Answer:
16% of students will complete the exam in less than 60 minutes
Step-by-step explanation:
The Empirical Rule(68-95-99.7) states that, for a normally distributed random variable:
68% of the measures are within 1 standard deviation of the mean.
95% of the measures are within 2 standard deviation of the mean.
99.7% of the measures are within 3 standard deviations of the mean.
In this problem, we have that:
Mean = 70
Standard deviation = 10
What percentage of students will complete the exam in less than 60 minutes
60 = 70-10
So 60 is one standard deviation below the mean
By the Empirical Rule, 68% of the measures are within 1 standard deviation of the mean, that is, from 60 to 80 minutes. The other 100-68 = 32% is outside this interval. Since the normal distribution is symmetric, 16% of those are below 60 and 16% of those are above 80.
16% of students will complete the exam in less than 60 minutes
Answer:
36oz of laundry for $10
Hope This Helps! Have A Nice Day!!
Answer:
between 7 and 8
Step-by-step explanation:
Answer:
<h2>The dimensions of the third blanket are 7.5 feet by 6 feet.</h2><h2>All the blankets are similar.</h2>
Step-by-step explanation:
The size of the first blanket is 2.5 feet by 2 feet.
Shannon wants to enlarge the first blanket by scale factor 2 to make the second blanket.
Hence, the size of the second blanket will be 
feet by 
feet.
Again she enlarged the second blanket by a scale factor 1.5 to make the third blanket.
Hence, the size of the second blanket will be 
feet by 
feet.
Enlargement only changes the size of the blanket, it does not change the shape of the blanket. Hence, all the blankets will be similar.
