Questions with Complete Solutions - Hamro CSIT

Sketch the graph of 𝑓(𝑥) = 𝑥2. Find its domain and range.

Not Answered Mathematics I Asked on 2081 Exam

a) If \( \vec{a} = (4,0,3) \) and \( \vec{b} = (-2,1,5) \), find \( |\vec{a}| \), \( 3\vec{b} \), \( \vec{a} + \vec{b} \) and \( \overrightarrow{2a} + 5\vec{b} \)

Not Answered First Semester Asked on 2080 Exam

If a = (4, 0, 3) and b = (-2, 1, 5) find |a|, the vector a – b and 2a + 5b

Not Answered Mathematics I Asked on 2080 Exam

Write short notes on:

i) Parametric and non parametric test.

ii) Type I and type II error in testing of hypothesis

Not Answered No Subject Asked on 2082 Exam

Define stochastic process. In a town each day is either sunny or rainy. A sunny day is followed by another sunny day with probability 0.8, whereas a rainy is followed by sunny day is with probability 0.4. If it rains on Sunday, make forecast for Monday and Tuesday.

Not Answered No Subject Asked on 2082 Exam

A study was conducted to determine the effect of early child care on infant-mother attachment patterns. In the study, 90 infants were classified as either “secure” or “anxious” using the Ainsworth strange situation paradigm. In addition, the infants were classified according to the average number of hours per week that they spent in child care. The data were presented in the table.

Low (0-5 hours) Moderate (6-19 hours) High (20-54)

Secure 21 35 5

Anxious 10 11 8

Do the data provide sufficient evidence to indicate that there is a difference in attachment pattern for the infants depending on the amount of the time spent in child care? Use 5% level of significance.

Not Answered No Subject Asked on 2082 Exam

The following ANOVA summary table was obtained from a multiple regression model with two independent variables.

Source of Variation Sum of square Degree of freedom Mean sum of square F-value

Regression 60 ? ? ?

Error ? ? ?

Total 190 20

i) Fill in the blanks.
ii) Test the significance of the overall regression model at 5% level of significance.

Not Answered No Subject Asked on 2082 Exam

What is meant by a Randomized block design? What are the assumptions made in the analysis a randomized block design?

Not Answered No Subject Asked on 2082 Exam

In study of 200 subjects with acute ankle sprains were tested to compare two treatment methods, one (called Treatment) with oxygen at 1.2 atmosphere absolute pressure and the other (called Control) with air at 1.9 atmosphere absolute pressure in hyperbaric chamber. The subjects were divided equally in a double-blind manner between the two methods of treatment. A seven points Ankle Function Score (AFS) was tested to evaluate the effectiveness of each method and higher AFS indicates higher level of recovery. At the end, the following information was gathered.

Control Treatment

Number of subjects 100 100

Mean AFS 5.4 6.5

Standard deviation of AFS 0.8 0.6

Using 5% level of significance, test whether treatment is better than control.

Not Answered No Subject Asked on 2082 Exam

Define point and interval estimation. A sample poll of 1000 voters chosen at random from all voters in a given district indicated that 58% of them were in favor of a particular candidate. (i) Compute standard error of sample proportion of voters who are in favor of the candidate. (ii) Find 99% confidence limits for the proportion of all the voters in favor this candidate.

Not Answered No Subject Asked on 2082 Exam

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