Download PTU (I.K. Gujral Punjab Technical University Jalandhar (IKGPTU) ) BE/BTech Bio-Technology (Biotechnology Engineering) 2020 March 4th Sem BTBT 401 Biostatistics Previous Question Paper
Roll No. Total No. of Pages : 02
Total No. of Questions : 09
B.Tech.(BT) (2012 to 2017) (Sem.?4)
BIOSTATISTICS
Subject Code : BTBT-401
M.Code : 55084
Time : 3 Hrs. Max. Marks : 60
INSTRUCTIONS TO CANDIDATES :
1. SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks
each.
2. SECTION-B contains FIVE questions carrying FIVE marks each and students
have to attempt any FOUR questions.
3. SECTION-C contains THREE questions carrying TEN marks each and students
have to attempt any TWO questions.
SECTION-A
1. Write briefly :
a) Polygon curves
b) Standard deviation
c) Skewness
d) Geometric mean
e) Shanon-Weaver index
f) Bayes? theorem
g) Null hypothesis
h) Spearman rank correlation
i) Paired ?t? test
j) Contingency table
SECTION-B
2. Briefly describe the probability laws with suitable examples.
3. What is Poisson distribution? Emergency hospital admissions in Japan with heart
diseases are found to follow Poisson distribution. An investigation showed that an
average there are four admissions per day. Find the probability that exactly three
emergency admissions will occur in a given day.
FirstRanker.com - FirstRanker's Choice
1 | M ? 55084 (S2)-1651
Roll No. Total No. of Pages : 02
Total No. of Questions : 09
B.Tech.(BT) (2012 to 2017) (Sem.?4)
BIOSTATISTICS
Subject Code : BTBT-401
M.Code : 55084
Time : 3 Hrs. Max. Marks : 60
INSTRUCTIONS TO CANDIDATES :
1. SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks
each.
2. SECTION-B contains FIVE questions carrying FIVE marks each and students
have to attempt any FOUR questions.
3. SECTION-C contains THREE questions carrying TEN marks each and students
have to attempt any TWO questions.
SECTION-A
1. Write briefly :
a) Polygon curves
b) Standard deviation
c) Skewness
d) Geometric mean
e) Shanon-Weaver index
f) Bayes? theorem
g) Null hypothesis
h) Spearman rank correlation
i) Paired ?t? test
j) Contingency table
SECTION-B
2. Briefly describe the probability laws with suitable examples.
3. What is Poisson distribution? Emergency hospital admissions in Japan with heart
diseases are found to follow Poisson distribution. An investigation showed that an
average there are four admissions per day. Find the probability that exactly three
emergency admissions will occur in a given day.
2 | M ? 55084 (S2)-1651
4. The Birth and death rates of five countries are given below. Calculate the correlation
coefficient between birth and death rates
Details/countries 1 2 3 4 5
Birth Rate (x) 30 41 13 15 11
Death Rate (y) 11 15 10 9 7
5. What is normal curve? Briefly describe its importance and distributions of variables in a
normal distribution curve.
6. The mean birth weight and the standard deviation of high socioeconomic group is
2.91 ? 0.27 (n=15) and low socioeconomic group is 2.26 ? 0.22 (n=10). Test whether the
mean difference in birth weight is significant between the socioeconomic groups.
SECTION-C
7. The following scores represent a nurse?s assessment (X) and a physician's assessment (Y)
of the condition of 10 patients at time of admission to a trauma center. Calculate the
regression equation of ?Y? on ?X? and ?X? on ?Y? and correlation coefficient.
8. What is Chi square test? Briefly mention its importance. Suppose you conducted a drug
trial on a group of animals and you hypothesized that the animals receiving the drug
would show increased heart rates compared to those that did not receive the drug. Is there
a relationship between the drug and heart rates? Use ?
2
test.
Heart Rate Increased No Heart Rate Increase Total
Treated 36 14 50
Not treated 30 25 55
Total 66 39 105
9. Briefly mention the importance of one-way ANOVA. An experiment was conducted to
test the effect of 4 different treatments to increase mental ability of children. Test whether
there is any significance among the treatments using one-way ANOVA.
Treatment 1 Treatment 2 Treatment 3 Treatment 4
15 12 10 14
20 17 15 20
16 11 12 16
19 18 14 18
19 16 14 13
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..
Subjects 1 2 3 4 5 6 7 8 9 10
X 17 13 18 15 11 12 8 4 7 2
Y 23 19 18 17 14 11 10 6 6 4
FirstRanker.com - FirstRanker's Choice
This post was last modified on 21 March 2020