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I want to estimate within $10 the mean salary of all graduates who were business majors in college. How many business majors would be needed to estimate the mean salary to within 10 with 95% confidence if the population standard deviation is $200.
For some positive value of Z, the probability that a standard normal variable is between 0 and Z is 0.3770. Find value of Z? For some value of Z, the probability that a standard normal variable is below Z is 0.2090. Find value of Z?
If probability of drawing a face card is 0.625. Determine the probability of not drawing a face card.
Apply Scheduling Theory in order to optimize a schedule of events and reduce lost productivity
Evaluate z statistic for the Wilcoxon rank sum test, standard deviation for the Wilcoxon rank sum test and P-value for the Wilcoxon rank sum test
Process data by Excel using its two-way ANOVA without replication program.
A noted psychic was tested for ESP. The psychic was presented with 400 cards face down and asked to determine if each card was marked with one of four symbols: a star, cross, circle, or square. The psychic was correct in 120 cases. Let p represent..
A survey found that 85% of women in a given city enjoy shopping online. Suppose you randomly selected 6 women from the city and ask them whether or not they enjoy shopping online. Find the probability that exactly 4 say they enjoy shopping online.
Management plans to sample 150 packages per week. What is the appropriate control chart?
The standard deviation of the time to complete the entire homework assignment
Following data from an x bar chart, is the process capable (capability index>1.33)?
Explain the differences between longitudinal and cross sectional business research studies. Which two types of probability sampling are best suited for business research and statistical data analysis, and why?
The manager of Sandy Corporation wants to determine whether or not the type of work schedule for her employees has any effect on their productivity. She has selected 15 production employees at random and then randomly assigned 5 employees to each ..
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