Question

1. Make a box-plot for the following data:

34 36 39 43 51 53 62 63 73 79

2. The blood pressure of 40 women have a mean of 110.8 mm hg and a standard deviation of 17.1 mm hg. Is a measurement of 181 mm hg unusual?

Answer 1

1

For a box plot, the ends of the box are located at the first third quartiles. The median is the vertical line with the box, The whiskers of the box plot connents the ends of the box to the smallest and largest data values within 1.5 interquartile ranges from the ends of the box. Points outside these plots are outliers.

2
This is a normal distribution question with

Sample size (n) = 40
Since we know that

P(x < 181.0)=?
The z-score at x = 181.0 is,

This implies that


PS: you have to refer z score table to find the final probabilities.
Please hit thumbs up if the answer helped you