107_7.3_notes_quiz

• 1.118

• 1.000

• 0.500

• 2.000

When a tetrahedral die is tossed three times, the sequence of numbers observed can be thought of as a sample of size ____.

• A) 2

• B) 3

• C) 4

• D) 5

Which of the following is NOT a possible sample of size 3 from the population {1, 2, 3, 4}?

• {1, 1, 1}

• {2, 3, 4}

• {4, 4, 4}

• {1, 2, 5}

The mean of the sample {1, 2, 3} is ____.

• A) 2.0

• B) 2.5

• C) 3.0

• D) 1.5

The mean number of hours of TV watched by the sampled students is ______.

• 8.5

• 9.5

• 10.5

• 11.5

Fill in the blank: The probability that the sample mean is 1.33 is ______.

• 0.016

• 0.047

• 0.156

• 0.188

Fill in the blank: The probability histogram for the sampling distribution looks a lot like the ______ curve.

• linear

• exponential

• normal

• logarithmic

What does the Central Limit Theorem apply to?

• Only symmetric populations

• Only skewed populations

• All populations

• Only normal populations.

Decide whether it is appropriate to use the normal distribution to find probabilities for a simple random sample of size 45 drawn from a population with mean μ = 15 and standard deviation σ = 3.5.

• Yes

• No

Calculate the area to the right of z = 1.18 for a sample mean of 26 years.

• 0.1190

• 0.8810

• 0.5000