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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?
Determine the probability of randomly selecting a person graduating with Master's degree who didn't major in Education.
At a large department store, the amount a shopper spent and the shopper's gender (male or female) were recorded. To determine if gender is useful in explaining the amount of money a shopper spends at the store we could
The alternative hypothesis is true. In this case the consumer advocacy group will have, A consumer advocacy group doubts this claim and tests the hypotheses
Ten students were sampled at random from a student population. Each was asked how many courses he or she was planning on studying in the upcoming year. The following is a list of the reported data values: 1, 2, 2, 3, 4, 5, 5, 5, 5, 6 What is the vari..
If 25 men aged 18-24 are arbitrarily chosen, determine probability that their mean serum cholesterol level is between 165 and 200.
A permutation resample for a two-sample test
Draw two pie charts, which allow the total yearly exports to be compared. Explain the trend in the export of fish as shown in the two pie charts.
Explain the terms parameter and statistics. Make sure the concepts of population and sample are included in the definitions.
For the 20 test scores shown, find the percentile rank for a score of 86.
Do 1-sample t-test to see if people in Chicago have travelled to fewer states than people nationwide. Utilize the 10% (.10) level of significance.
A game involving a pair of dice pays you 3 with probability 17/36, costs you 2 with probability 14/36, and costs you 4 with probability 5/36. What is your probability of losing money in one play of the game?
Which of the following is the correct set of probabilities for X and if a student is selected at random, the probability he or she is either a Junior or a Senior
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