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The sate narcotics bureau must form a 5-member investigative team. If it has 31 agents from which to choose, how many different possible teams can be formed?
suppose xyand c represent the length width and perimeter of a flat rectangular sheet metal part. note that xis a normal
Consider the following two plots, which show normal and half-normal plots of the effects from an unreplicated 25factorial design. The effects are numbered starting with A as 1 and are in standard order. What would you conclude?
In a raffle, 1,000 tickets are sold for $2 each. One ticket will be randomly selected and the winner will receive a laptop computer valued at $1200. What is the expected value if a person buys one ticket?
What are the advantages and disadvantages of each? Explain how the empirical rule help explain the ways in which the values in a set of numerical data cluster and distribute?
You just finished getting your data, made sure there were no fliers and the data was correct You created a mean and standard deviation and ran your Z test at the 0.05 alpha Your decision rule is 1.645 and your Z test statistic ( step 3 ) is 1.647
a calculate a confidence intervals for p1 at 1 significance level. mu 395625 sd78550. are the confidence intervals
On the basis of the values of z* found in parts (a) through (c), explain what happens to the width of the confidence interval when the confidence level is increased.
Items that fail during the test are not replaced. Determine the plan, using Handbook H-108, if the sample size is to be five times the rejection number.
Why might a t test not be very useful in this case?
The mean score in the male group was 84±4.0 (M±SD); in the female group, it was 78±8.0 (M±SD) points. If the null hypothesis is that there is no difference in exam scores, then test the null hypothesis at a 0.05 level of significance.
A behavioral research situation that could use a Pearson coefficient research study and a chi square research study. Present the rationale for each selection.
Let X1, X2, . . . , Xn be independent, continuous random variables with common distribution function F(x), and consider the order statistic (X(1), X(2), . . . , X(n)). Compute E(F (X(n)) - F (X(1))).
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