Executives of a multinational oil and gas corporation know that among their customers, 40% use 87 octane gasoline, 23% use 89 octane gasoline, 18% use 91 octane gasoline, while the remaining 19% use diesel. A district manager, randomly selects several gas stations in her district and records the type of fuel consumption.
Could these findings be a strong basis for her to write a report about differences from the national figures.? Test at $\alpha$=0.025.

Question

Executives of a multinational oil and gas corporation know that among their customers, 40% use 87 octane gasoline, 23% use 89 octane gasoline, 18% use 91 octane gasoline, while the remaining 19% use diesel. A district manager, randomly selects several gas stations in her district and records the type of fuel consumption.
  Could these findings be a strong basis for her to write a report about differences from the national figures.? Test at $\alpha$=0.025.

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The Answer of Executives of a multinational oil and gas corporation know that among their customers, 40% use 87 octane gasoline, 23% use 89 octane gasoline, 18% use 91 octane gasoline, while the remaining 19% use diesel. A district manager, randomly selects several gas stations in her district and records the type of fuel consumption.
  Could these findings be a strong basis for her to write a report about differences from the national figures.? Test at $\alpha$=0.025.

Executives of a Multinational Oil and Gas Corporation Know That α\alphaα

Executives of a Multinational Oil and Gas Corporation Know That $\alpha$