Determine whether you can use a normal distribution to approximate the binomial distribution.
if you can, use the normal distribution to approximate the indicated probabilities and sketch their graphs.
if you cannot, explain why and use a binomial distribution to find the indicated probabilities. a survey of u. s. adults found that 64% watch nfl football. you randomly select 20 u. s. adults and ask them whether they watch nfl football.
find the probability that the number who watch nfl football is:

(a) exactly 10
(b) less than 7
(c) at least 15
(d) identify any unusual events.

explain.

What is the range for 31,39,29,34,37,24,36,33,34,28

State if the two triangles are congruent. if they are, state how you know?

Each of the following data sets has a mean of x = 10. (i) 8 9 10 11 12 (ii) 7 9 10 11 13 (iii) 7 8 10 12 13 (a) without doing any computations, order the data sets according to increasing value of standard deviations. (i), (iii), (ii) (ii), (i), (iii) (iii), (i), (ii) (iii), (ii), (i) (i), (ii), (iii) (ii), (iii), (i) (b) why do you expect the difference in standard deviations between data sets (i) and (ii) to be greater than the difference in standard deviations between data sets (ii) and (iii)? hint: consider how much the data in the respective sets differ from the mean. the data change between data sets (i) and (ii) increased the squared difference îł(x - x)2 by more than data sets (ii) and (iii). the data change between data sets (ii) and (iii) increased the squared difference îł(x - x)2 by more than data sets (i) and (ii). the data change between data sets (i) and (ii) decreased the squared difference îł(x - x)2 by more than data sets (ii) and (iii). none of the above