pumping being. Note that (0,0) is on graph of the equation.

  To test the claim using two proportion z test

Obtain a test statistic and  p -value. Interpret the results at  α  = .01.

  Gasoline consumption following a normal distribution

The manufacture of a new compact car claims the miles per gallon (mpg) for the gasoline consumption follow a normal distribution with mean of 25.9 mpg and standard deviation of 9.5 mpg . if 36 such cars are tested , what is the probability the ave..

  Meeting its reliability requirement

A demonstration to verify that an item meets its reliability requirement is based on obtaining 5 successful tests. If the probability of a successful test is 0.9, find the probability that 10 tests will be required to pass the demonstration.

  Probability of weight of quarter

Currently, quarters have weights that are normally distributed with a mean of 5.670 g and a standard deviation of 0.062 g. A vending machine is configured to accept only those quarters with weights between 5.550 g and 5.790 g.

  Estimate the chance of getting aces

A die is rolled 60 times. An "ace" is the side with one dot. Use the normal approximation to estiate the chance of getting exactly 12 aces.

  Determining z-score and proportion

Toby's trucking company determined that the distance traveled per truck per year is normally distrinuted, with a mean of 50.0 thousand miles and a standard deviation of 12.0 thousand miles.

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