Answer:
Yes, it is a valid random sample for if I were to randomly survey 50 people from the phone books of 20 randomly chosen cities.
Step-by-step explanation:
Because a random sample, means, the following: a subset of a statistical population in which each member of the subset has an equal probability of being chosen. And the randomly survey 50 people from the phone books of 20 randomly chosen cities matches this meaning.
The rate of water level change per hour is 1.5 inches per hour. You can find it out easily by dividing the total time by the total level change. Hope this Helps:)
Answer:
A consumer pays $5 more per camera.
Step-by-step explanation:
Let the cost of manufacture of disposable camera in dollars be
Government taxes imposed on camera = $1.00 per camera
Cost of camera after taxes in dollars
Wholesale prices raised by manufacturer = $2.00 per camera
Wholesale price of camera in dollars per camera
Retail prices raised raised by retailer = $2.00 per camera
Retail price of camera in dollars per camera
Difference in prices of manufacture and retail price per camera in dollars
⇒
⇒
Thus, a consumer pays $5 more per camera.