1- Solve the problem. Elaine gets grades of 71, 75 and 64 in a test. Finish with 60 in your final exam. Calculate the weighted average if the test weigh 20% and the final exam 40% of the final grade. Round to a decimal

at. 66

b. 68.2

c. 67.5

D.65

2- Solve the problem The results of a test obtained have an average of 70 and a standard deviation 11. Michelle has a score of 48. Convert the score Michelle has a score z.

at. -2

B.22

c. -22

d. 2

3- Find the average data interval for the given sample.49, 52, 52, 52, 74, 67, 55, 55

at. 12.5

b. 61.5

c. 25

d. 53.5

4- Find the standard deviation for the data of the given sample. Round a decimal that responds more than the originals.19 Data, 6, 19, 15, 14, 5, 18, 15, 13

at. 1.7

b. 4.9

c. 5.5

d. 5.2

5 - Quickly identify which of these types of sampling was used: random, stratified, systematic, a group of 500 local truckers A market enumerator selects the under-30s and over 500 30-year-old truckers.

at. systematic

b. random

c. Convenience

d. laminate

6 - Find the variance of the given data. Round up your answer by one decimal more than the original data.18, 20, 18, 2, 7

at. 64.0

b. 99.2

c. 63.9

d. 51.2

7 - Find the range of the given sample.Rich Master Limit Chemistry 101. Last week, you put a test to your students. The results of the following points30, 31, 47, 29, 32, 11, 48, 41, 50, 59, 37,22

at. 48

b. 59

c. 2

d. 11

8 - Find the means of the given data. On the contrary Less than what is indicated, redundant decimal closer to the original data Friends Andres Seven the question SUS has how many cousins they had. The result is to list a continuation. Find the averages of the number of prime numbers.18, 12, 7, 13, 7, 2, 7

at. 8,9 cousins

b. 9.4 cousins

c. 10.9 weeks

d. 11 cousins

9 - FIND The 55th percentile value for the following data: Data set: 55, 38, 30, 66, 67, 68, 44

at. 20

b. 50

c. 57

d. 43

10- Find the indicated measure The weights (in pounds) of the 30 years born alive and to come.

5.5 5.7 5.8 5.9 6.1 6.1 6.4 6.5 6.5 6.6

6.7 6.7 6.7 6.9 7.0 7.0 7.1 7.2 7.2 7.2

7.4 7.5 7.7 7.7 7.8 8.0 8.1 8.1 8.7 8.7

Find P16.

at. 5.9 lbs

b. 6.0 lbs

c. 4.8 lbs

d. 6.1 pounds

11 - Perform the requested conversions. Convert 0.368 to equivalent fraction, there is a percentage.

a.9 / 25, 36.8%

b. 9/25, 3.68%

c. 46/125, 36.8%

d. 46/125, 3.68%

12 - Use the rule of thumb to solve the problem. The systolic blood pressure of 18-year-old women AGE if normally distributed. A medium of 120 mmHg and a standard deviation of 12 mmHg. What percentage of women 18 years of age have systolic blood pressure between 96 mmHg and 144 mHg?

at. 68%

b. 95%

c. 99.7

d. 99.99