**MA8452 SNM Important Questions**

Anna University Regulation 2017 MECH **MA8452 SNM Important Questions with Answer Key** and **MECH 4th Sem MA8452 STATISTICS AND NUMERICAL METHODS Engineering Answer Key** is listed down for students to make perfect utilization and score maximum marks with our study materials.

**MA8452 SNM STATISTICS AND NUMERICAL METHODS **

1. What are the parameters and statistics in sampling?

2. Mention the various steps involved in testing of hypothesis

3. What are null and alternate hypothesis?

4. What is the essential difference between confidence limits and tolerance limits?

5. Define the following terms (i)Standard error (ii)Random sampling

6. State level of significance.

7. Twenty people were attacked by a disease and only 18 were survived. The hypothesis is set in such a way that the survival rate is 85% if attacked by this disease. Will you reject the hypothesis that it is more at 5% level.(Z0.05 =1.645)

8. A random sample of 25 cups from a certain coffee dispensing machine yields a mean x = 6.9 occurs per cup. Use 0.05 level of significance to test, on the average, the machine dispense μ = 7.0 ounces against the null hypothesis that, on the average, the machine dispenses μ < 7.0 ounces. Assume that the distribution of ounces per cup is normal,

and that the variance is the known quantity σ2=0.01 ounces.

9. In a large city A, 20 percent of a random sample of 900 school boys had a slight physicaldefect. In another large city B, 18.5 percent of a random sample of 1600 school boys had somedefect. Is the difference between the

proportions significant?

10. A standard sample of 200 tins of coconut oil gave an average weight of 4.95 kg with a standard deviation of 0.21 kg. Do we accept that the net weight is 5 kg per tin at 5% level of significance?

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Anna University MECH SNM Important Questions Regulation 2017

MA8452 Answer Key, SNM Unit wise Important Questions- MECH 4th Semester