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The life span of a battery is normally distributed with a mean of 2500 hours and at percent of batteries have a life standard deviation of 50 hours. What percent of batteries have a life span that is more than 2560 hours? Would it be unusual for a battery to have a life span that is more than 2560 hours? Explain your reasoning.
People who answered incorrectly, 26 are men. The question was given to an equal number of men and women all with the same IQ. Find the probability that among 120 wrong answers, at least 82 made by men.
What specific type of visually reported data might you use? What type of decision would you expect from those responding to your visually reported data?
Compute the optimal production quantities for the company?
Using the Census data, the OH Registry of Motor Vehicles reveal the subsequent about the Autos owned by the 10 families residing in Smallville.
If you are using the method of least squares for fitting trends in an annual time series containing 25 consecutive yearly values.
Before starting the trial, a pilot study is conducted involving 7 participants. Is there a statistically significant difference in blood pressures overtime? Run the test at a 5% level of significance.
Test hypothesis that mean weight of 2 sheets are equal against alternative that they are not(suppose equal variances). Use α=0.05 and suppose equal variances. Determine the P value.
Assuming that a hypothesis test of the claim has been conducted and that the conclusion is failure to reject the null hypothesis, state the conclusion in nontechnical terms.
If there is an outage, there is a .05 probability that the resulting losses will be very large, approximately $ 80 million in lost earnings. Also, it is estimated that there is a .95 probability of only slight losses of around $ 1 million. What is..
In summer 2000, a growing number of warranty claims on Firestone tires sold on Ford SUVs prompted Firestone and Ford to issue a major recall. An analysis of warranty-claims data helped identify which models to recall.
Historically, my HRV fleet averaged 40,000 miles between breakdowns with a 8000 mile standard deviation. I implemented Continuous Improvement teams to research better inspection methods and after the kaizen, I sampled, randomly 30 HRV cars and found ..
What is the probability that exactly 7 cabinets are defective? What is the probability that there are more than 8 defective file cabinets?
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