Which R code returns the number of observations (rows) in the built-in dataset iris?

Consider the previous question again. After one week, how many of the 100 students would you expect to have 0 seeds germinate in their tray? (At least 2 decimals.)

A social researcher is interested in studying the relationship between an abstinence-only program and teen pregnancy. To test her hypothesis, she compares the results of 50 teens participating in an abstinence-only program to 50 teens participating in a more conventional sex- education program. What type of research is this?

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 median number of children?   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    

A distribution with a mean of 25, a median of 22.5, and a mode of 20, is said to be:

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

The new CEO of Shopify in Ottawa wants to restructure the company based strictly on the open systems view of organizational behaviour. Which specific strategic initiative should the CEO implement to align with this perspective?

A project team at Rogers in Toronto consists of members who share the exact same age, gender, and educational background. Despite these similarities, the manager notices the team is paralyzed by constant arguments regarding ethical goals. Based on diversity frameworks, what is the most likely root cause of this team paralysis?

Extra Credit: A. What is organelle the arrow is pointing at?B. What is the function of this organelle? 

What is this bone?