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A simple random sample of 500 students was selected. Survey form was sent to each of the 500 students by e-mail. Find population of interest to faculty senate.
A study of over 1200 people over age 65 showed that "owls" - those who tend to go to sleep after 11 p.m. and rise after 8 a.m. Is this observational study or randomized experiment?
Is this observational study or randomized experiment? If this is experiment, Write the three criteria in this case?
Owner of Britten's Egg Farm wishes to find mean number of eggs laid per chicken. Determine the best estimate of this value?
A pizza place offers following toppings: sausage, pepperoni, ham, onions, mushrooms,olives, and peppers. How many different pizzas are possible if it has one meat and one vegetable topping?
The daily demand of four warehouses is 500, 400, 600, and 500 tons for warehouses W, X, Y, and Z, respectively. Set up initial solution matrix for transportation problem.
Write the name of six different factors which might be significant to company deciding on location for new facility. For each of factors, describe why it would be significant in location decision.
A company is concerned about diameter of one of its steel pipes. If average range for samples was 2 inches, find the upper and lower control limits for the X-bar chart?
It is estimated that first safe will need 70 hours of shop time and 75% learning curve is expected. How many hours will whole order need? Describe producer and consumer risk in acceptance plan.
The item costs $60 a unit, and order costs $75, how many must be ordered at time if they are using EOQ ordering rules? Find the total annual inventory cost?
After asking 1450 students, they determined that 42% of students did not like starburst. How many students selected starbursts as their favorite candy?
There are 450 hours of labor available for production. How many of each kind of cake must be made to maximize revenue?
Use regression model to forecast shipments for the year 1999. Compare two forecasts. Which forecast would you prefer to use and why?
Which method result is more appropriate for forecasting factory orders? Compare two methods based on Mean Absolute Deviation (MAD)?
Based on sample of 20 students selected from population, create the suitable hypothesis test at level of significance 0.05 standard deviation is 9.
Determine sample size are large enough. Perform the suitable hypothesis test. report with p-value, would null hypothesis be rejected?
Based on sample information, find out 90% confidence interval estimate for difference between two population mean.
Overweight people frequently become desperate as they different diets without success. At α=0.02 to test efficiency of diet program. Suppose normal distribution for paired difference.
Find out the sample size are large enough. Perform the suitable hypothesis test. Report with p-value, would null hypothesis be rejected?
What time must Freddy leave home for class so that he gets bonus point 99% of time. If he leaves at 5:40 pm. what percentage of time would he get bonus point.
Find probability that mean distance from college to students home for random sample of 50 college students is more than 18 miles.
Find the probability that based on sample of 100 CDs the process will be stopped to readjust machine, if true percentage is 6%? find the mean and standard deviation.
Find out the mean and standard deviation of sampling distribution and explain its shape. Compute probability that mean of such a sample would be greater than $60,000.
If the company wishes to ensure than 99% of packages contain at least 10-oz of cheese, to what value must mean of machine be set?
Find out sample size are large enough. Perform the suitable hypothesis test. Report with p-value, would null hypothesis be rejected? Calculated pooled estimated for overall.