F12 Enter MAT 102 DAH Test # 1 F an Directions: Print this first DAH test and complete it on the provided answer pages. You should show your work because partial credit may be given for correct work. After you are finished, scan all your DAH Test #1 answer pages as ONE PDF document and SUBMIT using the ASSIGNMENT SUBMISSION TOOL in the DAH testing module. AFTER THE TEST IS GRADED, I WILL UPLOAD IT SO YOU CAN PRINT AND REVIEW IT. I don't need the TEST questions, just scan the answer pages. ALL WORK ON THIS EXAM MUST BE YOUR OWN. YOU ARE NOT PERMITTED TO WORK WITH ANYONE ELSE OR SEEK HELP FROM ANYONE ELSE. BEFORE SUBMITTING THE TEST, PLEASE SIGN THE STATEMENT AT THE END OF TEST STATING YOU DIDN'T RECEIVE OR GIVE HELP. DAH Test#1 is due THURSDAY. OCT. 13. 2022 BEFORE midnight. YOU CAN NOT SUBMIT THE T E TEST LATE. IT WILL NOT BE ACCEPTED. Name: _FALL 2022 Prof. DeSanto three months. 1. A sample of underweight babies was fed a special diet and the following weight gains (Ibs.) were observed at the end of 6.7 5.8 4.8 3.6 4.7 4.6 5.2 5.9 4.5 The mean and standard deviation respectively are: a. 5.09, 0.92 b. 5.1, 0.87 c. 5.08, 8.7 d. 5.09, 0.87 e. none of these 2. When measuring the center of the data in a skewed distribution, the median would be a preferred descriptive statistic over the mean for most purposes because: . the median is the most frequent number while the mean is most likely b. the median is less than the mean and smaller numbers are always appropriate for the center 3. the mean measures the spread in the data d. the mean may be too heavily influenced by outliers and doesn't give a good indication of the center e. the median measures the arithmetic average of the data excluding outliers 3. The distribution of the student heights at a large college is approximately bell shaped. If the mean height is 66 inches, and approximately 95% of the heights fall between 32 and 100 inches, then, the standard deviation of the height distribution is approximately equal to: a. 5 b. 10 c. 12 d. 17 e. 20 4. A student discovers that her grade on a recent test was the 55th percentile. If 180 students took the test, then approximately how many students received a lower grade than she did? a. 55 b. 65 c. 70 d. 82 e. 99 5. You recently took the SAT exam. Your score on the verbal portion was 725. You also notice that your score of 725 = Poo (where 800 is the possible top score). This means: a. at least 90% of the people got 725 or better. b. at least 800 people got 725 or better. c. at least 10% of the people got 725 or worse. d. your score of 725 was higher than 90% of the individuals who took the Verbal SAT. e. the percentile rank is 725. 6. The quiz scores of 15 students enrolled in a Statistics class were recorded in ascending order as follows: 4, 7, 7, 9, 10, 11, 13, 15, 15, 15, 17, 17, 19, 19, 20 After calculating the mean, median, and mode, an error is discovered..."one of the above quiz scores 15's is really a 17." The measures of center which will change are: a. the mean only b. the mode only c. the median only d. the mean and mode e. all three measures of central tendencyMAT 102: DAH TEST #1 Form F Nair TEST SCORE " was given to a population of 1,090 students. However, only sev heir respective a score and percentile rank in the following table. 58 z score 64 76 per -3 percentile rank -2 79 85 88 Name: FALL 2022 Prof. DeSanto MAT 102: DAH TEST #1 Form F 7 - 8. An achievement exam was given to a population of 1,000 students. However, only seven of these 1,000 student scores SCO all are listed along with their respective z score and percentile rank in the following table. TEST SCORE 58 64 76 79 85 88 91 94 z score -3 -2 0 0.5 1.5 2 2.5 3 percentile rank 15 5 35 40 50 65 90 97 7. Using the table information, the mean (to the nearest whole number) test score for all the 1.000 students with the appropriate symbol to denote this result is: a) x = 80 b) u = 79 C) x = 79 d) u = 76 e) x = 76 8. Using the table information, the median test score for all the 1.000 students is: a) 85 b) 79 C) 82 d) 76 e) none of these 9. Using the table information, the standard deviation of all the 1.000 students with the appropriate symbol used to denote this result is: a) o= 12 b) s = 4 co= 8 d s = 6 e) o = 6 10. If the mean test score of a distribution of statistics exam scores is 72 with a standard deviation of 15, then determine the approximate test score (to one decimal place) of a student that was 1.53 standard deviations below the mean? a) 70.5 b) 49.1 C) 68.8 d) 57.7 e) cannot be estimated 11. Suppose a frequency distribution is skewed with a median of $85.00 and a mode of $90.00. Which of the following is a possible value for the mean of distribution? a. $86 b. $91 c. $64 d. $105 e. none of these 12. If a population of college student ages is skewed right, then this indicates: a. there are more older students within the population b. the median age is greater than the mean age c. as the age of a student increases, the frequency of the student ages also increases. d. there is a greater number of younger students within the population. e. not enough information 13. If the statistics for family income in a certain community are: mean = $37,000; median = $25,000; mode = $23,000; range = $15,000 and variance = $36000000 then which one of the following statements is NOT correct? a. most of the families made $23,000 b. $31,000 is one standard deviation below the mean c. the standard deviation is $6000 d. the income $25,000 is the second quartile e. the z score of the income $46,000 is 1.25