BS101B: Business Statistics - Gauteng railway station - Business Assignment Help

Assignment Task:

Question 1:

QUESTION 2:

The exam grades (A, B, C, D and F) of 20 Grade 12 students are as follows:

2.1 What is the name given to a chart that displays: 
2.1.1 The summarised data of a single categorical variable?
2.2.2 The summarised data of a single numeric variable? 

Construct a frequency distribution table for this data and answer the questions below: 
2.2 What percentage of students received an A for their final Grade 12 exam? (2) 2.3 If F is Fail, how many students passed their Grade 12 exam?
2.4 An average percentage of 70% or higher had to be obtained to score a B. How many students obtained an average of 70% or higher? 
2.5 Show the percentage frequency table as a bar chart.

QUESTION 5:
 
5.1 Which condition needs to be satisfied with a discreet random variable to follow a binomial distribution? 

5.2 The marketing manager of a Mercedes-Benz dealership makes the statement that the probability that a customer would prefer the luxury model to the standard model of the C Class range is 25%. 
5.2.1 Calculate the probability that exactly four in a random sample of 10 customers will prefer the luxury model. (2) 5.2.2 What is the probability that more than 7 in a random sample of 10 customers will prefer the standard model? (1) 5.2.3 Calculate the probability stated in Question 5.2.2.
 
5.3 The spares department of the Mercedes-Benz dealership sells on average five car batteries per week. 
5.3.1 What is the probability that the dealer will sell no more than three batteries in a given week? (2) 5.3.2 If the dealer has four batteries in stock at the beginning of a given week, what is the probability that the dealer will run out of batteries by the end of the week?

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