Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Statistics and Probability Expert

problem 1)a) A farmer applies three kinds of fertilizers on 4 separate plots. The figures on yield per acre are tabulated below Perform the analysis of variance to test that:

1181_Fertilisers data.jpg

(i) The three fertilizers make any material difference in yields.

(ii) The plots are materially different in fertility.

You must construct an suitable ANOVA table and state your conclusion clearly.

b) Professor Newton is interested in determining whether his brightest students (those making best grades) tend to turn in their tests earlier (as they can recall material faster) or later (as they take longer to prepare down all they know) than the others in the class. For a particular physics test, he observes that students make grades given below in order of turning their tests in:

Order                                                    Grades
1-10                      94          70          85         89            92            98          63          88         74        85
11-20                    69         90           57         86            79            72           80         93          66       74
21-30                    50         55           47         59            68            63           89         51          90       88

If Professor Newton counts those making grade of 90 and above as his brightest students, then at a 5 percent level of significance, can he conclude that the brightest students turned their tests in randomly?

problem 2)a) Melisa’s Boutique has three small locations. Melisa keeps a daily record for each location of number of customers who actually make purchase. A sample of those data follows. Using Kruskal-Wallis, test at the 0.05 level of significance that her stores have same number of customers who buy.

Trianon           99           64          101           85           79            88            97         95          90        100
Caudan           83          102        125            61            91           96            94          89         93          75
Grand Baie    89            98           56           105           87           90            87         101         76         89

(b) A large hospital hires most of its nurses from universities in the area. Over the last year, they have been giving a test to newly graduated nurses entering hospital to find out which school, if either, seems to educate nurses better.

Based on following scores (out of 100 possible points), help personnel office of the hospital determine whether the schools differ in quality. Use the Mann-Whitney U test with a 10 percent level of significance.

                                                            Test Score        
 School A       97         69        73         84        76         92          90           88            84        87          93    
School B       88          99        65         69        97         84          85          89              91       90          87      91      72

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M96654

Have any Question? 


Related Questions in Statistics and Probability

1 why do researchers calculate the coefficient of

1. Why do researchers calculate the coefficient of determination? 2. What does a coefficient of determination of .40 indicate?

Although quasi-experimental designs are widely accepted in

Although quasi-experimental designs are widely accepted in behavioral science, some researchers are troubled by the fact that the evidence provided by quasiexperiments is seldom as conclusive as that provided by true exp ...

1 the total variance in a set of scores can be partitioned

1. The total variance in a set of scores can be partitioned into two components. What are they, and how do they differ? 2. What are some factors that contribute to error variance in a set of data? 3. Generally, do resear ...

A researcher conducted an experiment on the effects of a

A researcher conducted an experiment on the effects of a new "drug" depression. The researcher had a control group, and an experimental group that received nothing, a placebo group, and an experimental group that receive ...

Question to qualify for security officers training recruits

Question: To qualify for security officers training, recruits are tested for stress tolerance. The scores are normally distributed with a mean of 62 and a standard deviation of 8. If only the top 15% of recruits are sele ...

Name and explain the contributions of three abolitionists

Name and explain the contributions of three Abolitionists that supported and helped African Americans before the Civil War fight slavery?

The university is attempting to set its staffing plan for

The University is attempting to set its staffing plan for the next several year, and it wants to determine if the distribution of students among various graduate majors has changed from the historical averages which were ...

In a study of smokers who tried to quit smoking with

In a study of smokers who tried to quit smoking with nicotine patch therapy, 39 were smoking one year after the treatment, and 32 were not smoking one year after the treatment. We want to use a .05 significance level to ...

In minitab open the data set pulsemtw you may assume that

In Minitab, open the data set PULSE.mtw. You may assume that these 92 students are a random sample of all undergraduates. (a) Obtain a 95% confidence interval for µ F  - µ M , the extent to which average pulse rates of f ...

A sample size of 50 is selected from a normal distribution

A sample size of 50 is selected from a normal distribution having a mean of 95 and a standard deviation equal to 15. What is the probability of selecting a sample having a mean exceeding 100?

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro

Describe what you learned about the impact of economic

Describe what you learned about the impact of economic, social, and demographic trends affecting the US labor environmen