1. Given n= 36, x = 786, o= 48, µ= 800 to test the hypothesis that u=800 against u 800. What is the test statistic used? A. z = D. t= B. z = C. t= -H 2. What is type I error? C. Reject Ho if Ho is true D. Reject Ho if Ho is false A. Fail to reject Ho if Ho is true B. Fail to reject Ho if Ho is false 3. It is claimed that a random sample of 49 tires has a mean life of 15200 km. This sample was drawn from a population whose mean is 15150 km and standard deviation of 1200 km. Test the claim at the 0.05 level of significance. A. -0.29 В. 0.39 C. 0.29 D. -0.39

A sample of blood pressure measurements is taken for a group of​ adults, and those values​ (mm Hg) are listed below. The values are matched so that 10 subjects each have a systolic and diastolic measurement. Find the coefficient of variation for each of the two​ samples;then compare the variation.   a. The coefficient of variation for the systolic measurements is ​(Type an integer or decimal rounded to one decimal place as​ needed.)   b. The coefficient of variation for the diastolic measurements is ​(Type an integer or decimal rounded to one decimal place as​ needed.)

1:37 PM Wed Apr 21 * 72% 88 Q Stats Exam •.. Untitled Notebook (1) Stats Exam 37. The manager of Green Valley medical center claims that the median number of patients seen by doctors who work at the center is 85. To test this claim, 20 days are randomly selected and the number of patients seen is recorded as shown. At a=0.1, test the claim. (Use sign test) 86 82 90 88 85 85 94 93 69 61 89 90 91 94 78 85 71 77 69 77

If X = 85, Y = 54, and Y' = 62, what is the residual score? a. -8 b. 23 c. 8 d. 31

number 23 on attached photo

Suppose that a customer is purchasing a car. He conducts an experiment in which he puts 10 gallons of gas in the car and drives it until it runs out of gas. He conducts this experiment 15 Sample mean for Car 2 x= 245 mi / 10 gal (Type an integer or decimal rounded to one decimal place as needed.) times on each car and records the number of miles driven. Full data set Car 1 Median for Car 1 M= mi / 10 gal (Type an integer or decimal rounded to one decimal place as needed.) 245 242 215 244 220 265 291 160 284 251 169 319 257 306 267 Car 2 Median for Car 2 230 242 M=O mi / 10 gal 206 214 236 256 245 255 241 264 (Type an integer or decimal rounded to one decimal place as needed.) 276 252 250 251 257

Only part e please

Please help me with d. The answer there is incorrect

in uncam dIfferent from the mean amount of airborne bacteria in uncarpeted rooms. To test this, carpeted and ount of bacteria on the dish was recorded The results are presented in the following table: Uncarpeted rooms Carpeted rooms 12.1 9.8 Sample mean of bacteria per ft' Sample std. dev. of bacteria per ft Number of rooms tested 3.2 2.7 23 %3D U.05 to see test if the amount off airborne bacteria is different in carpeted rooms than in uncarpeted rooms. I. State your hypotheses II. State the allowable type I error rate (a.) III. Calculate your test statistic, the p-value and draw the physical representation of the p-value IV. Make your decision to either reject the null or fail to reject the null. V. Make a concluding statement. b.) Run a 95% confidence interval for the hypothesis test above. Don't forget to make a proper conclusion.

the differenc a. Calculate of differ 2. Participants enter a research study with unique charac- teristics that produce different scores from one to another. For an independent-measures study, these individual differences can cause problems. Identify the problems and briefly explain how they are eliminated or reduced with a repeated-measures study. measures person measure b.Calcula the sam what is error ןויוייןיןיויןייי "ll י'יויוי ןיייוווויייוייייווי ן'וייוויוייוייויוו