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The corporate headquarters of Bank.com, a new Internet company that performs all bank- ing transactions via the Internet, is located in downtown Philadelphia. The director of human resources is making a study of the time it takes employees to get to work. The city is planning to offer incentives to each downtown employer if they will encourage their employees to use public transportation. Below is a listing of the time to get to work this morning according to whether the employee used public transportation or drove a car.
a. Find the median and the first and third quartiles for the time it took employees using public transportation. Develop a box plot for the information.
b. Find the median and the first and third quartiles for the time it took employees who drove their own vehicle. Develop a box plot for the information.
c. Compare the times of the two groups.
Group suspects that local shopkeeper's 10g packs is actually less than wt. The group took sample of 40 whose mean wt is 9.95 and s.d. of 0.15. Find p-value for the test of hypothesis.
36 values given here are based on summary statistics from research by cumming. Do you think that these data are normally distributed?
Determine the probability that we would reject null hypothesis given that it is true?
Compare and contrast internal and external validity
If 9 measurements are randomly selected from this population, what is the probability that the sample mean will exceed 104?
a human resource manager at a large company wants to estimate the proportion of employees that would be interested in
The distance travelled (in km) by a courier service motorcycle on 40 trips were recorded by the driver. Define the random variable and the data type.
The personnel manager at a company wants to investigate job satisfaction among the female employees. One evening after a meeting, she talks to all 30 female employees who attended the meeting.
Suppose Z has a standard normal distribution with a mean of 0 and a standard deviation of 1.0. One-half (50%) of the possible Z values are between ________ and ___________ symmetrically distributed about the mean.
These problems related to Basic Statistics and discuss about type I and type II errors and their critical role in statistical tests
a social psychologist was interested in examining the effect of being observed on sports performance and if competition
A standard deviation of 25 days. If 100 women are randomly selected, find the probability that they have a mean pregnancy between 266 days and 268days.
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