Problem 1. Multiple Choice and Short Answers. 1. Which of the following are true

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Problem 1. Multiple Choice and Short Answers. 1. Which of the following are true? (5 pts) (a) Testing the effect of a drug on 100 people, and then testing the effect of a placebo on 100 different people is an example of dependent data (b) With large sample sizes even small differences between the null value and the point estimate, also called the effect size, can be statistically significant. (c) A cutoff of -005 is the ideal value for all hypothesis tests. (d) There are two types of hypothesis testing errors (Type I and Type II) and as the probability of one happening goes up, the probability of the other happening goes down. (e) If the p-value is greater than a, we can conclude that the null hypothesis is true. (f) The p-value in hypothesis testing tell you the probability that you will make a type I error (g) If the p-value is sufficiently large you can reject Ha (h) An example of type I error would be concluding that a drug increases strength, when in fact the drug does not. (i) Power of a test and the probability of making a Type 1 error are complements. (G) The hypotheses for testing if the average age at which gifted children fist count to 10 successfully is less than 32 months is: Ho : = 32; Ha :

Explanation / Answer

1) which of the following options are true ?

Answer - Option b , option c, option d , option f and option j

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