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The loaves of rye bread distributed to local stores by a certain bakery have an average length of 30 centimeters and a standard deviation of 2 centimeters. Assuming that the lengths are normally distributed, what percentage of the loaves are
a) Longer than 31.7 centimeters?
b) Between 29.3 and 33.5 centimeters in length?
c) Shorter than 25.5 centimeters?
Your fixed costs are presently $500,000 with a variable cost per unit of $25 per unit and a sales price of $43 Your options are: Increase your fixed costs by $50,000 which will decrease variable costs by $8 per unit.
Choose a number at random from the set of numbers from the set of numbers {1,2,3,4,5}. Now choose a number from the subset {1,...,X). Call this second number Y.
In a sample survey, 200 of 800 individuals enrolled in our managed-care organization indicated that they favored a proposal to extend office hours from 5:00 to 8:00 p.m. Construct a 95% confidence interval for the corresponding true proportion.
What is the probability a random sample of 75 students will provide a sample mean SAT score within 20 of the population mean?
What is the decision regarding H0? " "Imagine you are conducting a left tailed test of proportions; level of significance is 0.05; calculated z-value is -2.00;
If you were to accept the null hypothesis, even though the null hypothesis was false, what type of error would you have commited?
Compute β-error of test in part (a) if true difference in mean burning rate is 2.5 centimeters per second.
Develop an estimated regression equation relating the top speed with the boat's beam and horsepower rating and compute and interpret and R2 and R2a
real estate agents always say location location location is the most important thing in buying a house. we want to know
Find out z values for 29 and 34 hours. What percent of garages take between 32 hours and 34 hours to erect?
The Web-based company Henrietta Balloons has a goal of processing 96% of its orders on the same day they are received. If 95 out of the next 100 orders were processed on the same day, would this prove that they are exceeding their goal, using a 90%..
Test the claim that the mean age of the prison population in one city is less than 26 years. Sample data are summarized as n = 25, x = 24.4 years, and s = 9.2 years. Use a significance level of α = 0.05.
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