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'0 i elearning.vsu.edu.phfmodlc E] O L'1 Question 27 Not yet answered Marked out of 1.00 17 Flag question No error committed when the null hypothesis is rejected when it is false. Select one: '19-) True U False Previous page Next page a Statistical Tables 19 1 8.92KB/s 7:27 4 61% elearning.vsu.edu.ph/mod/c 1 = Question 18 Not yet answered Marked out of 1.00 Flag question The arrangement ABC is the same as BAC for combinations. True or False? Select one: O True O False Previous page Next page - Statistical Tables# 1 0.34KB/s 7:27 61% The desired percentage of SiO2 (silicon dioxide) in a certain type of aluminous cement is 5.5. To test whether the true average percentage is 5.5 for a particular production facility, 16 independently obtained samples are analyzed. Suppose that the percentage of SiO2 in this sample has a mean of 5.25 and a standard deviation of 0.3. Does this indicate conclusively that the true average percentage differs from 5.5 at the 1% level of significance? For a two- tailed test, give the test statistic value, critical value, and answer to the question. Assume that the percentage of SiO2 in this type of aluminous cement can be taken to have a normal distribution in the population. a t~-3.333, to.005.(v=15) = 2.947, yes O b. t. ~-3.333, to.01.(v=15) = -2.602, no O c. to ~-3.333, to.01.(v=15) = -2.602, yes o d. to ~-3.333, to.005.(v=15) = 2.947, no1 1 9.50KB/s 7:28 4 60% elearning.vsu.edu.ph/mod/c 1 = Flag question A random experiment is conducted. Which of the following cannot be assigned as a probability of an event? O a. 24% O b. 0 O C. 1.65 O d. 2/3 Previous page Next page Statistical Tables Jump to...#1 9.38KB/s 7:28 4 60% elearning.vsu.edu.ph/mod/c 1 = Question SU Not yet answered Marked out of 1.00 Flag question All variables that are approximately normally distributed can be transformed to a standard normal random variable. True or False? Select one: True O False Previous page Next page - Statistical Tables Jump toHi1 10.7KB/s 7:28 4 60% elearning.vsu.edu.ph/mod/c 1 = Suppose that the first-year salary of a BS in Environmental Science graduate is normally distributed with a mean of P60,000 and a standard deviation of P15,000. Find the probability of a randomly selected BS in Environmental Science graduate earning between P61,500 and P70,000. (Note: In the calculation, round off Z-values to the nearest 2 decimal places. Report answer to 4 decimal places.) Answer: Previous page Next page - Statistical TablesJr'i' I 8-. 8 7' K B E; '0 i elearning.vsu.edu.phfmodlt E] 0 3'1 Marked out of 2.00 F Flag question A certain machine makes electrical resistors having a mean resistance of 40 ohms and a variance of 4 ohms squared. Assuming that the resistance follows a normal distribution and can be measured to any degree of accuracy, what percentage of resistors will have a resistance exceeding 43 ohms? (Round off answer to 4 decimal places.) Answer: Previous page Next page a Statistical Tables 191 8.27KB/s 7:28 4 60% elearning.vsu.edu.ph/mod/c 1 Marked out of 1.00 Flag question The critical region is the range of values of the test statistic that indicates that there is a significant difference and the null hypothesis should not be rejected. Select one: O True O False Previous page Next page Statistical Tables Jump to...Hi1 3.83KB/s 7:28 4 60% elearning.vsu.edu.ph/mod/c 1 = According to the American Pet Products Manufacturers Association, cat owners spend an average of $179 annually in routine veterinary visits. A random sample of local cat owners revealed that 10 randomly selected owners spent an average of $205 with standard deviation, s=26 dollars. Is there a significant statistical difference at 1% level of significance? What would be the value of your test statistic? O a. t = 3.126 O b. z = 3.126 O c. t = 3.162 o d. z = 3.162'0 i elearning.vsu.edu.phfmodlt E] O L'1 Question 21 Not yet answered Marked out of 1.00 F Flag question It is the collection of all possible outcomes of a random experiment. a. Data Set .;'_;. b. Probability . 0. Sample Space .; ' g. d. Event Previous page Next page t_ Statistical Tables #1 10.8KB/s 7:28 4 60% elearning.vsu.edu.ph/mod/c 1 Marked out of 2.00 Flag question There are twenty engineers eligible for three different executive positions in a multinational company. How many different ways can these positions be filled? O a. 8,000 O b. 6,840 O C. 1,140 O d. None of these. Previous page Next page - Statistical Tables'0 i elearning.vsu.edu.phfmodlc E] O . v = "1. Marked out of 1.00 F Flag question When you are testing the difference between two means, it is not important to distinguish whether the samples are independent of each other. Select one: U True U False Previous page Next page a Statistical Tables 0 Jump to
