Algebra 2 ~ Statistics and Probability

At Donald's Donuts the number of donut holes in a bag can vary. Help Donald find the mode.
12, 10, 10, 10, 13, 12, 11, 13, 10

• 13
• 12
• 11
• 10

What is the standard deviation for the data given:
{12, 13, 29, 18, 61, 35, 21}

• 293.67
• 15.87
• 17.14
• 41.98

Given a normal distribution, what percentage of all values fall within 1 standard deviation from the mean?

• 34%
• 68%
• 95%
• 13.5%

Tags

CCSS.HSS.ID.A.4

Given a normal distribution, with a mean of 65 an a standard deviation of 8, what percentage of values are within the interval [41,73]?

• 83.85%
• 97.35%
• 84%
• 95%

Tags

CCSS.HSS.ID.A.4

Suppose a data set is distributed normally. The mean is 125 and standard deviation is 7. What data value is 2 standard deviations above the mean?

• 111
• 153
• 139
• 118

479 freshman at Woodrow Wilson took an Algebra test. The scores were distributed normally with a mean of 68 and a standard deviation of 6. What percentage of scores are between 56 and 74?

• 84%
• 81.5%
• 95%
• 99.7%

479 freshman at Woodrow Wilson took an Algebra test. The scores were distributed normally with a mean of 68 and a standard deviation of 6. How many students scored between 62 and 86?

• 325
• 390
• 401
• 455

Suppose that a certain insect has a mean lifespan of 5.6 days with a standard deviation of 1.2 days. Assume the lifespan is normally distributed. Calculate the percentage of insects with a lifespan between 3.2 and 8 days.

• 34%
• 95%
• 84%
• 68%

What is the shape of this graph?

• Symmetric
• Skewed Right
• Skewed Left

The distribution of heights of adult American men is approximately Normal with mean 69 inches and standard deviation 2.5 inches. Between what heights do the middle 95% of men fall? 

• 66.5-71.5
• 64-74
• 61.5-76.5
• 65-73