Mr. Brown is the owner of a small bakery in a large town. He believes that the smell of fresh baking will encourage customers to purchase goods from his bakery. To investigate his belief, he records the daily sales for 10 days when all the bakery's windows are open, and the daily sales for another 10 days when all the windows are closed. The following sales, in dinars, are recorded: Windows 202.0 215.5 190.8 204.1 204.5 207.0 215.6 208.8 187.8 185.7 open Windows 193.5 192.2 199.4 177.6 205.4 200.6 | 169.2 172.2 181.8 192.8 Closed Assuming that these data may be deemed to be random samples from normal population with the same variance, investigate the baker's belief.

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Mr. Brown is the owner of a small bakery in a large town. He believes that the
smell of fresh baking will encourage customers to purchase goods from his
bakery. To investigate his belief, he records the daily sales for 10 days when all
the bakery's windows are open, and the daily sales for another 10 days when all
the windows are closed. The following sales, in dinars, are recorded:
Windows 202.0
204.5
207.0
215.5
190.8
215.6
208.8
187.8
204.1
185.7
open
Windows 193.5
192.2
199.4
177.6
205.4
200.6
181.8
169.2
172.2
192.8
Closed
Assuming that these data may be deemed to be random samples from normal
population with the same variance, investigate the baker's belief.
Transcribed Image Text:Mr. Brown is the owner of a small bakery in a large town. He believes that the smell of fresh baking will encourage customers to purchase goods from his bakery. To investigate his belief, he records the daily sales for 10 days when all the bakery's windows are open, and the daily sales for another 10 days when all the windows are closed. The following sales, in dinars, are recorded: Windows 202.0 204.5 207.0 215.5 190.8 215.6 208.8 187.8 204.1 185.7 open Windows 193.5 192.2 199.4 177.6 205.4 200.6 181.8 169.2 172.2 192.8 Closed Assuming that these data may be deemed to be random samples from normal population with the same variance, investigate the baker's belief.
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