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1. Let sample mean = 70 and the sample variance = 36 and assume the data is normally distributed. Use ths information to answer the following:
a. what is the median of this data set?
b. find an interval that would contain 68% of all data values from the sample.
c. find the x-value that corresponds to the 16th percentile
d. what is the z-score associated with x=80
2. In a certain city, the fire department typically responds to eight emergencies per month. Last month the department responded to two emergencies. Some of the employees at the fire station believe that because of last month's numbers, they are more likely to see above average emergency call rates this month. How would you respond to their position?
the random variable x has mean 9 and standard deviation 8. what is the mean and the variance of 2xrespectively?explain
What's the expected value of sample information? How much might the physicians be willing to pay for a market study?
the most popular color for cars is white 30 black 17 red 14 silver 12 gray 11 blue 11 and other 8. a survey of 180
A random sample of 24 patients found a standard deviation of 520. Assume the variable is normally distributed and = 0.01. What are the critical values?
Once you are done with this problem go to a web and do a quick research of how probabilities are used in different disciplines and share an article that shows this. Summarize your article and provide your references
The standard IQ test has a mean of 100 and a standard deviation of 13. We want to be 98% certain that we are within 2 IQ points of the true mean. Determine the required sample size.
Construct a 95% confidence interval estimate for the population proportion of administrative professionals who prefer cash bonuses.
a 90 confidence interval for a proportion is 0.265 0.385. what is the probability that the population proportion is
By definition, these are not consistent - e.g. the effect of temperature is different at the two photo-periods. What to do if an interaction is present?
Based on the sample findings, estimate the true mean of Saturday sales with 90% probability.
study the following minitab output from a regression analysis to predict y from x.a. what is the equation of the
Quaker Oats is contemplating changing the shape of its box from the quaint cylinder presently in use. Different random samples were selected from five stores of similar size in the same region
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