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Your company has experienced problems with employee morale and productivity. The consultant that was hired submits a report that includes opinions and data collected from 300 secretaries and clerks as well as 75 senior managers. You are in charge of putting the provided recommendations in perspective and comment on the quality of the report.
1. What will you look for?
2. What factors might be important considering the research topic and the choice of the sample?
Find out the probbility that exactly five arrive within two days?
The average price of a home is reported to be $203,190. Use this price as the population mean, and assume the population standard deviation is 43,890.
Confirm whether given random variable is binomial distribution or not. If this experiment is finished with replacement, explain why.
Determine a 99% confidence interval for mean pH in rainfall. How would you distinguish interval?
Assuming the nurses surveyed were a simple random sample from the population of all nurses in the United States, find the appropriate null hypothesis for these data
What can we conclude from these figures at a level of significance of .01?
It is estimated that .44 percent of the callers to the customer service department of Dell Inc. Will receive a busy signal. What is the probability that of today's 1200 callers at least 5 will receive a busy signal? Use the poisson approximation t..
Find the 90%, 95% and 99% confidence intervals for the proportion of all voters who favor the issue. How many more voters should we include in the sample if we need to reduce the margin of error by half?
Convert each of the following z intervals to raw score x intervals:
At the 0.05 level of significance, is there evidence to suggest that the population mean waiting time to check out is less than 10.73 minutes?
Develop a probability distribution for the number of students in the sample who watch soap operas.
Z score on comparison distribution for sample score and your conclusion. Suppose that all population are normally distributed.
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