Answer: Type I error would be a conclusion that average time spent on phone by teenager is higher than 4.5 hours per week which is actually the same.
Step-by-step explanation:
Type 1 error occurs when a null hypothesis is true but researcher rejects it.
Let 
be the average time spent on the phone by teenagers .
Here, Null hypothesis: 
Alternative hypothesis : 
So, Type I error would be a conclusion that average time spent on phone by teenager is higher than 4.5 hours per week which is actually the same.
Answer: The car has a value of $17,500.
Explanation: The car was originally bought at $25,000 and was depreciated over 5 years by $1,500 a year. Over 5 years, the car would be depreciated by a total of $7,500 because $1,500 x 5 years equals $7,500 in total. Since you would distract the total depreciation cost from the original value to find the current value of the car, after 5 year of use, the car would be worth $17,500.
I think it’s 20 bucks, right?
The given figure can be divided in two parts 1) Square with side 7 in 2) A right triangle with base 12 in and height 7 in.
1) Area of square = 
Side of the square is 7 in.
Area = 
2) Area of triangle = 
Area of triangle =
Area of polygon= Area of square+ Area of triangle
Area of polygon = 49+42 =91 square in.
Area = 
