Question 1

The weight of a bag of corn chips is normally distributed with a mean of 22 ounces and a standard deviation of ½ ounces. What is the probability that a bag of corn chips weighs more than 23 ounces? _____

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Question 2

In a standard normal distribution, µ = ______ and $\sigma$ = _____.

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Question 3

To apply the normal approximation to a binomial distribution, mean and variance are ________

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Question 4

About what percent of the area under the normal curve is within plus two and minus two standard deviation of the mean? _______

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Question 5

What proportion of the area under a normal curve is to the right of a z-score of zero? _________

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Question 6

A sample of 500 evening students revealed that their annual incomes were normally distributed with a mean income of $30,000 and a standard deviation of $3,000. How many students earned between $27,000 and $33,000? ______

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Question 7

The mean of a normal probability distribution is 60 and the standard deviation is 5. What percent of observations are between 50 and 70? ________%

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Question 8

For normally distributed random variables, what rule makes probability statements based on specific values of the standard deviation? ___________

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Question 9

The standardized z value measures distance between an outcome, X, and the mean by the number of _____________________.

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Question 10

In a uniform distribution, with a minimum, a, and maximum, b, the probability that the random variable, x, is between a and b is ___________.

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Question 11

What proportion of the area under a normal curve is to the left of z = 0.50? ________

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Question 12

What is the formula to convert any normal distribution to the standard normal distribution? _______________________

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Question 13

What proportion of the area under a normal curve is to the right of z = -1.21? ________

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Question 14

In the exponential distribution, the mean and standard deviation are equal to ______________

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Question 15

What happens to the shape of a binomial distribution as the number of trials increases? ________________

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Question 16

In a uniform distribution, with a minimum, a, and maximum, b, the probability that the random variable, x, is between a and (b - a)/2 is ___________.

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Question 17

What proportion of the area under a normal curve is to the right of z = -1.71? ________

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Question 18

What proportion of the area under a normal curve is to the left of z = 1.40? ________

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Question 19

In a uniform distribution, probabilities are represented by ___________.

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Question 20

To apply the normal approximation to a binomial distribution what must be true? ________________

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Quiz 7: Continuous Probability Distributions

The weight of a bag of corn chips is normally distributed with a mean of 22 ounces and a standard deviation of ½ ounces. What is the probability that a bag of corn chips weighs more than 23 ounces? _____

In a standard normal distribution, µ = __ and $\sigma$ = _.

To apply the normal approximation to a binomial distribution, mean and variance are ________

About what percent of the area under the normal curve is within plus two and minus two standard deviation of the mean? _______

What proportion of the area under a normal curve is to the right of a z-score of zero? _________

A sample of 500 evening students revealed that their annual incomes were normally distributed with a mean income of $30,000 and a standard deviation of $3,000. How many students earned between $27,000 and $33,000? ______

The mean of a normal probability distribution is 60 and the standard deviation is 5. What percent of observations are between 50 and 70? ________%

For normally distributed random variables, what rule makes probability statements based on specific values of the standard deviation? ___________

The standardized z value measures distance between an outcome, X, and the mean by the number of _____________________.

In a uniform distribution, with a minimum, a, and maximum, b, the probability that the random variable, x, is between a and b is ___________.

What proportion of the area under a normal curve is to the left of z = 0.50? ________

What is the formula to convert any normal distribution to the standard normal distribution? _______________________

What proportion of the area under a normal curve is to the right of z = -1.21? ________

In the exponential distribution, the mean and standard deviation are equal to ______________

What happens to the shape of a binomial distribution as the number of trials increases? ________________

In a uniform distribution, with a minimum, a, and maximum, b, the probability that the random variable, x, is between a and (b - a)/2 is ___________.

What proportion of the area under a normal curve is to the right of z = -1.71? ________

What proportion of the area under a normal curve is to the left of z = 1.40? ________

In a uniform distribution, probabilities are represented by ___________.

To apply the normal approximation to a binomial distribution what must be true? ________________

Quiz 7: Continuous Probability Distributions

The weight of a bag of corn chips is normally distributed with a mean of 22 ounces and a standard deviation of ½ ounces. What is the probability that a bag of corn chips weighs more than 23 ounces? _____

In a standard normal distribution, µ = ______ and σ\sigmaσ = _____.

To apply the normal approximation to a binomial distribution, mean and variance are ________

About what percent of the area under the normal curve is within plus two and minus two standard deviation of the mean? _______

What proportion of the area under a normal curve is to the right of a z-score of zero? _________

A sample of 500 evening students revealed that their annual incomes were normally distributed with a mean income of $30,000 and a standard deviation of $3,000. How many students earned between $27,000 and $33,000? ______

The mean of a normal probability distribution is 60 and the standard deviation is 5. What percent of observations are between 50 and 70? ________%

For normally distributed random variables, what rule makes probability statements based on specific values of the standard deviation? ___________

The standardized z value measures distance between an outcome, X, and the mean by the number of _____________________.

In a uniform distribution, with a minimum, a, and maximum, b, the probability that the random variable, x, is between a and b is ___________.

What proportion of the area under a normal curve is to the left of z = 0.50? ________

What is the formula to convert any normal distribution to the standard normal distribution? _______________________

What proportion of the area under a normal curve is to the right of z = -1.21? ________

In the exponential distribution, the mean and standard deviation are equal to ______________

What happens to the shape of a binomial distribution as the number of trials increases? ________________

In a uniform distribution, with a minimum, a, and maximum, b, the probability that the random variable, x, is between a and (b - a)/2 is ___________.

What proportion of the area under a normal curve is to the right of z = -1.71? ________

What proportion of the area under a normal curve is to the left of z = 1.40? ________

In a uniform distribution, probabilities are represented by ___________.

To apply the normal approximation to a binomial distribution what must be true? ________________

In a standard normal distribution, µ = __ and $\sigma$ = _.