Answer:
132 ft²
Step-by-step explanation:
If you combine the two triangles of the 'roof', you get a rectangle of 6x5.5=33, where 6 is calculated as 15-9 and 5.5 comes from 11/2.
Add to that the area of the rest of the 'house', which is a rectangle of 9x11=99
and the total area is 63+99 = 132.
Answer:
The correct option is b) 1.70
Step-by-step explanation:
Consider the provided information.
The weekly sulfur dioxide emissions follow a normal distribution with a mean of 1000 ppm (parts per million) and a standard deviation of 25.
Thus, μ=1000 and σ = 25
The CEO wants to know if the mean level of emissions is different from 1000.
Therefore the null and alternative hypothesis is:
and 
The sample size is n = 50 and
ppm.
Now calculate the test statistic by using the formula: 
Substitute the respective values in the above formula.


Hence, the correct option is b) 1.70
Answer: The new price is $840