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A waiter believe the distribution of his tips has a model that is slightly skewed to the left, with a mean of $9.20 and a standard deciation of $5.20. He waits on 40 parties over a weekend of work.
What is the probability that he will earn at least $400? (round 4 decimal places)
How does the bell-shaped curve for the sampling distribution of sample means for samples of size n = 100 compare to the bell-shaped curve for sampling distribution of sample means for samples of size n = 60.
testing the significance of correlation.a manufacturer must decide whether to extend credit to a retailer who would
Suppose also that the mean score on test A is 85, and the standard deviation is 10; the mean score on test B is 90, and the standard deviation is 16; the scores on the two tests have a bivariate normal distribution; and the correlation of the two ..
a group of 14 friends got together for a wine contest. each guest brought his or her favorite bottle of pinot noir.
1. a study sponsored by american express co. and the french government tourist office found that old american
what is the chance the average contents of the cans will be less than advertised and what will be the standard deviation of the number of men who help at home, based on the first survey
Assume the population standard deviation (s) is 0.5 and the sample size (n) is 100. Calculate the values for alpha, a type I error and beta, a type II error. (To calculate Beta, consider a mean that is 1 standard error away from the lower end valu..
Pearson correlation coefficient was 0.61.a. Was the correlation coefficient significantlydifferent from zero? Use α = 0.05.b. Predict the torque for a current equal to 50 mA.
a bank with branches in a large metropolitan area is considering opening its offices on saturday but it is uncertain
Discuss the fields in which Poisson distribution is applied. Why does it matter whether a population of arrivals is limited or unlimited?
Based on these data, explain whether or not course attendance had any effect on determining of a restaurants violation of health code.
Explain the difference of your outlook on statistics after having studied it for whatever period of time you have done so as oppose to the time before taking up the study.
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