\fQuestion 33 In the calculation of the arithmetic mean for grouped data, which value is used to represent all the values in a Not yet answered particular class? Marked out of 1.00 Flag question Select one: a. The frequency of the class b. The class midpoint. c. The cumulative frequency preceding the class d. The upper limit of the classQuestion 35 A random sample of 15 observations produced a sample mean of x = 92.4 and s = 27.8. What is the value of the Not yet answered standard error of x? Marked out of 1.00 Flag question Select one: a. 1.3 b. 5.8 C. 7.2 O d. 4.6Question 36 The following table gives the ages (in years) of the 100 persons in a town involved in road accidents during a Not yet answered particular year. Marked out of 3.00 Flag question Age (years) Frequency 10 up to 20 15 20 up to 30 40 30 up to 40 25 40 up to 50 12 50 up to 60 8 Based on the given data, find the median age of people who involved in road accidents. Select one: a. 28.75 years b. 25 years O c. 30 years O d. 32.75 yearsQuestion 3 1 Not yet answered Marked out of 2.00 '7 Flag question Question 38 Not yet answered Marked out of 3.00 P Flag question According to a securities commission ofcer, the use of insider knowledge has beneted 55 percent of all investment bankers. Assume that 25 investment bankers from the commission's registry are chosen at random. How many investment bankers are expected to have benetted from the exploitation of insider information? Select one: a. 15.56 b. 12.81 c. 11.58 d. 16.25 A catering company is planning to open a new outlet at a developing industrial area in the centre of city. After conducting extensive market surveys, the research department provides the following estimates: a weekly demand of 80 packages at a price of RM350 per package and a weekly demand of 120 packages at a price of RMBOO per package. assuming the relationship between the price (p) and the demand (x) is linear, derive the pricedemand function, p=a+bx. Select one: a. p= 450 + 1.25x b. p= 450 1.25x c p: 400 + 2.25x d. p= 400 - 1.25x Question 40 Table below shows the advertising expenditure per month and the number of units of houses sold by a well- Not yet answered known real estate company for nine consecutive months. Marked out of 3.00 Advertising expenditure 23 24 20 21 30 19 27 31 32 per month, ($'000) Flag question Number of houses sold 50 62 43 40 74 34 63 70 68 Find the linear regression equation for the two variables. Select one: O a. y = 2.76x -13.52 b. y = 2.76 -13.52x O c. y = 13.52 - 2.76x O d. y = 13.52 + 2.76xQuestion 41 A college found that 25% of it's students withdraw without completing the introductory English course. Assume Not yet answered that 15 students registered for the course, compute the probability that not more than two will withdraw from the course. Marked out of 2.00 Flag question Select one: a. 0.2360 b. 0.2252 c. 0.2089 O d. 0.0004Question 43 A graph that can be used to determine if two variables are related is called a Not yet answered Marked out of 1.00 Flag question Select one: a. Histogram b. Multiple bar chart c. Scatter plot d. Ogive Question 44 To be eligible for insurance officers' training, employees are tested for anxiety acceptance level. The results are Not yet answered normally distributed, with a mean of 62 and a variance of 64. If only the top 15% of employees are selected, find the cutoff end result. Marked out of 3.00 Flag question Select one: a. 70.32 b. 53.71 c. 64.93 d. 62Question 45 A local hotel reduces the prices of all types of rooms by 30% during the low season, with an additional 10% trade Not yet answered discount and a 5% cash discount. What will Ms. Jessi spend in cash for a room at a list price of RM 450 if she qualifies for the trade discount? Marked out of 2.00 Flag question Select one: a. RM256.75 b. RM299.99 c. RM269.33 d. RM245.55