Answer:
<em>I think it's A?</em>
Step-by-step explanation:
9% of $2800 = 252
$2800 + $252 = $3052
Answer:
94.3?
Step-by-step explanation:
Well, the straight line is 180 degrees, there is a 90 degree square, and a 13 degree angle. So add them up and divide by three?
Answer:

Step-by-step explanation:
Average life of electric bulbs = 300 hrs
standard deviation = 45
Total no of bulbs tested = 100
Probability that sample mean is less than 295 =?
Using Central Limit Theorem

From table of normal distribution:
