Mathematics, 20.12.2019 23:31 sashie0
An insurance company states that 90% of its claims are settled within a month. a consumer group selected a random sample of 75 of the company’s claims to test this statement and found that only 55 of the claims were settled within a month.
(a) (12 points) at a 5% level of significance, does the consumer group have sufficient evidence to support their contention that fewer than 90% of the claims are settled within a month? find also the p-value
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