Use R code to answer:

1. Using the BodyTemperature.txt data set, find the point estimate and the 80% confidence interval estimate for the population means of heart rate and normal body temperature.

Data:
```
Gender Age HeartRate Temperature
M 33 69 97
M 32 72 98.8
M 42 68 96.2
F 33 75 97.8
F 26 68 98.8
M 37 79 101.3
F 32 71 97.8
F 45 73 97.4
F 31 77 99.2
M 49 81 99.2
M 40 69 97.5
F 45 70 97.7
F 49 71 98.3
F 37 74 98.8
F 47 79 98.5
M 34 73 97.3
F 41 71 98.9
M 33 77 98.6
F 38 70 99.2
F 31 69 97.9
F 41 67 97.1
F 45 67 97
F 36 74 98.9
M 35 77 99
F 28 76 97.9
M 25 79 98
M 30 76 97
M 41 61 97.6
M 37 84 99
F 37 67 97.8
F 34 73 97.9
F 34 81 100
M 50 68 97.1
M 48 76 98.9
M 34 80 98.6
F 36 68 97.7
F 21 70 98.3
M 23 79 98.9
F 42 76 99.4
F 33 75 98.6
M 37 73 97.2
M 33 72 98
F 36 77 99.3
M 43 81 99.4
M 36 73 98.8
M 29 64 98.5
F 36 69 98.4
F 44 80 98.6
F 30 80 97
F 38 67 98.2
M 41 78 99.6
F 43 73 98.9
M 42 77 97.3
M 41 66 96.5
F 36 71 98.2
F 34 78 99.3
F 36 69 98.2
M 41 72 97.8
F 41 73 98.3
F 40 73 97.4
F 40 72 98.2
M 33 75 98.3
M 35 75 98.1
F 37 68 98.8
M 43 82 98.8
M 31 67 97.7
F 44 75 96.8
M 47 78 98.3
M 44 72 97.7
M 37 80 99.1
F 30 67 97.9
F 34 80 98.3
M 32 74 98.8
M 44 78 97.4
M 46 87 96.9
M 45 74 98
F 35 71 98.3
M 42 69 98.4
F 46 87 100.8
M 22 81 100.3
M 49 75 97
F 49 83 99.2
F 43 78 99.8
M 31 70 99
F 36 76 98.8
M 38 78 100.6
M 40 75 98
M 40 75 98.5
F 44 70 97.1
M 48 72 97
F 34 79 98.7
F 30 78 99.9
M 25 67 97
M 38 63 98.6
F 39 69 98.4
M 42 69 97.8
F 38 69 99.7
F 40 79 98.7
F 34 71 99.2
M 35 62 97.3
```