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A gummball machine has just been filled with 50 black, 150 white, 100 red and 100 yellow gum balls that have been thoroughly mixed. Sue and Jim approached the machine first. They both said they wanted red gum balls. What is the likelihood they will get their wish?
A) 0.50
B) 0.062
C) 0.33
D) 0.75
A machine is designed to produce ball bearings having a mean diameter of 0.574 centimeter with a standard deviation of 0.008 centimeter. To determine whether the machine is in proper working order, a sample of six ball bearings is taken every..
Assuming the requirements of ANOVA are satisfied, at the .05 level of significance, is there evidence of a significant difference among the mean wait times at the five checkpoints?
If 30 samples of 100 items are tested for nonconformity, and 95 of the 3,000 items are defective, find the upper and lower control limits for a p -chart.
A parent is deciding which babysitter to use in the neighborhood. Babysitter A charges $20 per hour and a base rate of $60 per day. Babysitter B charges a base rate of $50 per day and $25 per hour.
A commuter travels many miles to work each morning. She has timed this trip 5 times throughout the last month. The time (in minutes) required to make this trip was 44, 39, 41, 35, and 41.
Shoppers enter Hamilton Place Mall at an average of 120 per hour, and the number and shoppers is Poisson distributed. What is the probability that at least 5 shoppers will enter the mall between 5:00 and 5:05 p.m.?
Conduct post hoc comparisons with the LSD method. Which groups differ significantly at α = 0.05?
A local consultant randomly selects a sample of 36 meals whose mean price is determined to be $8.75. Assuming that σ = $0.75, calculate a 95% confidence interval for the population mean price.
Value of s^2 (s(squared)), is less than or equal to 0.01 even though s = 0.0075. What is to be done with a shipment of this glass for which the sample variance of the indices of refraction equaled 0.000182?
No information is available about its value. How large a sample size is needed to estimate it to within 0.15 with 99% confidence?
A tailor makes wool tweed sport coats and wool slacks. He is able to get a shipment of 150 square yard of wool cloth from Scotland each month to make coats and slacks
Suppose the average value of P is $ 3 and average value of Po is $ 6. Determine the price elasticity at average values of P and Po?
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