Question: Customer Customer Response 1 Satisfied 2 Satisfied 3 Satisfied 4 Satisfied 5 Dissatisfied 6 Satisfied 7 Satisfied 8 Dissatisfied 9 Satisfied 10 Satisfied 11 Satisfied
Customer Customer Response 1 Satisfied 2 Satisfied 3 Satisfied 4 Satisfied 5 Dissatisfied 6 Satisfied 7 Satisfied 8 Dissatisfied 9 Satisfied 10 Satisfied 11 Satisfied 12 Satisfied 13 Satisfied 14 Satisfied 15 Satisfied 16 Satisfied 17 Satisfied 18 Satisfied 19 Satisfied 20 Satisfied 21 Satisfied 22 Satisfied 23 Satisfied 24 Satisfied 25 Satisfied 26 Satisfied 27 Dissatisfied 28 Satisfied 29 Satisfied 30 Satisfied 31 Dissatisfied 32 Satisfied 33 Satisfied 34 Dissatisfied 35 Satisfied 36 Satisfied 37 Satisfied 38 Dissatisfied 39 Satisfied 40 Satisfied 41 Dissatisfied 42 Satisfied 43 Satisfied 44 Satisfied 45 Satisfied 46 Satisfied 47 Dissatisfied 48 Satisfied 49 Satisfied 50 Satisfied 51 Satisfied 52 Dissatisfied 53 Satisfied 54 Satisfied 55 Satisfied 56 Dissatisfied 57 Satisfied 58 Satisfied 59 Satisfied 60 Dissatisfied 61 Satisfied 62 Satisfied 63 Satisfied 64 Satisfied 65 Satisfied 66 Satisfied 67 Satisfied 68 Satisfied 69 Satisfied 70 Satisfied 71 Satisfied 72 Satisfied 73 Dissatisfied 74 Satisfied 75 Dissatisfied 76 Dissatisfied 77 Satisfied 78 Satisfied 79 Satisfied 80 Satisfied 81 Satisfied 82 Satisfied 83 Satisfied 84 Satisfied 85 Satisfied 86 Satisfied 87 Dissatisfied 88 Dissatisfied 89 Satisfied 90 Satisfied 91 Satisfied 92 Dissatisfied 93 Satisfied 94 Satisfied 95 Satisfied 96 Satisfied 97 Satisfied 98 Satisfied 99 Dissatisfied 100 Satisfied 101 Satisfied 102 Satisfied 103 Satisfied 104 Satisfied 105 Satisfied 106 Satisfied 107 Satisfied 108 Satisfied 109 Satisfied 110 Satisfied 111 Satisfied 112 Satisfied 113 Satisfied 114 Satisfied 115 Satisfied 116 Satisfied 117 Satisfied 118 Satisfied 119 Satisfied 120 Satisfied 121 Satisfied 122 Dissatisfied 123 Satisfied 124 Satisfied 125 Satisfied 126 Satisfied 127 Satisfied 128 Satisfied 129 Satisfied 130 Satisfied 131 Satisfied 132 Satisfied 133 Satisfied 134 Dissatisfied 135 Satisfied 136 Satisfied 137 Satisfied 138 Satisfied 139 Satisfied 140 Satisfied 141 Satisfied 142 Satisfied 143 Dissatisfied 144 Satisfied 145 Satisfied 146 Dissatisfied 147 Satisfied 148 Satisfied 149 Satisfied 150 Dissatisfied 151 Dissatisfied 152 Satisfied 153 Satisfied 154 Satisfied 155 Satisfied 156 Satisfied 157 Dissatisfied 158 Satisfied 159 Satisfied 160 Satisfied 161 Satisfied 162 Satisfied 163 Satisfied 164 Satisfied 165 Satisfied 166 Satisfied 167 Satisfied 168 Satisfied 169 Satisfied 170 Satisfied 171 Satisfied 172 Satisfied 173 Satisfied 174 Satisfied 175 Satisfied 176 Satisfied 177 Satisfied 178 Satisfied 179 Satisfied 180 Satisfied 181 Satisfied 182 Satisfied 183 Satisfied 184 Satisfied 185 Satisfied 186 Satisfied 187 Satisfied 188 Satisfied 189 Satisfied 190 Satisfied 191 Satisfied 192 Satisfied 193 Satisfied 194 Satisfied 195 Satisfied 196 Satisfied 197 Satisfied 198 Satisfied 199 Satisfied 200 Satisfied 201 Satisfied 202 Satisfied 203 Satisfied 204 Satisfied 205 Satisfied 206 Satisfied 207 Satisfied 208 Satisfied 209 Satisfied 210 Dissatisfied 211 Satisfied 212 Satisfied 213 Satisfied 214 Satisfied 215 Satisfied 216 Satisfied 217 Satisfied 218 Satisfied 219 Satisfied 220 Dissatisfied 221 Satisfied 222 Satisfied 223 Satisfied 224 Satisfied 225 Satisfied 226 Satisfied 227 Satisfied 228 Satisfied 229 Satisfied 230 Satisfied 231 Dissatisfied 232 Satisfied 233 Satisfied 234 Satisfied 235 Satisfied 236 Satisfied 237 Dissatisfied 238 Satisfied 239 Satisfied 240 Satisfied 241 Satisfied 242 Satisfied 243 Satisfied 244 Satisfied 245 Satisfied 246 Satisfied 247 Satisfied 248 Satisfied 249 Satisfied 250 Satisfied 251 Satisfied 252 Satisfied 253 Satisfied 254 Satisfied 255 Satisfied 256 Satisfied 257 Satisfied 258 Satisfied 259 Satisfied 260 Dissatisfied 261 Satisfied 262 Satisfied 263 Satisfied 264 Dissatisfied 265 Satisfied 266 Satisfied 267 Satisfied 268 Satisfied 269 Satisfied 270 Dissatisfied 271 Satisfied 272 Satisfied 273 Satisfied 274 Satisfied 275 Satisfied 276 Dissatisfied 277 Satisfied 278 Satisfied 279 Satisfied 280 Dissatisfied 281 Satisfied 282 Satisfied 283 Satisfied 284 Satisfied 285 Satisfied
