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

Introduction to epidemiology assignment -assignment should

Introduction to Epidemiology Assignment - Assignment should be typed, with adequate space left between questions. Read the following paper, and answer the questions below: Sundquist K., Qvist J. Johansson SE., Sundquist ...

Question 1 many high school students take the ap tests in

Question 1. Many high school students take the AP tests in different subject areas. In 2007, of the 144,796 students who took the biology exam 84,199 of them were female. In that same year,of the 211,693 students who too ...

Basic statisticsactivity 1define the following terms1

BASIC STATISTICS Activity 1 Define the following terms: 1. Statistics 2. Descriptive Statistics 3. Inferential Statistics 4. Population 5. Sample 6. Quantitative Data 7. Discrete Variable 8. Continuous Variable 9. Qualit ...

Question 1below you are given the examination scores of 20

Question 1 Below you are given the examination scores of 20 students (data set also provided in accompanying MS Excel file). 52 99 92 86 84 63 72 76 95 88 92 58 65 79 80 90 75 74 56 99 a. Construct a frequency distributi ...

Question 1 assume you have noted the following prices for

Question: 1. Assume you have noted the following prices for paperback books and the number of pages that each book contains. Develop a least-squares estimated regression line. i. Compute the coefficient of determination ...

Question 1 a sample of 81 account balances of a credit

Question 1: A sample of 81 account balances of a credit company showed an average balance of $1,200 with a standard deviation of $126. 1. Formulate the hypotheses that can be used to determine whether the mean of all acc ...

5 of females smoke cigarettes what is the probability that

5% of females smoke cigarettes. What is the probability that the proportion of smokers in a sample of 865 females would be greater than 3%

Armstrong faber produces a standard number-two pencil

Armstrong Faber produces a standard number-two pencil called Ultra-Lite. The demand for Ultra-Lite has been fairly stable over the past ten years. On average, Armstrong Faber has sold 457,000 pencils each year. Furthermo ...

Sppose a and b are collectively exhaustive in addition pa

Suppose A and B are collectively exhaustive. In addition, P(A) = 0.2 and P(B) = 0.8. Suppose C and D are both mutually exclusive and collectively exhaustive. Further, P(C|A) = 0.7 and P(D|B) = 0.5. What are P(C) and P(D) ...

The time to complete 1 construction project for company a

The time to complete 1 construction project for company A is exponentially distributed with a mean of 1 year. Therefore: (a) What is the probability that a project will be finished in one and half years? (b) What is the ...

  • 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

Why might a bank avoid the use of interest rate swaps even

Why might a bank avoid the use of interest rate swaps, even when the institution is exposed to significant interest rate

Describe the difference between zero coupon bonds and

Describe the difference between zero coupon bonds and coupon bonds. Under what conditions will a coupon bond sell at a p

Compute the present value of an annuity of 880 per year

Compute the present value of an annuity of $ 880 per year for 16 years, given a discount rate of 6 percent per annum. As

Compute the present value of an 1150 payment made in ten

Compute the present value of an $1,150 payment made in ten years when the discount rate is 12 percent. (Do not round int

Compute the present value of an annuity of 699 per year

Compute the present value of an annuity of $ 699 per year for 19 years, given a discount rate of 6 percent per annum. As