According to a certain website, wine crities generally use a wine-scoring scale to communicate their opinions on the relative quality of wines. Wine scores range from 0 to 100, with a score of 95-100 indicating a great wine, 90-94 indicating an outstanding wine, 85-89 indicating a very good wine, 80-84 indicating a good wino, 75-79 indicating a mediocre wine, and below 75 indicating that the wine is not recommended. Random ratings of a pinot noir recently produced by a newly established vineyard in 2018 follow: 87 91 86 82 72 91 50 77 80 79 83 96 (a) Develop a point estimate of mean wine score for this pinot noir (b) Develop a point estimate of the standard deviation for wine scores received by this pinot noir (Round your answer to four decimal places