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In: Statistics and Probability

d) A researcher wants to see if she can confidently claim that over 20% of students...

d) A researcher wants to see if she can confidently claim that over 20% of students plan to transfer to Sac State. She will randomly sample 600 students. She decides to reject Ho if p>0.2335 where Ha: p>0.20.

A) for the test she set up, find the probability of making a type II error if the true population proportion is 17%.What is the significance level she used to set up the test?

B)For the test she set up, find the probability of making an error(of the appropriate type) if the true population proportion is 18%.

C) For the test she set up, find the probability of making a correct interference if the true population is 21%.


e) The researcher found that 22.5% of the sample plan to transfer to Sac State. What can she conclude at the significance level you found in part (d)?

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