Question

1. A pharmaceutical company produces a new medicine and they claimed that it will reduce the migraine pain very fast with 𝟖𝟓% accuracy. Design a decision rule for the process with the significance 𝟎. 𝟎𝟏 by apply the medicine to 𝟏𝟓𝟎 people.

2. Let the class marks of a certain population table are 𝟏𝟕, 𝟐𝟐, 𝟐𝟕, 𝟑𝟐 & 𝟑𝟕 and the corresponding

frequencies are 𝟗, 𝟏𝟑, 𝟖, 𝟏𝟎 & 𝟏𝟓.

(i) Construct the original classes.

(ii) Draw the histogram.

(iii) Find the mode graphically.

3. Consider the following classes.

Class (43-47) (48-52) (53-57) (58-62) (63-67)

Frequency 9 8 12 6 15

(i) Sketch the histogram and derive frequency polygon from it.

(ii) Sketch the Pie chart.

(iii) Find the cumulative frequency polygon. Hence, locate the 𝑫_𝟕 and 𝑸_𝟏.

(iv) Evaluate 𝑸_𝟑, 𝑴𝒆, 𝑫_𝟕, & 𝑷_𝟖𝟕 from the cumulative frequency polygon.

Answer 1

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