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On opening day one season, 10 major league baseball games were played and they lasted the following numbers of minutes.
SouthCo is manufacturing a product that it will sell for $120. What is the monthly net income of SouthCo if unit sales are 22% above the break-even point?
the iq test score are normally distributed with a mean of 100 and a standard deviation of 15. what is the probability that a person would score 130 or more on the test?
At a certain university, the average cost of books was $390 per student last semester and the population standard deviation was $75. This semester a sample of 55 students revealed an average cost of
Determine the percentage of samples size 16 that have a mean score within 6 points of the population mean score of 220.
suppose a bookie will give you $6 for every $1 you risk if you pick the winner in 3 ballgames. For every $1 bet, you either lose $1 or gain $6. What is the bookies expected earnings per dollar wager
You are awaiting your tax return and the time at which the mailman delivers the mail to your home follows a normal distribution with a mean time of 2:00pm and a standard deviation of 15 minutes. Wha
Test a hypothesis to see if this proportion has changed since 1985. I have the standard error and a t-score of 1.660. I need the test effect, test statistic and p-values.
The checking accounts of the Quick Money Bank are categorized by the age of the account and the balance in the account. From this group of 2000 accounts what is the probability that an account has a
At the .025 significance level, can we conclude that less than 88 percent of the orders are delivered in less than 10 minutes? What is the decision rule?
The Fido Dog Food Company wishes to introduce a new brand of dog biscuits (composed of chicken and liver-flavored biscuits) that meets certain nutritional requirements. Find the optimal solution for
the average earnings of year-round full time workers 25-34 years old with bachelor's degree or higher were $58,500 in 2003. if the standard deviation is $11,200, what can you say about the percentag
What is the opportunity loss of spending 4 hours per week on average studying for the exam when the exam turns out to be easy?
The uniform distribution over the interval 7.5 to 10.5 gallons per minute. Find the probability that between 8.0 gallons and 9.0 gallons are pumped during a randomly selected minute.
What will be your critical value? What is the value of the test statistic? the boast of dealership A is correct?
The manager of this company wants to determine the quantity to produce for each item such that they will maximize the companies profits. What is the desired output for item 1?
Assume that the total Sum of Squares for the response is SS(Total) = 400. If the Sum of Squares for Treatments (SST) is 10% of SS(Total), and the Sum of Squares for Blocks (SSB) is 20% of SS (Total)
In a particular February, the mean cost for an airline round-trip with a discount fare was $258. A random sample of 15 round-trip discount fares during the month of March provided the following data
The Rocky Mountain district sales manager of Rath Publishing Inc., a college textbook publishing company. The value of the test statistic is ______.
Based on these results a confidence interval extending from 5.96 to 6.16 was calculated for the population mean. Find the confidence level of this interval.
With a standard deviation of 581 grams, (454 grams = 1 pound).Looking at a baby that weighed 16.1 lbs at birth: What would his Z-score be when compared to all babies?
Is this study good evidence that requiring job training of all welfare mothers would greatly reduce the percent who remain on welfare for several years?
The probability that Pete will catch fish on a particular day when he goes fishing is 0.8. Pete is going fishing 3 days next week. what the probability that Pete will catch fish on exactly one day i
Assume that ages at onset of this disease are normally distributed for each gender, do not assume the population variances are equal. What are the appropriate null and alternative hypotheses?
Of these 18 trucks, 6 have brake problems. A sample of 4 trucks is randomly selected. What is the probability that 2 of those tested have defective brakes