Many are saying Mammoth has experienced a 50-year record breaking December snowfall. A Bishop, CA meteorologist would like to test if the previous 50-year average snowfall is significantly lower than the recent December 2021 snowfall. To do so, she collects the inches of snowfall from 1970 to 2020 to compare this 50-year average to the December 2021 snowfall of 194 inches.

Click here for the Excel data file

Snowfall

165

146

79

109

160

161

175

162

178

174

178

157

161

163

100

33

160

177

72

43

145

74

179

164

51

118

163

104

150

152

173

44

107

73

100

108

178

159

171

84

179

96

142

92

172

76

132

133

176

180

a.Specify the null and alternative hypotheses.

H(O): __________?____________. ____?___. ____?____

H(A): ___________?___________ _____?___. _____?___

1. What are the values for the test statistic and p-value?(Round to 4decimal places)

Test statistic = _____?___

p-value = _____?______

1. At the 5% significance level, what are the decision and conclusion for thistest?
2. _____?___. ______?____. Therefore, we ____?______ conclude
3. __________________________?________________________