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The mean of a probability distribution is 50 and the standard deviation is 5.
The farmers of our state have asked that we introduce legislation to provide subsidies for soybeans. Unfortunately, we will have to turn down their request.
Draw a bell curve for each one of the following normal probability distributions: the standard, the sat and Binet Intelligence scale. Draw a separate bell curve for each one.
Carry out a two-sample t test. State hypotheses and give the two sample means, the t statistic and its P-value, and your conclusion.
What does this suggest about the distribution of wait times for these two procedures?
Large non-normal population with a mean of 10 and variance of 16, what would be the mean, variance, standard deviation and shape of the distribution of sample means? Give reasons for your answers.
Could rejecting the null hypothesis actually be a positive thing in an experiment or test? Please provide and example with your thoughts. Could you think of a situation where rejecting the null hypothesis does not mean the alternative hypothesis is ..
question 1 a company sells packets of biscuits that they claim on average contains at least 20 g biscuits in each
What are the assumptions necessary to use the z-series test? What are the assumptions necessary of use the t-series test?
The board of health of a particular state was called to investigate claims that raw pollutants were being released into the river flowing past a small residential community.
A sample of participants took part in a hearing experiment. Among other things, the absolute hearing threshold (in decibels) wasmeasured for each participant. The measurements were as follows:
We wish to detect a mean difference of 0.25 for a variable that has a standard deviation of 0.67.
What score was earned by more students than any other score? Why? What was the highest score earned on the exam?
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