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  3. the manager of the burrard credit union wishes to

The manager of the Burrard Credit Union wishes to know if there is a significant difference between...

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Question

Statistics

The manager of the Burrard Credit Union wishes to know if thereis a significant difference
between male and female customers’ interest in a proposed new typeof savings certificate. A
survey of 200 randomly selected customers has yielded the followingdata:

INTEREST

SEX Strong Moderate Weak Total
Male 30 25 25 80
Female 60 40 20 120
Total 90 65 45 200

(a) What percentage of customers shows a strong or moderateinterest in these savings
certificates? [2 marks]

ANSWER

(b) What percentage of customers is male AND shows a strong ormoderate interest in
these savings certificates? [2 marks]

ANSWER

(c) What percentage of male customers do NOT show a stronginterest in these savings
certificates? [2 marks]

ANSWER

(d) Among those customers who show a weak interest in thesetypes of savings certificates,
what is the probability that they are a female?

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