1. Community radio hosts want to know the song number 1 on their Top 5. They ask listeners to call them for their announce their choice. Due to the large number of calls, they decide to answer all 3 calls.

a) Which sampling method is it?

b) Will this survey yield valid results? Justify your answer.

2. Mathieu would like to organize an event bringing together several teams French-language schools across Ontario. He will name the event "Franco-sport". He would like the event to do rage and becomes an annual gathering of different sports teams.

a) Formulates a question that could be analyzed statistically and would help organize the event. The question should specify the object of your research and define the population.

b) Describe the population under study.

c) Identify the variables.

d) Determine whether the data will be quantitative or qualitative. In the case quantitative data, indicates whether it is discrete data or continue. Explain your answer.

e) Specify the sampling method.

f) Describe the sample.

3. Briefly explain the meaning of the following statement.

As a result of a survey, it was found that 30% of students obtained an average score above 72%. The confidence level of the survey is 95% with a margin of error of plus or minus 5%.

4. The masses of 29 newborns at Hotel Dieu Hospital follow the curve of normal distribution with a mean mass of 3.34 kg and a standard deviation of 0.3kg. What is the approximate number of newborns whose mass is located: (a) between 3.18 kg and 3.63 kg;

(b) is less than or equal to 3 kg.

5. Identify the scatter plot that has a positive correlation, a negative correlation and zero correlation. Justify your choices.

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