The stem-and-leaf plot below shows the marathon training times (in minutes) fora random sample of 30 female runners. Training Times (in minutes) of Female Runners 8 99 00 0 0 1 2 3 4 6 6 79 1 0 0 1 3 4 5 5 6 6 00 1 2 3 17 Key: 17|8 = 178 18 19 20 Provided the data from the stem-and-leaf plot above answer the following questions. 1. Use the sample to find a point estimate (round to 2 DP) for the mean training time of the female runners. 2. Find the sample standard deviation (round to 2 DP) of the training time for the female runners. 3. Use the sample to construct a 95% confidence interval for the population mean training time of the female runners.

The following data are the scores of  19  students on an algebra test. 62 ,  84 ,  87 ,  92 ,  55 ,  75 ,  85 ,  63 ,  58 ,  70 ,  60 ,  86 ,  95 ,  61 ,  92 ,  65 ,  84 ,  75 ,  64 Send data to calculator Send data to Excel Using the tool provided, construct a box-and-whisker plot (sometimes called a boxplot) for the data.             55 60 65 70 75 80 85 90 95 Score on algebra test

Here is a data set: 42 42 51 58 35 47 41 37 41 55 40 53 43 49 45 53 35 47 52 43 You are examining the data with a split stem-and-leaf plot. Here is the start of the plot: 3 | 557 4 | 0112233 4 | 5779 5|| 5 | What should be entered in the last row of this table? 5|

Below are numbers of hours that a sample of 18 recent college graduates reported working last week. 55 48 46 64 68 43 37 44 63 54 45 48 52 39 50 51 65 38 Construct a box and whisker plot for the data.

Use a stem-and-leaf plot to display the data, which represent the numbers of hours 24 nurses work per week. Describe any patterns. 40 40 46 48 31 40 27 40 36 40 36 36 52 32 36 40 35 D 40 33 40 32 38 30 29 Determine the leaves in the stem-and-leaf plot below. Key: 313=33 Hours worked 3 4 51 (---))

The following table presents the daily high temperatures for the city of Macon, Georgia, in degrees Fahrenheit, for the winter months of January and February in a recent year. 58 51 71 58 59 67 52 73 64 64 58 67 53 53 63 75 76 61 52 52 68 67 48 55 69 63 58 56 56 63 74 65 57 53 48 70 76 51 65 60 61 Send data to Excel Construct a stem-and-leaf plot, using the digits 4, 5, 6, and 7 as the stems. Do not separate the answers with a comma. If there are no leaves, select the "None" button. 4 None 5 5 6 7 8 ME ›

The following table presents the daily high temperatures for the city of Macon, Georgia, in degrees Fahrenheit, for the winter months of January and February in a recent year. 67 52 73 58 51 71 58 59 64 64 58 67 53 53 63 75 76 61 52 52 68 67 48 55 69 63 58 56 56 63 74 65 57 53 48 70 76 51 65 60 61 Send data to Excel Construct a stem-and-leaf plot, using the digits 4, 5, 6, and 7 as the stems. Do not separate the answers with a comma. If there are no leaves, select the "None" button. 4 None 5 6 S 7 X