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1.In his management information systems textbook, Professor David Kroenke raises an interesting point:“If 98% of our market has Internet access, do we have a responsibility to provide non-Internet materials to that other 2%?Suppose that 98% of the customers in your market do have Internet access, and you select a random sample of 500 customers.What is the probability that the sample has
a.Greater than 99% of the customers with internet access?
b.Between 97% and 99% of the customers with Internet access?
c.Fewer than 97% of the customers with Internet access?
Find the probability that one or more of the five parolees will be repeat offenders. (Round your answer to three decimal places.)
At a .01 level of significance, test whether there is a difference between the 2 sample means. Construct a 99 percent confidence interval estimate of the difference between the two sample means.
Find the minimum sample size needed, using a prior study that found that 35% of the respondents said they used an online service or the Internet to make travel reservations.
A simple random sample of 50 speeds (in mph) is obtained from cars traveling on a section of I-10 through Tallahassee. The sample has a mean of 72.3 mph and a standard deviation of 7.4 mph. Use a 0.05 significance level to test the claim that the ..
A leasing firm claims that the mean number of miles driven annually,M , in its leased cars is less than 13020 miles. A random sample of 90 cars leased from this firm had a mean of 12750 annual miles driven.
Use formula z=(mean of values in sample - mu subscript mean of values in sample) divided by (lower case sigma divided by sqrt number of values in sample)
Twenty students randomly assigned to an experimental group receive an instructional program; 30 in a second group do not. After 6 months, both groups are tested on their knowledge
The undergraduate grade point average (GPA) for students admitted to the top graduate business schools was 3.37 (Best Graduate Schools, U.S. News and World Report, 2001).
Formulate a linear programming model that can be used to determine the number of units each model that should be produced in order to maximize the total contribution to profit
List the steps involved in hypothesis testing using: a) the traditional/classical method; b) the probability-value method. Provide an example of each.
Determine the test value? Use α = 0.05. (Use the variances unequal formula).
Suggest reasonable values for n and p (binomial) or mu (poisson) for your example. Calculate the mean and standard deviation of the distribution for your example.
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