Question

In: Statistics and Probability

The new manager of a theater plans to offer discounts to increase the number of tickets...

The new manager of a theater plans to offer discounts to increase the number of tickets sold for shows on Monday and Tuesday evenings. She uses a sample of 30 weeks to record the number of tickets sold on these two days. A portion of the data is shown in the accompanying table.  

Monday Tuesday
221 208
187 199
272 175
199 196
235 205
221 202
227 204
228 196
183 202
236 197
238 190
191 196
210 173
220 193
222 191
245 212
223 169
211 180
226 187
239 173
264 196
207 184
230 193
207 197
204 173
253 181
223 174
230 182
225 194
194 180

a) Using excel Produce a 95% CI for the mean number of tickets sold for shows on Monday evening, using the format discussed in class. The dataset descriptions for this question may be inadequate. As you answer this question 'warn" about important missing information in your conditions assessment. Once you have completed your conditions assessment clearly list any assumptions that need to be made. After you list the required assumptions – if any - presume that everything is OK, and answer the rest of the question.

b) Is there any evidence that the population mean differs from 200 for shows on Monday evenings?

Solutions

Expert Solution

a) We assume that the distribution is approximately normal.

if the sample size is large , then the sampling distribution will be approximately normal

b)

Test statistic:

Since the P-value is less than the significance level , we shall reject the null hypothesis. Thus we have evidence that the population mean differs from 200 for shows on Monday evenings.


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