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"Supposed that an internal report submitted to the managers at a bank in Boston showed that with 95 percent confidence, the proportion of the bank's customers who also have accounts at one or more other banks is between .45 and .51. Given this information, what sample size was used to arrive at this estimate?"
We're solving for 'n' . I have a CI of 95% which is z=1.96. I'm thinking the pbar is 0.48 (the average between 0.45 and 0.51) but I'm still unsure how to solve for 'n'.
Moreover, you are given that e-Nδ = 0.36. If Z is the present value of the benefits, calculate FZ (z) for all nonnegative values of z.
Formulate a hypothesis that can be used to determine whether the mean annual consumption in webster city is higher than the national mean.
Also, what information do you need to get from the problem to put into Minitab to run a binomial calculation?
Calculate descriptive statistics. Using the "split file function" compare groups by condition and gender. Run an analysis of the data sets descriptive statistics
Suppose the winnings of gamblers at Las Vegas are normally distributed with mean µ = -300 (the typical person loses $300), and standard deviation σ = 100. Determine the probability that a gambler does not lose any money.
(a) Formulate the null and alternative hypothesis for this test scenario. (b) Which test statistic (z or t) is appropriate for this test? Why? (c) Test the validity of the supermarket's belief by conducting a hypothesis test for a single mean. Use ..
a sample of 40 quarters was taken and it was found that the average weight was 5.522 g with a standard deviation of
Consider the following scenarios, commenting on the validity of the reasoning that is being used. After an unusually dry autumn, a radio announcer is heard to say, "Watch out! We'll pay for these sunny days later on this winter." A batter who had ..
Conduct a hypothesis test and What is the calculated t value? Are the mean test scores of these two groups significantly different at the .05 level - Conduct a hypothesis test.
If you did conclude that there was a difference in the average revenue, use Fisher's LSD approach to determine which restaurant has the lowest mean sales.
Let denote the sample mean viewing time. What is the probability the sample mean will be within 0.25 hours of the population mean?
what are some other difference between test for independent groups and t test for matched groups? do they both use the
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