Latasha is a waitress at Seventh Heaven Hamburgers. She wants to estimate the mean amount each group at a table leaves for a tip
. A random sample of 42 tables had a mean of = $7.30. Based on long term experience, s ≈ $2.92. Find a 90% confidence interval for the average amount left by all groups..
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Answer:
1015 widgets
Step-by-step explanation:
First investigate how many widgets can machine A produce in 1 hour:
If it produces 435 in 3 hours, then it will produce one third of that in one hour:
In ONE (1) hour widgets
Therefore in seven (7) hours it will produce seven times the amount it does in one hour, that is:
widgets