According to a study carried out by the firm Optima Groupe Conseil for the newspaper Les Affaires, the average income per household in the Trois-Rivieres-Ouest geographic area is $ 55,577 (this value was obtained from the Statistics Canada database - 2001 census). Let us assume that the standard deviation of the income per household is $ 4,000.
A random sample of 64 households in this geographic area is collected.
- a. What are the parameters of the sampling distribution of the variable "average income per household" for a sample of size n = 64? (1 point)
- b. What assumptions and conditions are required to answer c) and d)? (1 point)
- c. What is the probability that the average income in the sample per household in the Trois- Rivieres-Ouest geographic area will be less than $ 54,777? (2 points)
- d. What is the probability that the average income in the sample per household in the Trois- Rivieres-Ouest geographic area is between $ 54,327 and $ 56,827? (2 points)
According to a study carried out by the firm Optima Groupe Conseil for the newspaper Les Affaires, the average income per household in
geographic area is $ 55,577 (this value was obtained from the...
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