Do not reject the null hypothesis, and conclude that the television increases revenue.
Reject the alternative hypothesis, and conclude that the television increases revenue
Reject the null hypothesis, and conclude that the television increases revenue.
The manager of a factory that is making an average of 14,000 pints of ice cream
a day decides to start playing music for employees, believing this decision will
increase both employee morale and productivity. However, the manager is
concerned about the possibility that the music could distract employees, thereby
decreasing productivity. After a month of playing music, the factory was making
an average of 13,518 pints a day. The manager runs a two-sided hypothesis test
to determine if the number of pints produced has changed. The p-value of the test
is 0.238. What does this say about ice cream production?
If a standardized test has a mean score of 500 and standard deviation of 100,
what percentage of test-takers score between 500 and 600?