The percent of New York’s state high school teachers earn between $70,000 and $75,000.

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Answer 1

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Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

Chapter 7, Problem 20E

(a)

To determine

The percent of New York’s state high school teachers earn between $70,000 and $75,000.

(b)

To determine

The percent of New York’s state high school teachers earn between $75,000 and $90,000.

(c)

To determine

The percent of New York’s state high school teachers earn less than $60,000.

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20 km, because GISS Worksheet 10 Jesse runs a small business selling and delivering mealie meal to the spaza shops. He charges a fixed rate of R80, 00 for delivery and then R15, 50 for each packet of mealle meal he delivers. The table below helps him to calculate what to charge his customers. 10 20 30 40 50 Packets of mealie meal (m) Total costs in Rands 80 235 390 545 700 855 (c) 10.1. Define the following terms: 10.1.1. Independent Variables 10.1.2. Dependent Variables 10.2. 10.3. 10.4. 10.5. Determine the independent and dependent variables. Are the variables in this scenario discrete or continuous values? Explain What shape do you expect the graph to be? Why? Draw a graph on the graph provided to represent the information in the table above. TOTAL COST OF PACKETS OF MEALIE MEAL 900 800 700 600 COST (R) 500 400 300 200 100 0 10 20 30 40 60 NUMBER OF PACKETS OF MEALIE MEAL

Let X be a random variable with support SX = {−3, 0.5, 3, −2.5, 3.5}. Part ofits probability mass function (PMF) is given bypX(−3) = 0.15, pX(−2.5) = 0.3, pX(3) = 0.2, pX(3.5) = 0.15.(a) Find pX(0.5).(b) Find the cumulative distribution function (CDF), FX(x), of X.1(c) Sketch the graph of FX(x).

Answer 2

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Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

Chapter 7, Problem 20E

(a)

To determine

The percent of New York’s state high school teachers earn between $70,000 and $75,000.

(b)

To determine

The percent of New York’s state high school teachers earn between $75,000 and $90,000.

(c)

To determine

The percent of New York’s state high school teachers earn less than $60,000.

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Answer 3

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Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

Chapter 7, Problem 20E

(a)

To determine

The percent of New York’s state high school teachers earn between $70,000 and $75,000.

(b)

To determine

The percent of New York’s state high school teachers earn between $75,000 and $90,000.

(c)

To determine

The percent of New York’s state high school teachers earn less than $60,000.

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Answer 4

Question

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

Chapter 7, Problem 20E

(a)

To determine

The percent of New York’s state high school teachers earn between $70,000 and $75,000.

(b)

To determine

The percent of New York’s state high school teachers earn between $75,000 and $90,000.

(c)

To determine

The percent of New York’s state high school teachers earn less than $60,000.

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Answer 5

Chapter 7, Problem 20E

(a)

To determine

The percent of New York’s state high school teachers earn between $70,000 and $75,000.

(b)

To determine

The percent of New York’s state high school teachers earn between $75,000 and $90,000.

(c)

To determine

The percent of New York’s state high school teachers earn less than $60,000.

Answer 6

Chapter 7, Problem 20E

(a)

To determine

The percent of New York’s state high school teachers earn between $70,000 and $75,000.

Answer 7

Chapter 7, Problem 20E

(a)

To determine

The percent of New York’s state high school teachers earn between $70,000 and $75,000.

Answer 8

(b)

To determine

The percent of New York’s state high school teachers earn between $75,000 and $90,000.

Answer 9

(b)

To determine

The percent of New York’s state high school teachers earn between $75,000 and $90,000.

Answer 10

(c)

To determine

The percent of New York’s state high school teachers earn less than $60,000.

Answer 11

(c)

To determine

The percent of New York’s state high school teachers earn less than $60,000.

Answer 12

Expert Solution & Answer

Answer 13

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Answer 14

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Answer 15

Ch. 7 - Microwave ovens only last so long. The life-time...Ch. 7 - Prob. 1E Ch. 7 - Prob. 2E Ch. 7 - Prob. 3E Ch. 7 - Prob. 4E Ch. 7 - Prob. 5E Ch. 7 - Prob. 6E Ch. 7 - Prob. 2SR Ch. 7 - The distribution of the annual incomes of a group...Ch. 7 - Explain what is meant by this statement: There is...

The percent of New York’s state high school teachers earn between $70,000 and $75,000.

Solution Summary: The author explains how New York's state high school teachers earn between 70,000 and 75,000. The standardization of the random variable is done by using the formula: z=x-mu

The percent of New York’s state high school teachers earn between $70,000 and $75,000.

The percent of New York’s state high school teachers earn between $75,000 and $90,000.

The percent of New York’s state high school teachers earn less than $60,000.

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Chapter 7 Solutions