(a) To find: The given probability P ( x ≥ 25 ⋅ 0 )

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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 7.2, Problem 7.9E

To determine

(a)

To find:

The given probability $P(x≥25⋅0)$

To determine

(b)

To find:

The given probability $P(20⋅0≤x≤30⋅0)$

To determine

(c)

To find:

The given probability $P(x≤30)$

To determine

(d)

To find:

The given probability $P(x=26⋅2)$

To determine

(e)

To find:

The given probability $P(15⋅0≤x≤25⋅0)$

To determine

(f)

To find:

The given probability $P(x≥15)$

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Could you please answer this question using excel. For 1a) I got 84.75 and for part 1b) I got 85.33 and was wondering if you could check if my answers were correct. Thanks

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Using the accompanying Accounting Professionals data to answer the following questions. a. Find and interpret a 90% confidence interval for the mean years of service. b. Find and interpret a 90% confidence interval for the proportion of employees who have a graduate degree. view the Accounting Professionals data. Employee Years of Service Graduate Degree?1 26 Y2 8 N3 10 N4 6 N5 23 N6 5 N7 8 Y8 5 N9 26 N10 14 Y11 10 N12 8 Y13 7 Y14 27 N15 16 Y16 17 N17 21 N18 9 Y19 9 N20 9 N Question content area bottom Part 1 a. A 90% confidence interval for the mean years of service is (Use ascending order. Round to two decimal places as needed.)

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 7.2, Problem 7.9E

To determine

(a)

To find:

The given probability $P(x≥25⋅0)$

To determine

(b)

To find:

The given probability $P(20⋅0≤x≤30⋅0)$

To determine

(c)

To find:

The given probability $P(x≤30)$

To determine

(d)

To find:

The given probability $P(x=26⋅2)$

To determine

(e)

To find:

The given probability $P(15⋅0≤x≤25⋅0)$

To determine

(f)

To find:

The given probability $P(x≥15)$

Expert Solution & Answer

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Check out a sample textbook solution

See solution

Answer 3

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 7.2, Problem 7.9E

To determine

(a)

To find:

The given probability $P(x≥25⋅0)$

To determine

(b)

To find:

The given probability $P(20⋅0≤x≤30⋅0)$

To determine

(c)

To find:

The given probability $P(x≤30)$

To determine

(d)

To find:

The given probability $P(x=26⋅2)$

To determine

(e)

To find:

The given probability $P(15⋅0≤x≤25⋅0)$

To determine

(f)

To find:

The given probability $P(x≥15)$

Expert Solution & Answer

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Check out a sample textbook solution

See solution

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 7.2, Problem 7.9E

To determine

(a)

To find:

The given probability $P(x≥25⋅0)$

To determine

(b)

To find:

The given probability $P(20⋅0≤x≤30⋅0)$

To determine

(c)

To find:

The given probability $P(x≤30)$

To determine

(d)

To find:

The given probability $P(x=26⋅2)$

To determine

(e)

To find:

The given probability $P(15⋅0≤x≤25⋅0)$

To determine

(f)

To find:

The given probability $P(x≥15)$

Expert Solution & Answer

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Check out a sample textbook solution

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Answer 5

Chapter 7.2, Problem 7.9E

To determine

(a)

To find:

The given probability $P(x≥25⋅0)$

To determine

(b)

To find:

The given probability $P(20⋅0≤x≤30⋅0)$

To determine

(c)

To find:

The given probability $P(x≤30)$

To determine

(d)

To find:

The given probability $P(x=26⋅2)$

To determine

(e)

To find:

The given probability $P(15⋅0≤x≤25⋅0)$

To determine

(f)

To find:

The given probability $P(x≥15)$

Answer 6

Chapter 7.2, Problem 7.9E

To determine

(a)

To find:

The given probability $P(x≥25⋅0)$

Answer 7

Chapter 7.2, Problem 7.9E

To determine

(a)

To find:

The given probability $P(x≥25⋅0)$

Answer 8

To determine

(b)

To find:

The given probability $P(20⋅0≤x≤30⋅0)$

Answer 9

To determine

(b)

To find:

The given probability $P(20⋅0≤x≤30⋅0)$

Answer 10

To determine

(c)

