On an exam with H 70, you have a score of x 76. In this situation you should exp

Question

On an exam with H 70, you have a score of x 76. In this situation you should expect a better grade if a: 3 than if a 12. True alse On an exam, Tom scored 8 points above the mean and had a zscore of +2.00. The standard deviation for the set of exam scores must be a 4. abse A population with u 100 and a 20 istr nsformed into z scores. The resulting distribution of z-scores wil have a mean of zero. abse The null hypothesis is always stated in terms of sample statistics states that the treatment has no effect AI of the other choices are correct. is denoted by the symbol H1 The probability of committing a Type error is determined by the value for beta (A) that one selects is determined solely by the size of the treatment effect is determined by the level of significance (a) that one chooses cannot be controled by the experimenter Ina hypothesis test, a z score value near zero is strong evidence of a statistica significant effect ly means that you should probably reject the null hypothesis None of the other options are correct. is probably in the critical region In a hypothesis test, the critical region consists of sample values that provide proof that Ho istrue sample values that are highly likely to be obtained if Ho is true sample values that provide proof that Ho i false sample values that are very unlikely to be obtained if H0 is true A sample of n 25 individual is selected from a population with u Bo and a treatment is administered ls to the sample. If the treatment has a large effect, then the sample mean should be very different from Boand should lead you to reject the null hypothesis the sample mean should be close 80 and should lead you to fail to reject the null hypothesis the sample mean should be close to 80 and should lead you to reject the null hypothesis the sample mean should be very different from 80and should lead you to fail to reject the null hypothesis one assumption for a hypothesis test with z-scores is that the distribution of sample has a u the value of which is predicted by H1 None of the other choices is correct. based on less than 30 means is normal

Explanation / Answer

a) True, the lower the sigma, better the score

b) True

C) True

d) The null hypothesis states that treatment has no effect

e) the probability of committing type 1 error is determined by level of significance

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