CCSS.Math.Content.HSS.IC.A.1

The null hypothesis always contains a(an):

• < or >

• =

• >

• = or >

• ≠

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CCSS.Math.Content.HSS.IC.A.1

Elise, a supermarket employee, approached 50 random customers and asked whether they would be willing to discuss what they like most about the store. She interviewed the 22 who said yes. Is this sample of the supermarket's customers likely to be biased?

• yes

• no

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CCSS.Math.Content.HSS.IC.A.1

CCSS.Math.Content.7.SP.A.1

Marianne wanted to know students' opinion on the new schedule at school. She places students' names in a container and randomly picks out 20 names. 

• Convenience Sampling
• Systematic Random Sampling
• Simple Random Sampling
• Volunteer response

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CCSS.Math.Content.HSS.IC.A.1

A poll is taken from 100 seniors in a high school where the senior class has 575 students. This is an example of a  ______________.

• Sample
• Population

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CCSS.Math.Content.HSS.IC.A.1

A ___ is a small portion of the population used to gather data from.

• Systematic Sampling Method
• Sample
• Population
• Bias

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CCSS.Math.Content.HSS.IC.A.1

CCSS.Math.Content.HSS.IC.B.4

Identify the confidence interval used in the figure below if each shaded area is equal to 0.05.

• 90%
• 95%
• 98%
• 99%

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CCSS.Math.Content.HSS.IC.A.1

CCSS.Math.Content.HSS.IC.B.4

CCSS.Math.Content.HSS.ID.A.4

When interpreting the confidence interval, make sure that you are describing the 

• statistic
• parameter

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CCSS.Math.Content.HSS.IC.A.1

Construct a 90% confidence interval of a random sample size of 19 cows with a mean of 155.526 and a standard deviation of 19.993. 

• (146.54, 164.52)
• (147.57, 163.48)
• (147.59, 163.46)
• (143.69, 167.36)

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CCSS.Math.Content.HSS.IC.A.1

78% of flights on major airlines arrive on time. A random sample was taken of 100 flights.

Find the probability that more than 70% of the 100 randomly selected flights are on time.

• 0.5077

• 0.0267

• 0.9999

• 0.9733

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CCSS.Math.Content.HSS.IC.A.1

CCSS.Math.Content.HSS.ID.A.4

True or False:

The variance of the sampling distribution is equal to the population variance multiplied by the sample size.

• True

• False

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CCSS.Math.Content.HSS.IC.A.1