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Problem 3 SVEN COOP wants to study the relationship between sales promotions and customer’ssatisfaction. SVEN COOP...

Problem 3
SVEN COOP wants to study the relationship between sales promotions and customer’ssatisfaction. SVEN COOP
collected information from a random sample of 14 customers and the correlation coefficient was r = 0.62. At the
0.1 significance level, can we conclude that the population correlation is positive?
Problem 4

An agent for a real estate company wanted to study the relationship between monthly rental cost for apartments
and the size of an apartment as defined by square footage. For a sample of 4 apartments, the correlation was 0.93.
At 0.01 level of significance, can we conclude that the correlation in the population is different from zero?

Math   Statistics-And-Probability   
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