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The average balance for customer accounts in The Reserve Fund at the time it was frozen by the Securities Exchange Commission (SEC) was $22,500, with a standard deviation of $7,500. The SEC overseers want to draw a sample of 100 accounts to help assess the impact of the fund's freeze on the account holders. Precisely (that is, using specific numbers) what does the central limit theorem tell us about the sampling distribution of sample means for samples of this size from this population?
To determine if this is evidence that students perform worse under uncomfortable conditions, The P-value of a test
Utilize this information to construct a probability table, and then calculate each of the given probabilities:P (female and domestic car).
A box in a certain supply room contains four 40 w light bulbs, five 60-W bulbs, and six 75-W bulbs. If two are randomly selected from the box and at least one of them is found to be rated 75-W.what is the probability that both of them are 40- W bu..
Need to come up with a regression model to forecast monthly sales of cold beverages for the next year. What variables might be included in the model?
Assume that the underlying population variances are equal. a. Are the two samples paired or independent?
Is there evidence to suggest a difference in the mean waiting times at the four body shops? Use the .05 significance level.
Describe why the normal distribution can be used as an approximation to binomial distribution. What conditions should be met to use the normal distribution to approximate the binomial distribution? Why is a correction for continuity essential.
Testing for population proportion - evidence that the proportion of data processing clerks who have gone through the new training and are no longer employed is less than .25?
In a marketing study, 100 consumers were asked to select the best digital music player from the iPod, the iRiver, and the Magic Star MP3. To summarize the consumer responses with a frequency table, how many classes would the frequency table have?
Twelve doctor's offices were given 3 lab inspections with the following results:
The hypothesis is to be tested at the 5% level of significance. The critical value from the table equals:
Describe the given data show a seasonal effect using moving average method. Describe the data which show a seasonal effect.
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