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A random sample of 64 bearings produced by a machine has a mean diameter of 2.5 inches with a standard deviation of 0.1 inch. Construct a 90% confidence interval for the mean diameter of ball bearings.
suppose you have a list of salaries of all major league baseball players in 2013. does it make sense to find a 95
Assuming the sensitivity and specificity of the screening test are the same, which of the following statements about positive predictive value (PPV) applies.
Find out the probability that the return for common stocks will be more than 0%.
a store is running a promotion during which customers have two options for payment. option one is to pay 90 of the
in keno there are 80 balls numbered from 1 to 80 and 20 are chosen at random. if you play a double number you win if
frequency table speednumber of balls 0 - 29430 - 591660 - 896090 - 11920a professional tennis player hit 100 balls and
Find out whether this is enough evidence to accept or reject manager's null hypothesis, using alpha = .01. Is this test left-tailed, right-tailed or two-tailed?
1)Find the margin of error for the given values of C, S, and N. C=0.95, S=3.8, N=64. E=? round 3 decimal places
The following data show samples of three chain stores in three different locations in one town and the amount of dollars spent per customer per visit. At the 0.05 level, is there a difference in among the means?
A sample of 420 families revealed the following. At the 0.05 significance level, is there a difference in the proportion of customers that prefer each day of the week?
suppose that as a quality control consultant you know the population of machine operators for a corporation has a
What is a normal distribution? What is a Z-Value? Can you provide and example of how they relate?
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