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The manufacturer of a quartz travel alarm clock claims that, on the average, its clocks deviate from perfect time by 30 seconds per month, with a standard deviation of 10 seconds. Engineers from a consumer magazine purchase 40 of the clocks and find that the average clock in the sample deviated from perfect accuracy by 34 seconds in one month.
a. If the manufacturer's claim is correct (i.e., seconds, σ = 10 seconds), what is the probability that the average deviation from perfect accuracy would be 34 seconds or more?
b. Based on your answer to part (a), speculate on the possibility that the manufacturer's claim might not be correct.
For these 2,355,000 individuals, what is the probability that a randomly selected individual will either be a male or be in the life, physical, and social sciences category?
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A 95% confidence interval is not so much a statement about any particular interval, such as (79.3, 80.7), but pertains to what would happen if a very large number of like intervals were to be constructed. How are confidence intervals calculated
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the portion of people aged 18 - 25 who currently use illicit drugs is equal to 0.20 or 20.now express the null
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A Russian SVR agent has 45 million dollars which he can spend to bribe academics, politicians, and bloggers to spread disinformation and to promote anti-American propaganda
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1 you are given the following payoff tyable in units of thouands of dollars for a decision analysis problem without
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