I need help with the exact formulas in excel on how to calculate the following.
1-2. In cell B3, find the number of customers who are "Satisfied" from the Data sheet.Hint: use the COUNTIF function. | |
3. In cell B4, find the sample size of the sample of customers who responded from the Data sheet. Hint: use the COUNTA function. | |
4. In cell B5, find the proportion of customers who are satisfied. | |
5. In cell B6, find the standard error of the proportion. Hint: Use the formula standard deviation = sqrt(p*(1-p)/n). | |
| 6. To build the confidence interval for the proportion of satisfied customers from the Data sheet, what is the appropriate probability table to use? Options: Normal Standard Distribution, T-disitributiom | |
7. In cell B8, find the value from the appropriate probability table to construct a 90% confidence interval. Hint: use the NORM.S.INV function. | |
8. In cell B9, find the margin of error at 90% confidence level. | |
9. In cell B10, find the upper limit for the population proportion at 90% confidence level. | |
10. In cell B11, find the lower limit for the population proportion at 90% confidence level. | |
| 11. Based on the numbers in cell B9 and B10, we can be 90% confident that Options: a) the true population proportion cannot be estimated using those numbers. b)the population proportion falls between those two numbers. c)the sample proportion falls between those two numbers. | |
12. In cell B13, find the width of the confidence interval at 90% confidence level. | |
13. In cell B14, find the value from the appropriate probability table to construct a 99% confidence interval. | |
14. In cell B15, find the margin of error at 99% confidence level. | |
15. In cell B16, find the upper limit for the population proportion at 99% confidence level. | |
16. In cell B17, find the lower limit for the population proportion at 99% confidence level. | |
17. In cell B18, find the width of the confidence interval at 99% confidence level. | |
| 18. By comparing the width of the confidence interval (CI) at 90% and 99%, what can we conclude about the width of the CI? Options: a)As the confidence level increases, the width of the CI increases. b)As the confidence level increases, the width of the CI decreases. c)The width of the CI does not depend on the confidence level. | |
| 19. Based on the upper and lower limit values for a 90% confidence level, can the gym's manager be 90% confident that 90% of his customers are satisfied? Options: a)Yes, because the interval does not contain 0.900. b) No, because the interval does not contain 0.900. c) Yes, because the interval contains 0.900. d) No, because the upper limit of the CI is less than 0.900. | |
| 20. Based on the upper and lower limit values for a 99% confidence level, can the gym's manager be 99% confident that 90% of his customers are satisfied? Options: a)Yes, because the interval does not contain 0.900. b) No, because the interval does not contain 0.900. c) Yes, because the interval contains 0.900. d) No, because the upper limit of the CI is less than 0.900. | |
| 21. What can the gym manager do to reduce the margin of error at 99% confidence interval? Options: a) The sample size is not related to the margin of error. b) Increase the sample size. c) Decrease the sample size. | |
| 22. In cell B23, find the required sample size to estimate the true proportion of satisfied customers within 3% margin of error, with 99% confidence. Hint: use the formula n = 0.25*(z_(alpha/2) / margin of error)^2. |
Step by Step Solution
There are 3 Steps involved in it
Get step-by-step solutions from verified subject matter experts