Answer:
36girls
Step-by-step explanation:
3/1*12=36. To check 36/12=3/1=3:1
The answer is -.2.5 hope that help
Hello! So we are talking about $82.50 earned for 7 ½ hours of work. 7 ½ is equivalent to 7.5. To find the rate of pay, all you have to do is divde the amount earned by the number of hours worked. 82.50/7.5 is 11. Let's check it by multiplying to make sure it works. 11 * 7.5 is 82.5. 82.50 = 82.5. There. Your rate of pay is $11 per hour.
Answer:
the sample standard deviation
Step-by-step explanation:
The statistic that would enable Dan to estimate the probability that any single class will last somewhere between 47 and 53 minutes is the sample standard deviation. If we have the mean and the standard deviation and we know that the lenghts of the classes form a normal curve, we can compute probabilities either with the empirical rule or using a table of probabilities from a book. The normal distribution is completely determined with the mean and the standard deviation.
Answer:The required interval is (0.196, 0.030).
Step-by-step explanation:
Since we have given that
n = 432
x = 108
So, 
at 99% level of confidence, z = 2.576
So, Margin of error would be
So, margin of error = 0.0536
Now, confidence interval would be
Hence, the required interval is (0.196, 0.030).
