Big Data and Predictive Analytics - Statistics Assignment Help

Assignment Task

Task

A survey is taken among customers of a restaurant to determine preference for vegetarian or non-vegetarian food. Of 100 respondents selected, 45 were male and 55 were female. 40 preferred vegetarian food and 60 preferred non-vegetarian food. Of the males, 20 preferred vegetarian food. Answer questions 1 and 2 using this survey.
1. The probability that a randomly selected individual is a male is:
a. 40/100
b. 45/100
c. 55/100
d. 60/100
2. The probability that a randomly selected individual prefers vegetarian or nonvegetarian food is:
a. 0/100
b. 40/100
c. 60/100
d. 100/100
3. If the outcome of event A is not affected by event B, then events A and B are said to be:
a. mutually exclusive
b. independent
c. collectively exhaustive
d. dependent
4. In the subjective probability approach, probabilities can vary depending on the individual assigning them.
a. True
b. False
5. The portion of the population that is selected for analysis is called:
a. a sample
b. a census
c. a survey
d. a statistics

6. The process of computing and presenting characteristics of a set of data in order to properly describe the various features of the data is called:
a. statistical inference
b. the scientific method
c. sampling
d. descriptive statistics
7. Based on the results of a poll of 500 registered voters, the conclusion that the Tory candidate will win the upcoming general election is an example of:
a. inferential statistics
b. descriptive statistics
c. a parameter
d. a statistic
8. Which of the following is a discrete variable?
a. The favourite flavour of ice cream of students at your local elementary school
b. The time it takes for a certain student to walk to your local elementary school
c. The distance between the home of a certain student and the local elementary school
d. The number of teachers employed at your local elementary school
9. Which of the following statistics is not a measure of a central tendency?
a. mean
b. median
c. mode
d. range
10.Which of the following statements about the mean is not true?
a. It is more affected by extreme values than the median.
b. It is a measure of central tendency.
c. It is equal to the median in skewed distributions.
d. It is equal to the median in symmetric distributions.
11.Which of the following measures of varia

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