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Dr. H wants to conduct a statistical test that will show her new medication to be effective in decreasing violence in criminals.
a. What is the null hypothesis?
b. What is the alternate hypothesis?
She statistically shows that her medication decreases violence in criminals, but in actuality, it has no effect.
c. What type of error is this?
d. How could she statistically control for this type of error so that she is less likely to make that error in the future?>
e. Provide an example of the other type of error.
Farley purchases and pays for merchandise 60% in the month of acquisition and 40% in the following month. Accounts payable is used only for inventory acquisitions. How much cash will Farley receive during November?
Find the probability that not enough seats will be available. Is this probability low enough so that overbooking is not a real concern?
If one item is chosen at random, determine these probabilities. It is a TV
How large a sample should be selected in order to estimate the population proportion to within a margin of error of 0.02 with 97% confidence. The sample proportion from the preliminary sample was 0.18.
Suppose you are a researcher who has collected and analyzed a sample of values. When you perform a hypothesis test the p-value is calculated to be 0.051. Would you reject or fail to reject the null hypothesis? Defend your choice.
Findout either the given correlation is significant at given level of significance. Illustrate what does sample size have to do with the significance of r.
Creek Ratz is a very popular restaurant located along the coast of northern Florida. They serve a variety of steak and seafood dinners. During the summer beach season, they do not take reservations or accept a call seating.
The rejection region for a two-tail test that uses the standard normal distribution is that area under the distribution lying
What value is standard deviation for this data? What type of probability is this?
A simple random sample of 50 items from a population with σ 6 resulted in a sample mean of 32.
A system is tested for 10,000 hours and experiences 2 failures. Its failure rate is believed to be Poisson distributed.
Accident records given by an insurance company give the following information. The probability that an insured driver has an accident is 0.15. If an accident occurs, the damage to the vehicle amount to 20% of its market value 80% of the time
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