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Based on a long-term investigation, researchers have suggested that the acidity (pH)of rainfall in the shenandoah Mountains can be described by the Normal model N(4.9,0.6).
a.)Draw and carefull label the model.b.)What percent of storms produce rain with pH over 6?c.)What percent of storms produce rainfall with pH under 4?d.)The lower the pH, the more acidic the rain. What is the pH level for the most acidic 20% of all storms?e.)What is the pH level for the least acidic 5% of all storms?f.)What is the IQR for the pH of rainfall?
Make a decision regarding the null hypothesis based on the sample information. Interpret the results of the test and state your conclusion.
Otherwise, no ordering will take place. Find the steady-state probabilities of the state of this Markov chain?
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If the weekly average expenditure of all households is $53,000 but an expert argues that the weekly expenditure is more than $53,000, test his claim at a 5% level of significance and interpret your results.
Determine the cutoff sample score at a significance level of 5%. Calculate a Zobt score. Compare the Zobt to the Zcrit
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What is the probability that the second one selected is defective given that the first one was defective? (c) What is the probability that both are defective?
Prepare the confidence interval of 95% for the welders' proportion that graduated in the school of welding.
A car rental company has determined that the probability a car will need service work in any given month is 0.2. The company has 900 cars.
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