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Given n = 10, σ x = 4.5, σ y = 3.6 and sum of the product of deviation from the mean of X and Y is 64 find the correlation co-efficient.
A random sample of 10 boys had the following I.Q’s 70, 120, 110, 101, 88, 83,95, 98, 107, 100. Do these data support the supposition of a population mean I.Q. of 100.
A manufacturer claims that at least 95% of the equipment which he supplies to a factory conforms to specifications. An examination of a sample of 200 pieces of the equipment revealed that 18 were fa
Give the differences between interval estimation and Bayesian estimation?
A random sample of size 100 is taken from an infinite population having the mean 76 and the variance 256. Determine the probability that the sample mean will be between 75 & 78.
A, B & C in order toss a coin. The first one to toss head wins the game. What is the probability that A’ starts the game & ‘B’ wins the game.
A research project was undertaken to determine if there is relationship between the years of experience on the job (A) and efficiency rating of employees (B). Years of Job (A) 1 20 6 8 2 1 14 8 4 6
Prof. Hardtack gave four Friday quizzes last semester in his 10-student senior tax accounting class as follows: Quiz 1 60 60 60 60 71 73 74 75 88 99. Calculate the mean, median, mode for each q
Assume that pennies were used as weights for balances. What would be the precision of the measurement of mass in this case?
Mr. LePew, the advertising manager of a medium sized manufacturer of rug and room deodorizers, has developed three preliminary advertising campaigns for the company’s line of deodorizers. Adv
Why is it significant to understand concept of Central Tendency, Dispersion, Skewness and Kurtosis of any distribution.
Formulate the linear programming model for the problem.
What is skewness? Describe the different methods of measuring skewness. What is statistical table? How is it constructed? Explain the requisites of a good statistical table.
Calculate the ANOVA and interpret your result. You might like to use the values given at the end.
Calculate the expected value and the standard deviation of X.
Use regression models developed, along with Worksheet “Case a” to predict monthly profit for each of the 20 stores.
Explain the main components of a deterministic time series. How far are such methods effective in forecasting?
Distinguish between the following: Big Sample and Small Sample, Nominal Scale and Ordinal Scale and Knowledge & Science
Explain research problem. What are the different sources of research problems?
Describe the meaning of statistics and describe its scope and use.
With the help of significant scatter diagrams describe negative correlation, positive correlation, and no correlation. What are the (ranges) numerical values which depict positive correlation, negativ
Find out the standard deviation and coefficient of skewness for the given distribution
Total scores X obtained by 50 students in Statistical Technique test of 100 marks are given below: 80 90 85 55 40 &nb
What do you mean by the term statistical survey? Describe different sampling methods.
Following data are given for marks in the subject A and B in the certain examination: MEAN MARKS 36, 85. Coefficient of correlation between A and B = ±0.66. Determine the two equations of regr