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The Cooper Auto Repair Center has just received a shipment of 1,000 spark plugs from a supplier. In past shipments, the gap in 6% of the spark plugs obtained from the supplier has been set incorrectly.
A) In the new supply, what is the expected number of misgapped plugs?
B) What is the probability that there will be 50 or fewer misgapped plugs?
C) What is the probability that there will be 74 or more misgapped plugs?
Suppose the national average for all young adults is 3.7 hours, and the magazine wishes toclaim that their subscribers exercise more on average. State the relevant hypotheses to test this claim. Specifically define any symbols you use.
When combining probabilities, to find the probability of one event AND another event, the separate probabilities should be:
Find the critical value to test the claim that all ages have purchase rates proportional to their driving rates.
Measures the discrepancy b/w the data and the null hypothesis. We can make large values of T are evidence against H0 in most cases. Explain why?
If 2 circuit boards are selected at random without replacing the first, what is the probability both circuit boards are defective?
Can you provide a clear, concise interpretation for the slope coefficient on price? Is that coefficient significantly different from zero? How do you know that?
Class of 22 obtains a mean of 92 and a standard deviation of 4. Is he correct in assuming that the performance of the most recent class is significantly better than that of other classes?
The manager wants to adjust the mean to reduce the reject rate. Compute the probability of underfilling for several values of the mean fill.
coefficient of variation and standard deviation are two measures of dispersion or spread among the data values. lets
Is there sufficient evidence at the alpha =0.05 level to support the researcher's claim?
The inventory value is estimated by the sum of book values of population and N-D, where N is population size at top ,D at bottom. show that the estimate is unbiased. Find an expression for the variance of the estimate.
Probability that the flavor will be carried by Appleton or Beacon is 15/16. Determine the probability a flavor is carried by both Appleton and Beacon.
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