Manager: Our company's mail-order sales have recently increased 25 percent. ████ ████████ ███████ ██████ ███ ████ ██ ███████ ████████ █████████ ████ █████████ ██████ ████ ████ ████ ████████ ██ ██████ ████ ████ █████ ███ ██████ ██ ██████ ████████ ██████ ███ █████████
The manager concludes that the policy change caused the increase in mail-order sales. He supports this by noting that mail-order sales increased 25%, starting around the time the company began offering free shipping on all orders, instead of just on orders over $50.
The manager assumes that there are no alternative hypotheses to explain the observed correlation— that is, he assumes there’s no other explanation for the recent increase in mail-order sales, like increased online ordering across companies or increased advertising.
Which one of the following, ██ █████ ████ ███████████ ███ █████████ █████████
Mail-order sales have ████ ██████████ ███ █████████ ████ ██ ███ █████ █████████ ████ █████████
The company did ███ ██████ █████████ ███ ██████ ██ ███████
The company's profits ████ ██████████ █████ ████ █████████ █████ ███ ██████ ██ ███████
The company's change ██ ██████ ████████ ████ █████ ███ ███████████ ███████ ████████ █████████ ████ █████████
Most companies offer ████ ████████ ████ ██ ██████████ █████████ ████ ████