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Q1) Each month National Association of Purchasing Managers publishes NAPM index. One of the questions asked on survey to purchasing agents is: Do you think economy is expanding? Last month, of 300 responses, 160 answered yes to question. This month, 170 of the 290 responses indicated they felt economy was expanding. At.05 significance level, can we conclude that larger proportion of the agents think the economy is expanding this month?
Concept of statistical signi cance
Compute and interpret each of the statistics in parts(a) through (f) Mean and Median.
Determine relative frequency of X=4? Generate the cumulative frequencies.
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Standard deviations for first- and second-time and confidence interval
what percent of the total number of seeds germinated?
What is the probability she received 5 or more email during the same period?
A teacher gave a 25 question multiple choice test. After scoring the tests, she computed a mean and standard deviation of the scores. The standard deviation was 0. Based on this information
Test hypothesis that both propellants have same mean burning rate. Utilize α=0.05. Compute the P value.
Table shows the smoking habits of group college students. If student is selected at random, determine the probability of getting someone who is man or a woman.
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Using the following data on 15 workers, construct an exact 95% confidence interval for µ.
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