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In a particular region of Cape Cod, it is known that lobstermen trap on average of 32 pounds of lobster per day with a standard deviation of four pounds. If a random sample of 30 lobster fishermen is selected, what is the probability that their average catch is less than 31.5 pounds?
Round your answer to four decimal places. Simply provide the numerical value. For example, 0.1234 would be a legitimate entry.
Give critical test statistic and compute sample test statistic. Test null hypothesis at alpha level .01.
Based on this sample information find out what percent of variation in starting salaries is described by GPA, and find out the equation that would forecast salary from GPA. Give a scatter plot.
Duracell Ltd claim that the life of their batteries in motorised soft toys is approximately normally distributed with a mean of 102.9 hours and a standard deviation of 16.5 hours.
A study of the amount of time it takes a mechanic to rebuild the transmission for a 1992 Chevrolet Cavalier shows that the mean is 8.4 hours and the standard deviation is 1.8 hours.
Given 5,000 light bulbs from an outside supplier. If past performance data indicates that these have been 3% defective, and a random sample of 40 parts are drawn from the shipment what is the probability that you will find more than 2 defective pa..
Is it possible to provide a meaningful interpretation of the intercept of the sample regression line? Explain.
The amount of corn chips dispensed into a 10 ounce bag by the dispensing machine has been identified at possessing a normal distribution with a mean of 10.5 ounces and a standard deviation of .2 ounces.
What are the main drivers of uk banks' profitability? what are the implications of increased concentration in the uk banking market? what were the main recommendations of the cruickshank report and how did the industry respond?
Which is the probability of that the median of the sample or average medians be between 320 and 350 minutes?
Utilizing your charts stated whether the filling operation has been in control for every of the 18 operating hours this day.
Do these results suggest that the racial makeup of the faculty members is different from that of the students? (Use the .05 significance level.) Use the five steps of hypothesis testing and explain your findings.
Develop a multiple regression model with categorical variables that incorporate seasonality for forecasting sales using the last three years of data in the Excel file New Car Sales.
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