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Florida Department of Labor and Employment Security reported state mean annual wage was $26,133 (Naples Daily News, Feb. 13, 1999). Hypothesis test of wages by county can be performed to see whether mean annual wage for particular county diers from state mean. Sample of 550 individuals from Collier County illsutrated sample mean annual wage of $25,457. Suppose that = $7600, is there adequate evidence to conclude that mean annual wage of people from this county is signicantly dierent than state mean?
People in a large population average 60 inches tall. You take a random sample and will be given a dollar for each person in your sample who is over 65 inches tall.
Morality Study for a group of four men, the probability distribution for the number x who live through the next year is as given in the accompanying table.
Seiko purchases watch stems for their watches in lots of 10,000. Seiko's sampling plan calls for checking 20 stems, and if 3 or fewer stems are defective, the lot is accepted.
The bank wants to find out the waiting time of their customers during the Friday evening hours from 5pm to 8pm. Using the data in ungrouped form, compute the Standard Deviation, using the computational formula.
A university wants to determine the proportion of students who use a cash card to pay at the university food service. Out of 100 students surveyed, 65 students use a cash card. Estimate the value of the population proportion.
Given the large difference between the two measures of central tendency, which of the two would you rely on in describing the average claim cost and why?
The concessions manager at the Clemson vs. USC football game must decide whether to have the vendors sell sun visors or umbrellas. There is a 30% chance of rain
Determine margin of error for confidence interval in (a)?
Determine the probability that their SAT scores will differ by more than 50 points?
Three unrelated people go for dinner to a Chinese restaurant which uses MSG in its food. Each person has a 10% probability of developing an adverse reaction to the MSG.
When we move from the basic normal distribution to the sampling distribution of the mean we substitute the standard error of the mean for the standard deviation when we make the conversion to the standardized normal distribution.
In the Distance problems, the kids are given a Rate (speed) that a vehicle is going, as well as a Time that the vehicle travels, and asked to calculate the Distance travelled. In the Rate problems they are asked to compute Rate from the other two ..
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