To find:

The given probability $P(x≤30)$

Answer 11

To determine

(c)

To find:

The given probability $P(x≤30)$

Answer 12

To determine

(d)

To find:

The given probability $P(x=26⋅2)$

Answer 13

To determine

(d)

To find:

The given probability $P(x=26⋅2)$

Answer 14

To determine

(e)

To find:

The given probability $P(15⋅0≤x≤25⋅0)$

Answer 15

To determine

(e)

To find:

The given probability $P(15⋅0≤x≤25⋅0)$

Answer 16

To determine

(f)

To find:

The given probability $P(x≥15)$

Answer 17

To determine

(f)

To find:

The given probability $P(x≥15)$

Answer 18

Expert Solution & Answer

Answer 19

Expert Solution & Answer

Answer 20

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Answer 21

Ch. 7.1 - What is the difference between a continuous...Ch. 7.1 - What is a probability density function and how is...Ch. 7.1 - Why is the total area beneath a probability...Ch. 7.1 - Prob. 7.4E Ch. 7.2 - It has been stated that the nomal distribution is...Ch. 7.2 - Prob. 7.6E Ch. 7.2 - Prob. 7.7E Ch. 7.2 - Prob. 7.8E Ch. 7.2 - Prob. 7.9E Ch. 7.2 - The Canada Urban Transit Association has reported...

(a) To find: The given probability P ( x ≥ 25 ⋅ 0 )

Solution Summary: The author explains that normal distributions are symmetrical about the mean, so the required answer is P(xge 25cdot 0)

Concept explainers

Videos

(a)

To find:

The given probability $P(x≥25⋅0)$

(b)

To find:

The given probability $P(20⋅0≤x≤30⋅0)$

(c)

To find:

The given probability $P(x≤30)$

(d)

To find:

The given probability $P(x=26⋅2)$

(e)

To find:

The given probability $P(15⋅0≤x≤25⋅0)$

(f)

To find:

The given probability $P(x≥15)$

Want to see the full answer?

Chapter 7 Solutions

(a) To find: The given probability P ( x ≥ 25 ⋅ 0 )

Solution Summary: The author explains that normal distributions are symmetrical about the mean, so the required answer is P(xge 25cdot 0)

Concept explainers

Videos

(a) To find: The given probability P(x≥25⋅0)<m:math><m:mrow><m:mtext>P</m:mtext><m:mrow><m:mo>(</m:mo><m:mrow><m:mi>x</m:mi><m:mo>≥</m:mo><m:mn>25</m:mn><m:mo>⋅</m:mo><m:mn>0</m:mn></m:mrow><m:mo>)</m:mo></m:mrow></m:mrow></m:math>

(c) To find: The given probability P(x≤30) <m:math><m:mrow><m:mtext>P</m:mtext><m:mrow><m:mo>(</m:mo><m:mrow><m:mi>x</m:mi><m:mo>≤</m:mo><m:mn>30</m:mn></m:mrow><m:mo>)</m:mo></m:mrow><m:mtext> </m:mtext></m:mrow></m:math>

(d) To find: The given probability P(x=26⋅2) <m:math><m:mrow><m:mtext>P</m:mtext><m:mrow><m:mo>(</m:mo><m:mrow><m:mi>x</m:mi><m:mo>=</m:mo><m:mn>26</m:mn><m:mo>⋅</m:mo><m:mn>2</m:mn></m:mrow><m:mo>)</m:mo></m:mrow><m:mtext> </m:mtext></m:mrow></m:math>

(f) To find: The given probability P(x≥15)<m:math><m:mrow><m:mtext>P</m:mtext><m:mrow><m:mo>(</m:mo><m:mrow><m:mi>x</m:mi><m:mo>≥</m:mo><m:mn>15</m:mn></m:mrow><m:mo>)</m:mo></m:mrow></m:mrow></m:math>

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Chapter 7 Solutions

(a)

To find:

The given probability $P(x≥25⋅0)$

(c)

To find:

The given probability $P(x≤30)$

(d)

To find:

The given probability $P(x=26⋅2)$

(f)

To find:

The given probability $P(x≥15)$