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Please just answer the question with the corresponding letter. DO NOT explain the answer. All that is needed is for you to provide the answer.

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Please just answer the question with the corresponding letter. DO NOT explain the answer. All that is needed is for you to provide the answer.

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The process of using sample statistics to draw conclusions about true population parameters is called: 0 a. sampling. 0 b. the scientific method. 0 c. descriptive statistics. 0 d. statistical inference. A numerical measure that describes a characteristic of the whole population is called: O a. A parameter O b. A statistic O c. A census O d. A sampleThe monthly losses (in $1000s) of 30 managed funds during the 2008 credit crunch is shown below: 24 20 31 32 32 35 36 39 40 41 41 44 45 46 47 47 48 49 50 51 51 52 53 54 54 55 56 60 60 65 Part of the frequency distribution for the data are given below: 40 but less than 50 50 but less than 60 60 but less than 70 The number of managed funds with monthly losses of $30,000 or more but less than $60,000 is: O a. 16 O b. 6 O c. 28 0 d. 25 Temperature in degrees Fahrenheit is an example of what level of data measurement? 0 a. nominal O b. ordinal O c. interval 0 d. ratio A company responds to 80% of all enquiries within 2 working days. The firm received 8 enquiries today. What is the probability that all the 8 enquiries are responded within 2 working days? 0 a. 0.3356 0 b. 0.0839 0 c. 0.6422 0 d. 0.1678 Let A be the event that a student is enrolled in an accounting course, and let S be the event that a student is enrolled in a statistics course. It is known that 30% of all students are enrolled in an accounting course and 40% of all students are enrolled in statistics. Included in these numbers are 15% who are enrolled in both statistics and accounting. From the above information it can be concluded that Select one: 0 a. A and S are complements Ob. A and S are not independent 0 C' A and S are mutually exclusive 0 d. A and S are independent A manager of a company was concerned about the quality of products produced through a newly purchased machinery. To investigate the percentage of defective items, she collected a random sample of 200 products produced by this machine. The total number of defective items found in the sample is an example of: a discrete random variable 0 b' a continuous random variable a categorical random variable 0 d. aparameter The number of sunny days during the past 6 months in a city are 12 8 17 18 10 13 What is the sample variance? O a. 3.899 O b. 12.67 O C. 3.56 Od. 15.2The Dean of Students mailed a survey to a total of 400 students. Assume there is an equal number of students in the accounting, economics, management and marketing majors. The sample included 100 students randomly selected from each of these majors. What sampling method was used? Select one: 0 a. judgmental O b. stratified O c. systematic Od. cluster The number of rainy days during the past 6 months in a city are 12 8 17 18 10 13 What is the first quartile (Q1)? O a. 9.5 O b. 10 O c. 11 O d. 9

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