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A seed company advertises that the mean time for planting to harvest for a new variety of zucchini seeds is 45 days. The standard deviation is estimated to be 10.3 day. If we wanted to verify this claim how large a sample would we need in order to state with 95% confidence that our sample mean differs from the population mean by no more than 5 days?
Probability based on a random experiment - What is the probability, without looking in the drawer
Assume that a patient is believed to have one of two diseases, denoted by D1 and D2 with P(D1)=0.40 and P(D2)=0.60 and that medical research has determined the probability associated with each symptom that may accompany the diseases.
you find a die on the street. it feels a little heavier than normal but you dont really think anything of it until you
During the period of time that a local university takes phone-in registrations, calls come in at the rate of one every two minutes.
The amount of money spent by a customer is uniformly distributed over (0, 100). Find the mean and variance of the amount of money that the store takes in on a given day.
A sample of 84 golfers showed that their average score on a particular golf course was 89.05 with a standard deviation of 3.47.
Bring to mind a research question that interests you, or a current event that utilizes statistics to present results, that you can use as an example for this discussion. State the research question or the current event and results.
At the 0.10 significance level, can we conclude that the annual rates of return are higher on the big board?
Dr. Justin Case wants to explore whether or not students perform better if they cram for a test (massed practice) or if they space their studying over weeks (distributed practice).
Identify a business research topic and define the research questions for the identified problem or opportunity
At the 0.01 significance level, is there a difference in the mean number of times men and women order takeout dinners in a month? Calculation of the p-value is not required.
a what do we understand for measures of central tendency?b what are some examples of measures of central tendency?c is
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