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A job placement director claims that the average starting salary for nurses is 24,000.A sample of 10 nurses' salaries has a mean of 23, 450 and a standard deviation of 400. Is there enough evidence to reject the director's claim at 0.05 level of significance?
The Appliance Center has six sales representatives at their North Jacksonville outlet. Listed below is the number of refrigerators sold by each last month.
The number of standard errors that the sample estimate (p 1 - p 2 ) of (p1 - p2) falls from its null hypothesis value of zero is called
As number sampled is large and those advocating a strike constitute over 50%, can we suppose that majority of all steelworkers favour a strike?
Assume you choose 20 houses at random. On average, how many houses of twenty would you expect to have DVD? Determine standard deviation of number of houses with DVD?
What advantage does correlation have over a cross-tab?
Scores on the Math Achievement Test form a normal distribution with a mean of u = 300 and a standard deviation of a = 100. What score separates the top 10% of the distribution from the rest.
Carry out the global test of hypothesis to find out whether any of the regression coefficients are not equal to 0. Use.05 level of significance.
Describe your answer to a person who has never had a course in statistics.
Find the probability of winning jackpot?
The mean top of knee height of a sitting mate is 20.7 in.
If a garage is robbed, what is the probability the doors were left open?
A. what is the probability a randomly chosen business customer flying is on a jumbo jet? B. what is the probability a randomly chosen non-business customer is on an ordinary jet?
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