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What is the weighted mean profit per delivery - a bottling company offers three kinds of delivery service - instant, same day and within 5 days. The profit per delivery varies according to the kind of delivery. The profit for an instant delivery is less than the other kinds because the driver has to go out directly to a grocery store with a small load and return to the plant.
How do you find out what effect each type of delivery has on the profit picture, the company has made the following tabulation based on deliveries from the previous quarter
Instant 100 deliveries during qtr. $70 profit
Same Day 60 deliveries during qtr. $100 profit
Within 5 days 40 $160 profit
A processor of carrots cuts green top off each carrot, washes the carrots, and inserts six to a package. Twenty packages are inserted in a box for shipment. To test weight of the boxes, a few were checked.
Martin Motors has in stock three cars of the same make and model. The president would like to evaluate the gas consumption of the three cars (labeled car A, car B, and car C) using four different types of gasoline. For each trial, a gallon of gaso..
Create the indicated confidence interval for population mean µ using a t- distribution.
What proportion of time will it take clean-up crew 56 or more hours for cleaning plant? Define the lower and upper limits of interval.
Find the most powerful predictor among the six independent variables using regression.
Explain these results to a person who understands the t test for a single sample but knows nothing about the t test for independent means.
In looking at your business, when and why would you want to use a one-sample mean test (either z or t) or a two-sample t-test? Create a null and alternate hypothesis for one of these issues. How would you use the results?
What is the approximate estimated bootstrap standard error of the median, What is the approximate bias of the median estimated from bootstrapping - What is the bootstrap t confidence interval for the median
We wish to create this mean value interval for selling price with 95% confidence level. Find out the best point estimate (average) for selling price. Critical t-value(s) associated with 95% confidence level.
By using.02 level of significance, carry out a 5-step hypothesis testing procedure to find out if new processes considerably reduced the wait time.
Suppose you bid $12000. What is the probability that your bid will be accepted?
Show the graph of the probability density function for flight time.
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