The scores of a psychology exam were normally distributed with a mean of 70 and a standard deviation of 5 a failing grade on the exam was anything two or more standard deviations below the mean what was the cutoff for a failing score

What are the coordinates of the midpoint of ab? ,1/2) /2,-1) ,-3/2) /2,-2)

For the sequence [tex]a_{n} = 2n/(n+1)[/tex], what is the value of [tex]a_{10}[/tex]

Mahnoor randomly selects times to walk into a local restaurant and observe the type of music being played she found that the restaurant was playing country 11 times rock & roll 17 times and blues 8 times use the observed frequencies to create a probability model for the type of music the restaurant is playing the next time mahnoor walks in.