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1. STATISTICAL CONCEPTS AND THEIR
APPLICATIONS IN BUSINESS
INTRODUCTION TO ANALYTICS
Part 11

2. From the research question below, choose the alternative hypothesis from the followingoptions.
Given a sample of body temperatures of 50 persons, and the average temperature μ0 , decide if the
average body temperature has increased over time.
a. μ =μ0
b. μ >μ0
c. μ <μ0
d. μ ≠μ0
Answer:b.
Explanation: The question forms a one sided hypothesis, checking if the average
temperature has increased, that is, if μ >μ0
QUIZ
4

3. Choose the commonly used value for significance level α from the values given below
a. 0.1
b. 0.5
c. 1.0
d. 0.05

4. Choose the commonly used value for significance level α from the values given below
a. 0.1
b. 0.5
c. 1.0
d. 0.05
Answer:d.
Explanation: The commonly used value for significance levels are 0.01 and 0.05.

5. Choose the right answer – Non parametric tests can also be referred to as?
a. Distribution free
b. Deviation free
c. Dispersionfree
d. Decisionfree

6. a. Distribution free
b. Deviation free
c. Dispersionfree
d. Decisionfree
Answer:a.
Explanation: Non parametric tests are distribution free
Choose the right answer – Non parametric tests can also be referred to as?

7. a. Estimation
b. Hypothesis testing
c. Dispersion
d. Data mining
Descriptive statistics measures which of the following?

8. a. Estimation
b. Hypothesis testing
c. Dispersion
d. Data mining
Answer:c.
Explanation: Descriptive statistics deals with the measure of dispersion.
Descriptive statistics measures which of the following?

9. a. A fixed number of trials
b. Each trial is independent of the others
c. The probability of each outcome remains constant from trial to trial.
d. Normaldistribution
Which of the following conditions binomial distribution does not satisfy?
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10. a. A fixed number of trials
b. Each trial is independent of the others
c. The probability of each outcome remains constant from trial to trial.
d. Normaldistribution
Answer:d.
Explanation: Normal distribution. Rest of the things are satisfied by binomial distribution.
Which of the following conditions binomial distribution does not satisfy?
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11. Probability of an event always lies between?
a. 0 and 1
b. -1 and 1
c. Negative and positive
d. Only positive
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12. a. 0 and 1
b. -1 and 1
c. Negative and positive
d. Only positive
Answer:a.
Explanation: The probability of an event always lies between 0 and 1, i.e. failure and success
of that event
Probability of an event always lies between?
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13. Which is not a part of descriptive statistics?
a. Sample
b. Measure of central tendency
c. Measures of dispersion
d. Hypothesis testing
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14. Thank You
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