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A die was thrown 132 times and the following frequencies were observed, No. obtained: 1, 2, 3, 4, 5, 6. Frequencies: 15, 20, 25, 15, 29, 28. Total: 132 Test the Hypothesis that the die is unbiased.
engineering mathematics updated 4.2 years ago by krithikkm200 • 10
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For a normal variate with mean 2.5 and S. D. 3.5 find the probability that 1) $2 \mathrm{\le} x \mathrm{\le} 4.5$ 2) $-1.5 \mathrm{\le} x \mathrm{\le} 5.5)$.
engineering mathematics updated 4.2 years ago by krithikkm200 • 10
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A sample of 50 pieces of certain types of string as tested. The mean breaking strength turned out to be 14.5 pounds. Test the following.
engineering mathematics updated 4.2 years ago by krithikkm200 • 10
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Table below shows the performance of students in Mathematics and Physics. Test the hypothesis that the performance in Mathematics is independent of performance in physics.
engineering mathematics updated 4.2 years ago by krithikkm200 • 10
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A random sample of 900 items is found to have a mean of 65.3cms, Can it be regarded as a sample from a large population whose mean is 66.2 cms and s.d. is 5 cms at 5% level of significance.
engineering mathematics updated 4.2 years ago by krithikkm200 • 10
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In a laboratory experiment on two samples gave the following results.
engineering mathematics updated 4.2 years ago by krithikkm200 • 10
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The weights of 4000 students are found to be normally distributed with mean 50 kgs & s.d. 5kgs. Find probability that a student selected at random will have weight i) $< 45$kgs. ii) between 45 & 60 kg
engineering mathematics updated 4.2 years ago by krithikkm200 • 10
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A random variable X follows a poison distribution with variance 3 calculate p(X = 2) and p(X $\boldsymbol{\mathrm{\ge}}$ 4).
engineering mathematics updated 4.2 years ago by krithikkm200 • 10
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Two independent samples of sizes 8 and 7 gave the following results.
engineering mathematics updated 4.2 years ago by krithikkm200 • 10
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A continuous random variable with P.D.F f(x) = kx(1 - x), 0 $\mathrm{\le}$ x $\mathrm{\le}$ 1. Find K and determine a number ab such that P(x $\mathrm{\le}$ b) = p(x $\mathrm{\ge}$ b).
engineering mathematics updated 4.2 years ago by krithikkm200 • 10
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Can it be concluded that the average life span of an Indian is more than 70 years, if a random sample of 100 indians has an average life span of 71.8 years with the standard deviation of 7.8 years.
engineering mathematics updated 4.2 years ago by krithikkm200 • 10
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Tests made on breaking strength of 10 pieces of a metal wire gave the following results. 578, 572, 570, 568, 572, 570, 572, 596 and 584 in kgs. Test if the breaking strength of the metal wire can be a
engineering mathematics updated 4.2 years ago by krithikkm200 • 10
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In a test given to two groups of students drawn from two normal population marks obtained were as follows,
engineering mathematics updated 4.2 years ago by krithikkm200 • 10
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Obtain the rank correlation coefficient from the following data:
engineering mathematics updated 4.2 years ago by krithikkm200 • 10
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Find (i) the lines of regression (ii) coefficient of correlation for the following data.
engineering mathematics updated 4.2 years ago by krithikkm200 • 10
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Calculate the value of rank correlation coefficient from the following data regarding marks of 6 students in statistics and accountancy in a test.
engineering mathematics updated 4.2 years ago by krithikkm200 • 10
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What are characteristics of good graphical user interface
software engineering updated 4.2 years ago by phenjoisilab • 0
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Write a program to generate prime numbers between 1 and 100.
structured programming approach updated 4.2 years ago by phenjoisilab • 0
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Explain need of flowchart and draw a flowchart to check enter no is prime or not.
structured programming approach updated 4.2 years ago by phenjoisilab • 0
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What do you mean by recursion? Write a program, which will accept 2 nos from user say x and y. and calculate xy. Program should make use of recursion. If x is 3 and y is 4 then output should by $3^4$
structured programming approach updated 4.2 years ago by phenjoisilab • 0
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Write a program in C to cyclically rotate the elements in array.
structured programming approach updated 4.2 years ago by phenjoisilab • 0
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Write a program to calculate sum of series:
structured programming approach updated 4.2 years ago by phenjoisilab • 0
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Explain pow(), abs( ), isalnum( ) and ceil( ) function.
structured programming approach updated 4.2 years ago by phenjoisilab • 0
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Write a program to find out binary equivalent of given decimal no.
structured programming approach updated 4.2 years ago by phenjoisilab • 0
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Need of computers in industrial engineering
industrial engineering and management updated 4.2 years ago by krithikkm200 • 10
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