catie help (1) - Last name Enter your LETTER answers HERE 1...

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Last name: First name: Enter your LETTER answers HERE 1 Note: 2 When done, using your last name and firstname, save THIS FILE as, 3 E270Lastname Firstname HW4 4 (No space between E270 and Last name) 5 E-mail to as an attachment. 6 7 Example: 8 E270Smith Adam HW4 YES 9 E270 Smith Adam HW4 NO 10 11 12 13 14 15 PAY ATTENTION 16 17 18 19 20 Questions 1-3 are based on the following "POPULATION" data (N = 72): 132 85 148 166 59 141 175 112 145 174 40 74 57 92 103 97 183 110 158 45 159 49 101 187 118 138 189 157 173 101 76 91 49 134 78 184 192 128 50 59 84 96 153 133 181 112 200 137 115 161 97 50 112 164 168 141 195 192 94 52 88 154 143 189 180 49 142 72 139 96 77 116 1 a 148,426,963 156238908 b 156,238,908 c 162,488,464 d 168,988,003 2 A random sample of size n = 6 is selected. The data in the highlighted cells above are shown below. x 59 112 45 115 50 141 [email protected] If sampling is done without replacement, the number of possible samples of size n = 6 from the above population is __________
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The mean and variance of this sample are: x x 87 a 87 2060.5 1648.40 b 87 1648.4 c 84 2060.5 d 84 1648.4 3 Use Excel rather than your calculator to do the calculations. a 114.90 b 117.30 122.09722 c 119.70 d 122.10 Questions 4-8 are based on the following: 4 a 0.5284 b 0.5034 0.43451435 c 0.4648 d 0.4314 For the sample means computed from the number of random samples determined in question 1, the expected value or mean of sample means is ______. The mean cost of getting a four-year college degree in a certain region of the country is $55,800 with a standard deviation of $ 8,700 . Assume costs are normally distributed.
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