(a) Assume that 82% of a baseball pitcher’s throws are strikes. After throwing 100 pitches in a game, what is (a) the expected number of strikes and (b) what is the standard deviation?

(b) What is the 90% confidence interval of the percentage of 100 successful shot attempts in basketball. Assume p-hat is 34%.

(c) Write a null and alternate hypothesis for the below scenario.
The average size of a fish in the children’s pond is 7 pounds. You check the weights of 30 fish to verify whether to accept or not accept that advertised average weight.

Answer rating: 100% (QA)

a For part a we can use the properties of the binomial distribution since each pitch can be considered a binary outcome strike or not a strike a The e... View the full answer