The data set at the bottom of this question provides the caffeine content in mg for 40 tested drinks (bottled coffees and energy drinks).

Use this data with a 0.05 significance level to test the claim that a bottled coffee or energy drink contains an average of more than 140 mg of caffeine. (Remember, you can still use Excel and/or Sheets for calculations.)

a.On your work upload paper, write the null and alternative hypotheses. Label which hypothesis is the claim.

b. The test statistic is t = __________ (Round to two decimal places.)

c. The critical value is t* = _____________-(Round to two decimal places.)

d. What is the decision? Select either 1: Do not reject the null, or 2: Reject the null. ____________ (Type 1 or 2 in the box.)

e.On your work upload paper, write out your conclusion: "There [is, or is not] enough evidence to [reject, or support] the claim that ..."

277

145

100

430

66

160

134

155

120

95

125

125

140

160

155

171

110

145

30

177

133

120

279

77

70

10

65

60

40

234

333

206

154

142

167

145

189

267

140

140