Mean amount of force necessary

Assignment Help Basic Statistics
Reference no: EM13108517

The quality control engineer for a furniture manufacturer is interested in the mean amount of force necessary to produce cracks in stressed oak furniture. She performs a twotail test of the null hypothesis that the mean for the stressed oak furniture is 650. The calculated value of the Z test statistic is a positive number that leads to a p-value of 0.080 for the test. True or False: Suppose the engineer had decided that the alternative hypothesis to test was that the mean was greater than 650. Then if the test is performed with a level of significance of 0.10, the null hypothesis would be rejected.

True
False

Reference no: EM13108517

Questions Cloud

How about male attraction to healthy youthful women : How would an evolutionary psychologist explain differing levels of physical aggression in males and females?
Scientific method in practice : Choose a research article from your field.Write the five hypotheses that this study is testing.Write both the null and alternative hypotheses for each one.
Describe an independent groups experimental approach : Be sure to operationally define both your Independent Variable and your Dependent Variable. Give enough detail to convey your research method. Be sure that you are specifying the comparison that could be made to test this hypothesis.
How larger variability impact size of standard error sample : In part b, sample have greater variability than part a, but sample sizes are unchanged. How does larger variability influence size of standard error for sample mean?
Mean amount of force necessary : The quality control engineer for a furniture manufacturer is interested in the mean amount of force necessary to produce cracks in stressed oak furniture.
Calculate annual breakeven number : The restaurant would serve dinner Tuesday through Saturday. Brian has noticed a restaurant for lease. The restaurant has seven tables, each of which can seat four.
Statistical analysis-automobile accidents : A study is made by an auto insurance company to determine if there is a relationship between the driver's age and the number of automobile accident claims submitted during a one-year period. From a sample of 300 claims, the following information w..
What is the sequence of events : According to the James-Lange theory of emotions, what is the sequence of events when someone feels an emotion?
Significance test for hypoglycaemia : Rachel's doctor suspects she is suffering from hypoglycaemia. The amount of glucose in the bloodstream varies and a person with hypoglycaemia has an average blood glucose level of less than 65 mg/dL.

Reviews

Write a Review

Basic Statistics Questions & Answers

  Information in a graphical format

Graph the information using a histogram and a scatter plot in Excel as well. How does seeing the information in a graphical format provide more information?

  Value of the interquartile range

A monthly report to the Texas Department of Health, division of Water Hygiene, contained the following water production data in thousands of gallons:

  Definition of consumer price index

Consumer Price Index is: a. a weighted aggregate price index where the weight for each item is its current-period quantity. b. a weighted aggregate price index where the weight for each item is its last-period quantity. c. an index that is designed t..

  Adding line-of-best fit to scatterplot

Add line-of-best fit (trend line/linear regression line) to your scatterplot.  Write down the equation of the trend line below.

  Probability of observing an event

Items coming off a production line are categorized as good (G), slightly blemished (B), and defective (D), and the percentages are 80%, 15% and 5%, respectively.

  Decisions in taking machines among two

What is the correct answer to Suppose you were trying to decide which of two machines to purchase. Furthermore, suppose the length to which the machines cut a particular product part was important.

  Conclusion of mean waiting time

At the .05 significance level, can we conclude that the mean waiting time is less than 3 minutes?

  Reasonable to compute that the mean of the population

Is it reasonable to compute that the mean of the population is actually $15,000.

  Variation in final grades for operations

The final grades given by two professors in introduction to operations research course have been carefully examined. The students in the first professor's class had a grade point average of 3.0 and a standard deviation of 0.2.

  Inverse probability based on normal distribution

Inverse probability based on normal distribution - The data set has a bell-shaped distribution. Between what two prices do 68% of the houses lie?

  Testing the hypothesis-the mean

A random sample of 15 first-year CMAs in Denver produces a mean salary of $32,279, with a standard deviation of $1,797. Test the hypothesis that the mean for all Denver first-year CMAs is not equal to $31,129. Use the .05 level of significance.

  Research methods independent-dependent variables

A neuropsychologist compare the auditory abilities of blind versus normally sighted rats. He predicted that the visually impaired rats would have better auditory development than normally sighted rats.

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