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Statistics Week 7 Graded Assignments IIT Madras


Statistics week 7 graded assignment Complete  Solutions Are Discussed In This Blog We Hope This Might Help You All In Matching Answers . Or For Some Others Reasons Not Able To Complete Graded Assignments 

1.12 boys and 2 girls are to be placed next to each other in the school ground for morning assembly. What is the probability that there are exactly 4 boys between the 2 girls?





In a Multiple Select Question, there are 5 options of which one or more can be correct. Let us define an event E that the option ‘A’ is correct. What is the cardinality of E?

1 point


1 point

3. A person predicts daily whether the price of stocks of wrist watch companies will go up or down. If his prediction on stock price of Titan is correct 2 times out of 4, for Rolex it is correct 6 times out of 8 and for Fossil it is correct 5 times out of 9, then what is the probability that at least two of his predictions are correct on a given day?




4. There are a total of 150 students who are part of badminton, table tennis and tennis team of the college. Of which 50% of students play table tennis, 10% play tennis and 60% play badminton. It is also noticed that all students who play tennis also play table tennis but not badminton. Now a student is selected at random, what is the probability that he/she is the part of table tennis team only?(Enter the answer correct to 1 decimal place)

1 point



5. The chance that a student will clear the quiz-1 paper is 0.28 and the chance that he will clear both quiz-1 and quiz-2 papers is 0.14. The chance that he will clear at least one quiz paper is 0.41. What is the chance that he will clear quiz-2 paper?(Enter the answer correct to 2 decimal accuracy)

1 point



6. If �(�)=0.2 and �(�)=0.25 and probability of the complement of (�∪�) is 0.58, then calculate �(�∪�)?(Enter the answer correct to 2 decimal point accuracy)

1 point



7. 4 cards are drawn at random (without replacement) from a pack of 52 cards. Find the probability that, 2 are black and 2 are red. (Enter the answer correct to two decimal places)

1 point




Pramod goes to a shop to buy some clothes. Shopkeeper shows him 5 shirts, 6 pants and 13 t-shirts. If he selects three clothes at random, then find the probability that, randomly chosen clothes are of different type. (Enter the answer correct to three decimal places)

1 point

9.Pramod goes to a shop to buy some clothes. Shopkeeper shows him 5 shirts, 6 pants and 13 t-shirts. If he selects three clothes at random, then find the probability that, randomly chosen clothes does not contain pant. (Enter the answer correct to two decimal places)

1 point

Pramod goes to a shop to buy some clothes. Shopkeeper shows him 5 shirts, 6 pants and 13 t-shirts. If he selects three clothes at random, then find the probability that, at least one of the clothes is shirt. (Enter the answer correct to two decimal places)

1 point


1 point
An urn contains 3 balls numbered 1, 2 and 3. The co-efficient of equation ��2+��+�=0 is determined by drawing the numbered balls with replacement. What is the probability that the equation will have imaginary roots?

Nature of roots:

Consider a quadratic equation: ��2+��+�=0

Compute �=�2−4��<0

Roots={�<0imaginary roots�≥0real roots


1 point
If A and B are mutually exclusive or disjoint events, then which of the following is/are always true:

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