Hypothesis testing for two populations

Assignment Help Basic Statistics
Reference no: EM13108587

Your manager, who just read an abridged version of a statistics book, wants you to test hypotheses for the difference in two population means. The sample sizes for each are 23. He is adamant that you perform a z-test. What would you tell him? What specific explanation would you give?

Reference no: EM13108587

Questions Cloud

Illustrate what happen if the short-term rates were reversed : Given that Guardian’s earnings before interest and taxes are $200,000, compute earnings after taxes for each of your alternatives. Illustrate what would happen if the short- and long-term rates were reversed?
Illustrate what was the business impact of tjx data loss : Illustrate what management, organization and technology factors contributed to these weaknesses? Illustrate what was the business impact of TJX’s data loss on TJX, consumers and banks?
Scatter diagram and linear relationship : Draw the scatter diagram. Does it appear that x and y are related? If so, how? Test to determine whether there is evidence of a linear relationship
Creating work breakdown structure : How would you go about analyzing an organizational structure in terms of creating a work breakdown structure? What are the major organizational characteristics that you would evaluate?
Hypothesis testing for two populations : Your manager, who just read an abridged version of a statistics book, wants you to test hypotheses for the difference in two population means.
Compute the costs associated with level production : Henderson Furniture sells reproductions of 18th century furniture. For a particular table, the following information is valid.
Compute standard deviation if sample size increased : Standard deviation of this poll is 4%. What would be standard deviation if sample size were increased from 83 to 190?
Creating eight step hypothesis test : Create a hypothesis and write out the eight steps used to apply a statistical test to your hypothesis.
Use critical value method to find evidence : Is there evidence that mean dimension is not 221 mm? Suppose population is normally distributed. Use a=0.05 and critical value method.

Reviews

Write a Review

Basic Statistics Questions & Answers

  Logistics engineering and management

Assuming 7 classes with a class interval width of 4, plot the data and construct a curve. What type of distrubtuion is indicated by the curve?

  Single mean by hypothesis test

Using the .10 level of significance, can we conclude that the assembly time using the new method is faster?

  Creating gantt chart using msp

Create Gantt chart using MSP. Suppose the 5 day workweek, compute critical path of the project.

  What is the probability sample mean

The mean television viewing time for Americans is 15 hours per week (Money, November 2003). Assume a sample of 60 Americans is taken to further investigate viewing habits. Suppose the population standard deviation for weekly viewing time is Q = 4..

  One-way anova and post-hoc test using spss

In this paragraph, be sure to make it clear how you handled the issue of conducting three planned comparisons. Also provide the ANOVA summary table for these results.

  Estimating the difference between the population means

Use a 5% significance level to test the claim that there appears to be a difference in the effectiveness of the two diets.

  Showing that the drug has a beneficial effect

The t-statistics that was obtained in the study of 400 subjects was t=20, rejecting the null hypothesis and showing that the drug has a beneficial effect. Why was management upset?

  Significant treatment effect-two tailed test

If the population standard deviation is σ = 10, can you conclude that the treatment has a significant effect? Use a two-tailed with α = .05.

  Preparing tables of descriptive statistics

Prepare tables of descriptive statistics (mean, median, Quartiles, IQR, and Standard Deviation) by firm for net profit margin (PROFITS). Discuss.

  Finding standard deviation of even number

Fair die is rolled 10 times. Determine the probability that the odd number (1, 3 or 5) will occur less than 4 times?

  Explanation of minitab output for two-way anova

Is there sufficient evidence to support the claim that site has an effect on the amount of pesticide?

  Computing percentage of children who watch television

Based on information, compute the following: Percentage (or portion) of children who watch television less than 6.5 hours a week.

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