แผ่นงานNormal Distribution
คำถามทั้งหมด: 20
This data is normally distributed. What percent of the data is in the shaded region?
50%
68%
95%
99.7%
This data is normally distributed. What percent of the data is in the shaded regions?
5%
95%
2.5%
50%
This data is normally distributed. What percent of the data is in the shaded region?
68%
32%
16%
50%
If I tell you that you scored at the 55th percentile on your final exam, you would know:
55% of the class scored the same or worse than you did
You earned a 55% on the exam
You failed the exam
45% of the class scored worse than you did
What percentage of data falls within 1 standard deviation?
25%
68%
95%
99.7%
How much of the data falls within 3 standard deviations?
25%
68%
95%
99.7%
If this is the graph of data normally distributed with a mean of 30 and a standard deviation of 5, what label (number) is written at the blue circle?
40
35
45
50
If this is the graph of data normally distributed with a mean of 30 and a standard deviation of 5, what label (number) is written at the blue circle?
20
15
40
30
35 is
mean
variance
standard deviation
range
What's the standard deviation?
150
60
240
30
Given a mean of 75 and a standard deviation of 7, what percentage of scores are above 82?
34%
16%
81.5%
2.5%
Given a mean of 75 and a standard deviation of 7, what percentage of scores are between 54 and 96?
13.5%
99.7%
95%
2.15%
If the average annual precipitation in Phoenix is 29 with a standard deviation of 3, what is the "normal" range of precipitation (68%)?
26-32
3-29
26-29
39-32
The ages of golfers are normally distributed, with a mean of 38 and a standard deviation of 4.
Find the percentage of golfers that are between 30 and 46 years old.
68%
94%
95%
99.7%
About what percent of the products last between 12 and 15 days?
A line up for tickets to a local concert had an average (mean) waiting time of 20 minutes with a standard deviation of 4 minutes. If 2000 ticket buyers were in line, how many of them would expect to wait for less than 16 minutes?
1750
30
320
100
แป้นคำตอบNormal Distribution
คำถามทั้งหมด: 20
95%
5%
16%
55% of the class scored the same or worse than you did
68%
99.7%
40
15
mean
30
16%
99.7%
26-32
95%
320
