Given a message “Hello, World!” and a hash function H, if H (“Hello, World!”) produces the hash value “5eb63bbbe01eeed0934c4f570a7d8d27”, which property of the hash function is demonstrated?

If a hash function is not collision-resistant, what potential issue could arise in a digital signature scheme?

We use the code sepal_length

Suppose m is a matrix in R with 10 rows and 10 columns. How to get the element at the 3rd row and 5th column? 

Consider 8 lab mice, where each has an independent Poisson(lambda = 2) number of skin lesions. Which code performs one simulation of the total lesions across the 8 mice? 

Which code computes the sample standard deviation of the sepal_length vector created in the previous question?

You measured fluorescence intensities x and want the average of the log-transformed values (i.e., take log first, then average). Which R code does that?

The following frequency distribution table from the GSS 2010 shows the number of children each respondent had. The total number of respondents (N) is 2041.   What is the interquartile range of the distribution?   Number of Children Frequency (f) Cumulative Frequency (Cf) Cumulative Percentage (Cf%) 0 562 562 27.5 1 332 894 43.8 2 528 1422 69.7 3 392 1751 85.8 4 144 1895 92.8 5 61 1956 95.8 6 35 1991 97.6 7 18 2009 98.4 8 or more 32 2041 100   N = 2041    

The Table below lists the ages of 6 residents in a neighborhood.   Calculate the mean of the distribution.   Name Age Betty 32 Rosa 37 John 16 Charles 44 Ann 33 Colleen 24      

Roughly__________ % of the total area under the normal curve rests between the mean and one standard deviation above.