Download PTU (I.K.Gujral Punjab Technical University (IKGPTU)) B-Tech (Bachelor of Technology) BT-Bio Technology 2020 December 3rd Sem 76945 Biostatistics Previous Question Paper
Roll No.
Total No. of Pages : 02
Total No. of Questions : 18
B.Tech. (BT) (2018 Batch) (Sem.?3)
BIOSTATISTICS
Subject Code : BTBT301-18
M.Code : 76945
Time : 3 Hrs. Max. Marks : 60
INST RUCT IONS T O CANDIDAT ES :
1 .
SECT ION-A is COMPULSORY cons is ting of TEN questions carrying TWO marks
each.
2 .
SECT ION-B c ontains F IVE questions c arrying FIVE marks eac h and s tud ents
have to atte mpt any FOUR q ues tions.
3 .
SECT ION-C contains THREE questions carrying T EN marks e ach and s tudents
have to atte mpt any T WO questio ns.
SECTION-A
Answer briefly :
1.
What is Frequency Distribution?
2.
What is Cluster Sampling?
3.
Write the definition of Range.
4.
What is Cumulative Frequency?
5.
What is Uniform Distribution?
6.
Write the difference between population and sample.
7.
Which tests are used to compare means?
8.
Name 4 parametric test for hypothesis testing.
9.
Define Skewness and Kurtosis?
10. What is Biostatistics?
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SECTION-B
11. Determine the binomial probability of getting 4 heads and 6 tails when 10 coins are tossed.
P(H) = P(T) = 0.5
12. Determine the arithmetic mean, median, mode and standard deviation and range of the
following data values : 7, 4, 4, 3, 10.
13. If, in a binomial population, p = 0.22 and n = 5, what is the probability of X = 4?
14. In a study it was found that 20% people wear spectacles. Using binomial probability find
the probability that 3 individual in a sample of 8 wear spectacles.
15. With the help of an example define data on a nominal scale.
SECTION-C
16. Four different treatments are given to four groups of patients and we wish to test whether
these treatments have had an effect on the Hb levels in the blood. Random samples of size
7 each were taken from all the groups and Hb levels were observed after one month.
Perform single factor ANOVA to find whether Hb levels are same for all the four groups.
The total sum of squares was found to be 34.6872 and groups sum of squares was 12.8929.
17. Mean weight change (weight after exercise minus weight before exercise (in g)) of twelve
rats after regimen of forced exercise is ?0.65 g while the variance of weight change is
1.5682 g2. Perform a two-tailed test for significant difference in weight change where the
hypothesized weight change is zero at 0.05 level of significance.
18. Differentiate between population and sample. Also explain random sampling.
NOTE : Disclosure of Identity by writing Mobile No. or Making of passing request on any
page of Answer Sheet will lead to UMC against the Student.
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This post was last modified on 13 February 2021