Test for population standard deviation at 5 percent level

Assignment Help Basic Statistics
Reference no: EM1320951

Use the traditional method with α = 0.05 to test the claim that the weights of statistic textbooks vary more than the weights of text in general: σ = 0.65kg. A simple random sample of 8 statistic text, taken from a normally distributed population, were found to have a standard deviation of 0.72kg. Calculate the test statistic and the critical value to determine the conclusion. Regarding this claim.

Determine the test statistic ___________ (Round to nearest thousandth).

Use the Chi-Square distribution table to determine the critical value. (Round to the nearest thousandth)

Choose the correct conclusion regarding the claim that the weights of statistics text vary more than the weights of text in general.

A). Reject the null hypothesis; there is sufficient evidence to support the claim.

B). Fail to reject the null hypothesis; there is insufficient evidence to support the claim.

Reference no: EM1320951

Questions Cloud

Critical value for different types of sample size : Find the critical value for different types of sample size and level of significance:
Provide the name of theorist : Choose one theory you agree with most. Provide the name of the theorist(s) and a basic overview of the theory, including all relevant components.
Critical value and testing for two independent samples : Determine the rejection region for the hypothesis  Ho  : mean D= 0 if  H a : mean  D  > 0. Use a = 0.01. z>
Example of bundled products : Name an example of bundled products you are familiar with. Why would a company use a bundled pricing strategy for its products?
Test for population standard deviation at 5 percent level : Choose the correct conclusion regarding the claim that the weights of statistics text vary more than the weights of text in general.
Dominant cultures and subcultures : Contrast the dynamics between dominant cultures and subcultures either in a work setting or in society. Explain why it is important to understand the impact of culture.
Correlation coefficient testing and r-square value : Determine the proportion of variation in grade that can be explained by the linear correlation between the grade and the number of credit hours earned at the same time of taking the course.
Marketing advantages of strong brands : What is the importance of marketing and what is the scope of marketing? What are the marketing advantages of strong brands? Describe the four steps of brand building.
Advantages and disadvantages of using erp : What are the advantages and disadvantages of using an ERP system? What is the relationship between information silos and enterprise resource planning?

Reviews

Write a Review

 

Basic Statistics Questions & Answers

  Pearsons correlation coefficient

Does the weight of a vehicle affect the gas mileage? The following random sample was collected where  x  = weight of a vehicle in hundreds of pounds and  y  = miles per gallon.

  Determining critical value for boundary of rejection region

Determine critical value for boundary of the rejection region (i.e., Zα).

  Gini coefficient and hypothetical gini values

First explain what the Gini coefficient is and what hypothetical Gini values of 0 and 1 mean. Sort the data by the Gini coefficient in 2000 and look at the list of countries.

  Creating probability distribution of data

Small bag of Skittles candies has following assortment: red (12), blue (5), orange (15), brown (0), green (16), and yellow (7). Create the probability distribution for x.

  Confidence interval for a confidence level

We assume that the population is approximately normally distributed.  Find the confidence interval: for a confidence level of 95%:

  Sampling distribution of the population mean

According to the study, the mean age of a self-employed individual is 46.6 years with a standard deviation of 10.8 years.

  Population mean cost

What is the 95% confidence interval estimate of the population mean cost for a prescription of Zocor?

  Estimate standard error of the mean

For a population with a mean of μ = 50 and a standard deviation of σ = 10, how much error, on average, would you expect between the sample mean (M) and population mean for:

  Probability for the mean weight for a sample

What is the probability that the mean weight for a sample of 40 trout exceeds 405.5 grams?

  Conditional probability of an event

Show that someone will think that the claim has more than a fifty percent chance of being true if p > q  /  (1 + q). Explain.

  Utilizing your charts stated whether the filling operation

Utilizing your charts stated whether the filling operation has been in control for every of the 18 operating hours this day.

  Probability distribution for the number of travelers

Develop a probability distribution for the number of travelers who plan their trips within two weeks of departure.

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