# Amu Quiz 1- Math 302

20.0 Points

Question 1 of 20

1.0 Points

If a variable has possible values –2, 6, and 17, then this variable is

A. both a continuous and a discrete variable

B. a continuous variable

C. neither a continuous nor a discrete variable D. a discrete variable Answer Key: D

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Question 2 of 20

Which of the following correctly describes the relationship between a sample and a population?

A. A population and a sample are not related. B. A sample is a group of subjects selected from a population to be studied. C. A sample is a group of populations that are subject to observation. D. A population is a group of samples that may or may not be included in a study

Answer Key: B

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Answer Key: 42.00|45.00

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Question 17 of 20

CEOSalaries.xls 14 KB

The following data are the base salaries, in thousands of dollars, of 50 chief executive officers for a sample of companies doing business with the state of Connecticut. That is, the first entry in the table below corresponds to a salary of $125,000. A copy of this data set can be found in the

Excel Workbook called CEOSalaries.xls. Use these data to answer questions 14 through 17.

125

157

113

127

201

165

145

119

148

158

148

168

117

105

136

136

125

148

108

178

179

191

225

204

104

205

197

119

209

157

209

205

221

178

247

235

217

222

224

187

265

148

165

228

239

245

152

148

115

150

Find the interquartile range of the CEO salaries, in thousands of dollars, rounded to 2 decimal places. Do not use a dollar sign. Note: $177,760 should be recorded as 177.76. 73

Answer Key: 68.00|74.00

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Question 18 of 20

A student scored 84 points on a test where the mean score was 79 and the standard deviation was

4. Find the student's z