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A company that manufactures fluorescent light bulbs claims that the bulbs will operate for 10,000 hours. However engineers, familiar with the production process, used to believe that, on average, the company's light bulbs last for less than 10,000 hours. To test this hypothesis, 50 light bulbs were randomly selected and their lifespans were recorded. The data resulted in a sample mean of 9875 hours. You are interested in whether there is sufficient evidence to conclude that the true mean lifespan of the company's light bulbs is less than 10,000 hours.
If the p-value for the test were 0.119, what would be the test statistic for the test?
a) -1.960
b) -1.180
c) -2.240
d) Not enough information to answer the question.
e) None of the above are correct.
How can Carrie's Custom Clothing benefit from BI? Be specific as to how BI can benefit her company - no general answers here. List at least 3 ways they can use BI explaining the benefits of each way.
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How does your saving and spending profile change depending on the state of the economy, whether the economy is in a recession versus expansion?
Consider a firm with market power that sells suits. The firm has two types of customers, A and B. There are five times as many type-A customers as there are type-B customers. Type-A customers are willing to pay up to $100 for a coat and up to $50 for..
Deficit Reduction: Good or Bad for Investment? You may have heard this argument in some form before
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