Question 5 Exhibit 2-1 2 points Save Answer The numbers of hours worked (per week) by 400 statistics students are shown below. Number of hours Frequency 0 - 9 10 - 19 20 80 20 - 29 30 - 39 200 100 Refer to Exhibit 2-1. The cumulative relative frequency for the class of 20 - 29 O a. is 0.5 O b. is 0.75 O c. is 300 O d. is 0.25Lu> A Moving to another question will save this response. > Question 7 2 points Save Answer Exhibit 2-4 A survey of 400 college seniors resulted in the following crosstabulation regarding their undergraduate major and whether or not they plan to go to graduate school. Undergraduate Major Graduate School Business Yes Engineering Others Total 35 No 42 63 140 91 104 Total 65 260 126 146 128 400 Refer to Exhibit 2-4. Of those students who are majoring in business, what percentage plans to go to graduate school? O a. 72.22 O b. 8.75 O c. 70 O d. 27.78Question 24 4 points Save Answer The returns for a pharmaceutical firm are: -5% in Year 1, 4% in Year 2, -7% in Year 3, 5% in Year 4, and 8% in Year 5. Fill in the Blank: Use Excel to answer the following question. In your answer, show one (1) digit to the right of the decimal point, for example, 1.0, 1.2. Apply the appropriate rounding rule if necessary. Use the "Format Cell..." option in Excel to show the required number of decimal places (Excel will automatically round the number up or down). Do not show any symbols (%) or words in your answer. What is the average annual rate of return (in %) for the period?Question Completion Status: A Moving to another question will save this response. > Question 34 2 points Save Answer If the data distribution is symmetric, the skewness is O a. 0 O b. .5 O c. 1 O d.-.5