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Question: Physical Sciences Independent random samples of ore taken from two high-grade gold mines were obtained, and the gold value (in grams/tonne) was measured for each. The summary statistics were
Assume normality and unequal variances.
a. Conduct the appropriate hypothesis test to determine whether there is any evidence that the population mean gold value at the El Aguila mine is less than at the Dolaucothi mine. Use a = 0.05.
b. Your conclusion in part (a) should be that there is no evidence to suggest a difference. Explain why this result is correct even though the sample means are very far apart.
consider a bag that contains 224 coins of which 6 are rare. for the given pair of events a and b complete part a and b.
Complete the problems below and submit your work in an Excel document. Be sure to show all of your work and clearly label all calculations. All statistical calculations will use the Employee Salary Data Set.
The same probability of getting choosen. In how many different ways can the teams be chosen so taht the number of employees on each project are as follows: 5 1 10.
Find the value of the loads P that can be safely supported by the 6-in.-by-12-in. (S4S) timber beam shown. The allowable bending stress is 1800 psi and the allowable shear stress is 140 psi.
the estimated cost for a national poll is 10 per person interviewed. a project has a budget of 15000 for the poll. the
The table below lists the number of audience impressions (in hundreds of millions) listening to songs and the corresponding numbers of albums sold (in hundreds of thousands).
For every thousand dollars your predictions fall above the actual cash balances, you lose MC = $5 from your salary
Was there any difference in the nurses' preference in brand (α = 0.05)? Show all necessary components of a full hypothesis test, including a source table.
question a statistics practitioner working for mlb wants to supply radio and television commentators with interesting
Make a decision by computing the test statistic and comparing it to the decision rule. What the decision rule means in terms of the question in the problem.
Find the probability of a type II error, β, given that the true value of the population proportion is 0.72. The sample size is 50 and the significance level is 0.05.
a group of researchers studied the effect of global environmental change on grazing lands. their article reported the
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