Question: Weights of Poplar Trees We noted in the Chapter Problem that the weight of 1.34 kg appears to be an outlier. If we delete that

Weights of Poplar Trees We noted in the Chapter Problem that the weight of 1.34 kg appears to be an outlier. If we delete that value, the STATDISK results are as shown below.

a. What is the null hypothesis?

b. What is the alternative hypothesis?

c. Identify the value of the test statistic.

d. Identify the critical value for a 0.05 significance level.

e. Identify the P-value.

f. Based on the preceding results, what do you conclude about equality of the population means?

g. Compare these results to those obtained with the weight of 1.34 kg included. Does the apparent outlier of 1.34 kg have much of an effect on the results? Does the conclusion change?

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock blur-text-image

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Statistics Informed Decisions Using Data Questions!

Name:_____________________________ HP340: Statistical Methods, Fall 2016 Due Date: Nov 28, 2016 Homework #8 Instructions: Clearly circle the letter of the best answer for multiple-choice questions...

Chapter 9 Compensation and Incentives Diane Bigda/Photodisc/Getty Images Learning Objectives After reading this chapter, you should be able to do the following: Discuss various psychological...

A number of young adults, ages 19 to 25, live with their parents. Data were collected, and the proportion of men and women in that age group who live with their parents was calculated. A 90%...

Top of Form 1. Some variables that were recorded while studying diets of sharks are given below. Which of the variables is categorical? The length of the shark being observed The type of shark being...

Montonya Company has the following selected data for the current year: Sales (10,000 units) $90,000 Direct materials 30,000 Direct labor costs 10,000 Variable manufacturing overhead 3,500 Fixed...

I'm in serious need of help in my accounting class (acc205) . I'm falling behind and I need help with this weeks assignment. for week three for the may-june month . can someone please help me ....

................................ Weights of poplar trees were obtained from trees planted in a rich and moist region. The trees were given four (4) different treatments (fertilizer, irrigation,...

The following table shows the twowag.-r ANGVA output for the weights of poplar trees. Test the hypothesis that the weights of poplar trees are not affected by an interaction between site and...

5. Interaction Effect Refer to the Minitab display and test the null hypothesis that the weights of poplar trees are not affected by an interaction between site and treatment. What do you conclude?

If Z is a standard normal random variable, prove this companion to the inequality in Example 3.6.3: 2 t P(IZ| 2 t) 2 V *1+t2

Many studies have demonstrated that high blood pressure increases the risk of developing heart disease or having a stroke. It is also safe to say that the health risks associated with binge drinking...

Kingbird Company leases an automobile with a fair value of $ 1 5 , 6 9 0 from Daniel Motors, Inc., on the following terms. Non - cancelable term of 5 0 months. Rental of $ 3 2 0 0 . 5 % per month is...

What is the ratio of the velocity of a 5.00-MeV ray to that of an particle with the same kinetic energy? This should confirm that s travel much faster than s even when relativity is taken into...