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A sample of 200 elements from a population with a known standard deviation is selected. For an interval estimation of m, the proper distribution to use is the:
a. normal distribution
b. t distribution with 200 degrees of freedom
c. t distribution with 201 degrees of freedom
d. t distribution with 202 degrees of freedom
Give critical test statistic and compute sample test statistic. Test null hypothesis at alpha level .01.
Develop four probability questions using the table that you as an instructor of statistics might ask a class of students for a test in probability.
Ffind the probability that exactly 7 of the 10 consumers recognize the brand name. Also find the probability that the number who recognize the brand name is not 7.
a box contains 10 chips. the chips are numbered 1 through 10. otherwise the chips are identical. from this box we draw
If random sample of 9 loads is selected for a weight check, determine the probability that mean weight of those loads is more than 40.60 tons.
question consider the following population71 89 65 97 46 52 99 41 62 8873 50 91 71 52 86
Which promises the profit of $24,000 with the probability of .7 or a loss (due to bad weather, strikes, and such) of $8000 with the probability of .3. Determine the expected profit?
A. At first glance, does there seem to be a pattern to the relationship between the insurance premiums for males and females? Describe it.
Mean=63.6 Standard deviation=2.5 If 36 data points are arbitrarily chosen, determine the probability that mean is less than 64.
Which one/s of these factors (independent variables) will have a negative correlation with bone density and which one/s will have a positive correlation?
How many people must be surveyed if we want to estimate the percentage who weigh more than 180 pounds? Assume that we want 96% confidence.
Test the hypothesis of no differences for average payback period (years) necessary to justify solar heating systems for residences.
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