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1. If you randomly sampled a population and obtained an observation equal to zero, would you believe that the population was normal with μ = 2.0 and σ2= 2.0? Why, or why not?
2. If you randomly sampled a population and obtained ten observations with a mean of zero, would you accept that the population was normal with μ = 2.0 and σ2= 2.0? Why, or why not?
3. Ten male and ten female cockroaches (Blattella vaga) were kept without food or water. Males survived an average of 4.8 days, with a variance of 0.9 days2. Females survived an average of 8.5 days, with a variance of 3.6 days2.
Females tend to be larger than males and have larger fat stores, so we might expect females to be able to survive longer, on average, than males. Test whether this is true.
a regression equation was fit to a set of data for which the correlation r between x and y was 0.6. which of the
Comparison of paired and unpaired samples test - Identify which of the two tests (Independent samples and Paired samples) test is the preferred test and justify your choice.
the next 2 questions refer to the following scenario. consider an experiment of flipping a fair coin 50 times. assign a
Data were collected for a sample of 64 customers. Assume a population standard deviation of $6. At 95% confidence, what is the margin of error?
lily estimates that her time to fall asleep each night is approximately exponentially distributed. it takes her an
The Water Authority informs Margaret that for a special fee of $6,000 this year, her farm will qualify for an additional allotment of 600 acre-feet of water. How should she respond?
analyze and discuss how organizational attitudes and ethics can play a role in your success or
when testing h0u gt u0 using confidence intervals if u is not contained in the confidence interval then we would a.
you get to choose between two envelopes each of which contains a check for some positive amount of money. unlike in the
Two mating parts have critical dimensions x1 and x2 as shown below. Assume that x1 and x2 are normally distributed with means 1 and mean2 and standard deviations s1 = 0.400 and s2 = 0.300.
Compute the within group variability. Do you require any post hoc testing? Why or why not? Decribe in detail.
Chicken Delight claims that 90% of its orders are delivered within 10 minutes of the time the order is placed. A sample of 100 orders revealed that 82 were delivered within the promised time.
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