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IQ scores have a mean of 134. A sample of 13 people had a mean IQ of 129 with a SD of 9. Find the value of the test statistic. Round to three decimals.
the U.S. economic system will be able to rebound following the recession of 2009-2010. Create a scale of each of the following types:Constant-sum scale and Likert-type summated scale.
Explain which data techniques you are most familiar with/have used: in a previously done project that involved the collection and analysis of data and explain why the examination of collected data is so important.
write a 1050- to 1750-word paper describing a hypothesis test to perform on that data using a one or two-sample z test
What is the probability that the sample proportion is less than 0.5? What is the upper limit of the sample proportion such that only 3%of the time the sample proportion would exceed this value
a scientist is proposing a study on the level of violence in teenagers. he feels that the boys are more violent than
an american roulette wheel has 38 slots 18 are red 18 are black and 2 are green. let r be the number of spins until you
You have been given a report that presents two regression models with different numbers of independent variables. You do not have the data so you cannot re computed regression models. Nevertheless, you have been asked to find out which model is b..
Based on an SRS of 50 pineapples with a mean weight of 31.6 ounces, did the new irrigation system cause an increase in the mean weights of pineapples produced? Explain your answer completely.
Identify the variable being measured and describe the sample as it relates to the population.
Suppose a random sample of size 21 is taken, and the variance of the sample is calculated to be 5.??a. What is (approximately) the probability that the population variance σ² is less than 4?
How large random sample of potential voters will be required to evaluate result with 95% confidence and with margin of error of plus and minus 3%?
This morning the office you are monitoring has eight office visits on the schedule. What is the probability that
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