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Researcher wants to determine whether high school students who attend an SAT preparation course score significantly different on the SAT than students who do not attend the preparation course. For those who do not attend the course, the population mean is 1050 (μ = 1050). The 16 students who attend the preparation course average 1150 on the SAT, with a sample standard deviation of 300. On the basis of these data, can the researcher conclude that the preparation course has a significant difference on SAT scores? Set alpha equal to .05.
Write the null hypothesis
part 1- calculus has many uses in real life. discovered simultaneously by sir isaac newton and gottfried wilhelm
Find out about your company's forecasting system
What can we say about the shape of the distribution of the sample mean?
Frequency distribution from part a: Find the mean, variance and stand excldeviation and using the frequency distribution from parta: What is the probability of a randomly selected herb to have a height of at least 17 inches?
1. unemploymenta. suppose that 98 million people work and 5 million seek work. what is the unemployment rate?b. now
Determine the correlation coefficient. Find the predicted value of Y given X = 75. Give an interpretation of the predicted value in the context of the problem.
The company SlimDown makes weight loss products.
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analyze the processed data in statistical survey. below are the results of the processed data.question 1 yes p 0.1986
4. A simple random sample of 300 items is selected from a large shipment, and testing reveals that 4% of the sampled items are defective. The supplier claims that no more than 2% of the items in the shipment are defective. Carry out an approp..
Compute the mean and SD of the probability of the mean and determine the test statistic
A weight-loss clinic advertised that last month its patients, on average, lost 6 LBS . Assuming that average refers to the mean, which of the following claims must be true based on this information
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