The following data discusses the amount of change received after a cash purchase.
Stems | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
0 | 1 | 1 | 3 | 4 | 5 | 6 | 8 | 8 | 9 | 9 |
1 | 4 | 8 | 8 | 9 | ||||||
2 | 2 | 3 | 7 | 7 | 8 | 8 | ||||
3 | 2 | 3 | 7 | |||||||
4 | 0 | 3 | 8 | |||||||
5 | 2 | 3 | 5 | 7 | 9 | |||||
6 | 0 | 2 | ||||||||
7 | 1 | 6 | ||||||||
8 | 2 | 4 | 9 | |||||||
9 | 5 |
Construct and interpret a 95% confidence interval for the mean amount of change received after a purchase using cash.
The following data discusses the amount of change received after a cash purchase. Stem and Leaves...
Consider the following stem and leaf display for a set of sample data. Stem Leaves (unit = 0.01) 0 |9 1 |5 6 2 |1 a 8 9 3 |2 3 5 7 8 4 |4 5 b 9 5 |2 3 9 (a) (i) Find the 1st Quartile (?1) and 3rd Quartile (?3) in terms of a and b. (2 marks) (ii) Suppose the inter-quartile range is 0.22 and the distances between the two quartiles and the median...
(a) Construct a stem-and-leaf display for these data by filling in the following character Note: 1) the leaf unit-100; 2) z means leaves 0 and 1; 3) T means leaves 2 and 3; 4) F means leaves 4 and 5; 5) S means leaves 6 and 7 6) o means leaves 8 and 9 OF OS 10 00 188899 1z 1000000011111 1T 122222223333 444445555555555 (15) lo 1888899 22 011 b) Calculate the median and quartiles of these data
The stem-and-leaf plot below shows the marathon training times (in minutes) for a random sample of 30 female runners. Training Times (in minutes) of Female Runners 17 8 9 9 Key: 17 8 = 178 18 0 0 0 0 1 2 3 4 6 6 7 9 19 0 0 0 1 3 4 5 5 6 6 20 0 0 0 1 2 3 Provided the data from the stem-and-leaf plot above answer the following questions. a) Use...
The stem-and-leaf plot below shows the marathon training times (in minutes) for a random sample of 30 female runners. Training Times (in minutes) of Female Runners 8 99 Key: 17 8 = 178 18 0 0 0 0 1 2 3 4 6 6 7 9 19 0 0 0 3 4 5 5 6 6 20 0 0 1 2 3 Provided the data from the stem-and-leaf plot above answer the following questions. 1 a) Use the sample to...
T confidence interval ( 95% ) how can I construct 2 samples ( STEM and NON-STEM ) confidence interval for the population mean? Hours studied: Stem vs Non-Stem Stem Non-Stem 4 2 0 5-9 10-14 15-19 20-24 25-30 31+ 0-4 Stem Non-Stem 0-4 5-9 10-14 15-19 20-24 25-30 31+ Hours studied: Stem vs Non-Stem Stem Non-Stem 4 2 0 5-9 10-14 15-19 20-24 25-30 31+ 0-4 Stem Non-Stem 0-4 5-9 10-14 15-19 20-24 25-30 31+
The data in the accompanying table represent the length of life, in seconds, of 50 fruit flies subject to a new spray in a controlled laboratory experiment. Complete parts (a) through (d) below. 17 23 10 19 23 18 12 20 16 24 23 15 3 8 14 5 6 9 14 7 18 18 9 13 3 30 10 6 10 34 22 8 18 26 9 4 28 21 18 9 7 11 4 15 15 9 9...
Use a stem-and-leaf plot to display the data. The data represents the amount of hours employees at a certain company spend driving to and from work for a given month. What can you conclude about thedata? 3636 54 35 48 38 40 36 50 47 5151 4343 5353 2727 2525 6464 39 6262 41 3434 3737 Determine the leaves in the stem-and-leaf plot shown at the right. Stems Leaves 2 nothing 3 nothing 4 nothing 5 nothing (Key: 1 |...
Construct a stem-and-leaf plot of the test scores 67 comma 72 comma 85 comma 75 comma 89 comma 89 comma 88 comma 90 comma 98 comma 100.67, 72, 85, 75, 89, 89, 88, 90, 98, 100. How does the stem-and-leaf plot show the distribution of these data? Construct the stem-and-leaf plot. Choose the correct answer below. A. Stem Leaves 6 77 7 2 62 6 8 5 6 9 85 6 9 8 9 0 90 9 10 0 B....
The following stem-and-leaf plot represents the test scores for 22 students in a class on their most recent test. Use the data provided to find the quartiles. Test Scores by Student Stem Leaves 5 0 1 7 7 8 8 8 8 6 2 2 3 5 5 6 7 7 3 4 5 8 3 5 6 9 Key: 5||0=50 Step 1 of 3: Find the second quartile.
The Environmental Protection Agency (EPA) is concerned about the amount of chloride in household water supplies. In a sample of 18 households, the amounts (in mg/L) of chloride was recorded, as follows: 16 0 0 2 3 6 8 2 5 0 12 10 5 7 2 8 6 9 (a) Calculate the mean, standard deviation and standard error of the mean for the above data. (b) Construct and interpret a 98% confidence interval for the true mean amount of...