# Statistics Help Now

kdog40
 Part 1 of 9 -

##### Question 1 of 25
1.0 Points
Which of the following statements is true regarding the data set 10, 10, 10, 10, and 10?
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 Part 2 of 9 -

##### Question 2 of 25
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If one tosses a coin enough times, the proportion of "heads" will approach 0.5. This is an example of:
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##### Question 3 of 25
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If A and B are any two events with P(A) = .8 and P(B|A) = .4, then the joint probability of A and B is
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 Part 3 of 9 -

##### Question 4 of 25
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The following data were obtained from a survey of college students. The variable X represents the number of non-assigned books read during the past six months.
 x 0 1 2 3 4 5 P (X=x) 0.2 0.25 0.2 0.15 0.1 0.1

Find P( X  5)
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##### Question 5 of 25
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Which of following statements are true regarding the probability distribution of a random variable X?
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##### Question 6 of 25
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According to an Internet posting, 80% of adults enjoy drinking beer. A group of 7 adults is chosen randomly. The probability that no more than 3 of them enjoy drinking beer is:
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 Part 4 of 9 -

##### Question 7 of 25
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Given that the random variable X is normally distributed with a mean of 80 and a standard deviation of 10, P(85 < X < 90) is
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##### Question 8 of 25
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The continuous distribution characterized by a symmetric, bell-shaped curve is the:
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##### Question 9 of 25
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The standard normal distribution has a mean of ___ and standard deviation of ___, respectively.
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##### Question 10 of 25
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If the value of the standard normal random variable Z is positive, then the original score is where in relationship to the mean?
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##### Question 11 of 25
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Find the probability, P(Z < 0.17), using the standard normal distribution.
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##### Question 12 of 25
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The standard deviation of  is usually called the
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 Part 5 of 9 -

##### Question 13 of 25
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Accepted characters: numbers, decimal point markers (period or comma), sign indicators (-), spaces (e.g., as thousands separator, 5 000), "E" or "e" (used in scientific notation). NOTE: For scientific notation, a period MUST be used as the decimal point marker.
Complex numbers should be in the form (a + bi) where "a" and "b" need to have explicitly stated values.
For example: {1+1i} is valid whereas {1+i} is not. {0+9i} is valid whereas {9i} is not.

The following data represent the number of children in a sample of 10 families from Chicago: 4, 2, 1, 1, 5, 3, 0, 1, 0, and 2.

Compute the median number of children. Place your answer, rounded to two decimal places, in the blank. For example, 3.45 would be a legitimate entry.
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##### Question 25 of 25
1.0 Points
Using the standard normal curve, the Z- score representing the 10th percentile is 1.28.
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