please help with 1-6

1. [-/2 Points] DETAILS BBBASICSTAT8 9.TB.003. MY NOTES A z-score that is used for hypothesis testing is also called one of the following. test statistic O level of significance O critical region O critical value 2. [-/2 Points] DETAILS BBBASICSTAT8 9.TB.017. MY NOTES A Type I error means that a researcher has done the following. O concluded that a treatment has no effect when it really does O concluded that a treatment has an effect when it really does O concluded that a treatment has no effect when it really has no effect O concluded that a treatment has an effect when it really has no effect 3. [-/2 Points] DETAILS BBBASICSTAT8 9.TB.018. MY NOTES The probability of committing a Type I error is the following. O cannot be controlled by the experimenter O is determined solely by the size of the treatment effect O is determined by the value for beta () that one selects O is determined by the level of significance (@) that one chooses 4. [-/2 Points] DETAILS BBBASICSTAT8 9.TB.026. MY NOTES A researcher expects a treatment to produce an increase in the population mean. The treatment is evaluated using a one tailed hypothesis test, and the test produces z = -1.85. Based on this result, what is the correct statistical decision? O The researcher should reject the null hypothesis with a = .05 but not with a = .01. O The researcher should reject the null hypothesis with either a = .05 or a = .01. The researcher should fail to reject H. with either a = .05 or a = .01. O cannot answer without additional information5. [-I2 Points] BBBASICSTAT8 913.054. In general, the null hypothesis states that the treatment has no effect on the population mean. 0 True 0 False 6. [-l10 Points] BBBASICSTATB 9.1.017. Weatherwise magazlne is publlshed in association with the American Meteorological Society. Volume 46, Number 5 has a rating system to classify Nnr'easter storms that frequently hit New England states and can oause much damage near the ocean coast. A severe storm has an average peak wave height of 16.4 feet for waves hitting the shore. Suppose that a Nor'easter is in progress at the severe storm class rating. (a) Let us say that we want to set up a statistical test to see if the wave action (i.e., height) is dying down or getting worse. What would be the null hypothesis regarding average wave height? 0 p 16.4 0 \"15.4 (b) If you wanted to test the hypothesis that the storm is getting worse, what would you use for the alternate hypothesis? 0 [4 = 16.4 0 u 16.4 0 us16.4 (c) If you wanted to test the hypothesis that the waves are dying down, what would you use for the alternate hypothesis? 0 u = 16.4 0 14 16.4 (d) Suppose you do not know if the storm is getting worse or dying out. You just want to test the hypothesis that the average wave height is different (either higher or lower) from the severe storm class rating, What would you use for the alternate hypothesis? 0 p > 16.4 o \"16.4 o p = 16.4 o ,4