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A new sales training program has been instituted at a rent-to-own company. Prior to the training, 10 employees were tested on their knowledge of products offered by the company. Once the training was completed, the employees were tested again in an effort to determine whether the training program was effective. Scores are known to be normally distributed. The sample scores on the tests are listed next. Use pre-test score as population 1 and post-test score as population 2, or [Picture] as the mean of the differences calculated as pre-test score minus post-test score.
Perform the four-step hypothesis test to determine if the training program increases scores?.
What is the conclusion for the test at [Picture]
If writing scores for population have standard deviation of s = 20, does sample give sufficient evidence to conclude that new composition course has significant effect? Suppose a two tailed test with a = 0.05.
A random sample of 85 group leaders, supervisors, and similar personnel at General Motors revealed that, on the average, they spent 6.5 years on the job before being promoted.
Give a real world example of a situation where normal parametric tests would not be useful and where there is a need for nonparametric test methods. Be specific and explain why nonparametric tests are needed in that case.
in how many ways can 3 named teams of 5 players each be chosen from a group of 15 people? how many unnamed
classify as categorical or quantitative data.your statistics teacher has gathered information on each of the students
A particular medical operation proves fatal in 1% of the cases. Find an approximation to the probability that there will be at least 2 fatalities in 200 operations.
describe how you will design a study that will optimize sensitivity specificity and predictive value and minimize type
Assume the population standard deviation of unoccupied seats for all flights for this airline is equal to 4.103. Find a 90% confidence interval for μ and the mean number of unoccupied seats
An experimental drug is administered to 30 randomly selected indivduals, with the number of individuals responding favorably recorded. Does this represent a binomial experiment.
let x be a random variable that represents the amount of a randomly selected monthly cell phone bill. we know that x
Nyobia had a population of 3 million in 1985. Assume that this country's population is growing continuously at a 5% annual rate and that Nyobia absorbs 40000 newcomers every year.
Management announce an incentive pay for the top 30% producers. what is the minimum number of units that a worker should produce in order to qualify for the incentive pay?
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