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Virtual call centers are staffed by individuals working out of their homes. Most home agents earn $10 to $15 per hour without benefits versus $7 to $9 per hour with benefits at a traditional call center (BusinessWeek,January 23, 2006). Regional Airways is considering employing home agents, but only if a level of customer satisfaction greater than 80%can be maintained. A test was conducted with home service agents. In a sample of 300 customers, 252 reported that they were satisfied with service.
a) What is your point estimate of the percentage of satisfied customers?
b) What is the p-value provided by the sample data? (This is the part I don't understand, there is no standard deviation given, so I don't know how to complete either formula (t or z score))
In a raffle, 1,000 tickets are sold for $2 each. One ticket will be randomly selected and the winner will receive a laptop computer valued at $1200. What is the expected value if a person buys one ticket?
Recognize and explain potential threats (up to 3) to external validity.
Determine what analysis would you do on each problem (ie, one-sample z-test, one-sample t-test, proportion test, two-sample independent t-test, or paired test)?
a nonprofit company concerned with the school dropout rate in a nearby state has designed a tutoring program aimed at
a student club has 40 members including stacy and tom.a in how many ways can the club elect different individuals to
When 40 people used the Weight Watchers diet for one year, their weight losses had a standard deviation of 4.9 lb (based on data from "Comparision of the Atkins, Ornish, Weight Watchers, abd Zone Diets for Weight Loss and Heart Disease Reduction, ..
One of the 4 bus drivers is also randomly selected. Let Y denote the number of students on his bus. Compute the expectations and variances of X and Y?
Using a previous exercise about Hallux abducto valgus (HAV) (deformation of the big toe that often requires surgery). Doctors used x-rays to measure the angle (in degrees) of deformity in 38 consecutive patients under the age 21 who came to a medi..
1 an 8-card hand is dealt from a standard deck of 52 playing cards. what is the probability thata you are dealt at most
assume a normal distribution with a mean of 70 and a standard deviation of 12. what limits would include the middle 65
The producers of a new toothpaste claim that it prevents more cavities than other brands of toothpaste. A random sample of 60 people used the new toothpaste for 6 months. The mean number of cavities at their next checkup is 1.5. In general ..
using the data provided x the quality of the speed of execution and y overall satisfaction with the electronic trades
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