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Ballast must weigh 150kg. It can be made from two raw materials, A (with a cost of Rs. 20 per unit) and B (with a cost of Rs. 80 per unit). At least 14 units of B and no more than 20 units of A must be used. Each unit of A weighs 5 kg and each unit of B weighs 10 kg. How many units of each type of raw material requires?
We want to test the hypothesis that the population variances are equal.
What is the possibility that for a arbitrarily selected customer the service time could exceed 3 minutes?
How does the efficiency of a regression predict the power of the t-test? How do robust standard errors change the comparison between hypothesis testing using OLS and robust regression? What does dependence in the e do to the t-test? what does non-no..
What are the singleton subsets of X and Y? are the empty set and the sample space the singleton subsets?
What kind of correlation do you expect to find between annual income and amount spent on car? Will it be positive or negative?
Suppose there is no cyclical component. Quarterly billing for water usage is shown below describe summer billing for year 5.
the null hypothesis is to be tested at 95% confidence. Determine the critical value(s) for this test.
Let X be the number of gallons of ice cream that is requested at a certain store on a hot summer day. Assume that f(x)= 12x(1000-x)^2/10^12, 0
The data (in milliamps) are shown below. Using the .05 level of significance, are there any differences in the three categories.
Find the probability that a randomly selected student is a nursing major. Find the probability that a randomly selected student is a nursing major given that the student is a male.
Calculate P value? Calculate critical value?
The rate of service calls per month was researched yielding the following results (no of service calls divided by the number of equipment): Do these data indicate that the program is effective?
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