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Bank tellers report that when deciding on where to work, career growth, salary and compensation, location and commute, and company culture and values are important factors to them. According to a blog "25 Highest Paying Companies" the mean monthly pay of bank tellers is $4648. Suppose that the monthly pay is normally distributed with a standard deviation of $400. What is the probability that the monthly pay of a bank teller is a. less than $4000 b. between $4200 and $4800 c. above $5100 d. Ninety nine percent of the monthly pays are higher than what value?
But the answer you provided for (d) was for 90 percent of the monthly pays, not 99 percent. I'm trying to figure out the 99 percent answer, but I'm having a problem.
Assert with probability of at least 0.95 that the error of her estimate will not exceed 0.07. How large a sample, n, will she require if she has no idea what the true proportion is.
A stationery store to estimate the mean retail value of greeting cards purchased by its customers when they visit the store. A random sample of 15 customers indicates a mean amount of $2.55 with a standard deviation of $0.44 per customer per visi..
A sample of 50 ads reveals a sample average of 5.1 weeks with a sample standard deviation of 2.3 weeks. State the null and alternative hypotheses and carry out the test at the 5% level of significance.
if r -0.665 and n 6 test the significance of the correlation coefficient at a .05 reject p 0 because 2.68gt 2.57do not
Find the mean time to failure.- Find the standard deviation of the time to failure.- What is the probability of the component lasting at least 1500 hours?
The mean number of words per minute read by sixth graders is 89 with a standard deviation of 16. If 66 sixth graders are randomly selected, what is the probability that the sample mean would be greater than 92.25?
in 2009 the number of feral quaker parrots living in austin was 250. in 1992 there were only 15 feral quaker parrots.
Find out the slope, b, and the intercept, a, for the least-squares line. Write the equation of the least squares line.
The reason sample variance has a divisor of n-1 rather than n is that it makes the sample standard deviation an unbiased estimate of the population standard deviation.
One owner has offered to let you use his vineyard this year for an experiment. Propose a design. Carefully indicate how you would set up the experiment, specifying the factor(s) and response variable.
As you know, everything we do in business is a process, and every process can be broken down into its component parts, analyzed, and improved upon. Now, this doesn't mean that every aspect of every process "should" be improved upon.
What type of experimental design was used?- Explain why the traditional analysis of variance formulas are inappropriate for the analysis of these data.
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