Cable companies-normal distribution

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Reference no: EM1392260

According to the Yankee group, 53% of all cable households rate cable companies as good or excellent in quality transmission. Sixty percent of all cable households rate cable companies as good or excellent in having professional personnel. Suppose 300 cable households are randomly contacted?

a. Critically discuss the probability that more than 175 cable households rate cable companies as good or excellent in quality transmissions?

b. What is the probability that between 165 and 170 (inclusive) cable households rate cable companies as good or excellent in quality transmissions?

c. What is the probability that between 155 and 170 (inclusive) cable households rate cable companies as good or excellent in having professional personnel?

d. What is the probability that fewer than 200 cable households rate cable companies as good or excellent in having professional personnel?

Reference no: EM1392260

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