ORDER NOW your custom essay to have it completed successfully on time.Assignment

1.

The following table lists the number of deaths by cause as reported by the Centers for Disease Control and Prevention on February 6, 2015 (Source: http://www.cdc.gov).

 Cause of Death Number of Deaths Heart disease 611,105 Cancer 584,881 Accidents 130,557 Stroke 128,978 Alzheimer’s disease 84,767 Diabetes 75,578 Influenza and Pneumonia 56,979 Suicide 41,149

1. What is the variable for this data set?
2. The cause of death from each disease.
3. The number of deaths from each disease.
4. The cause of death.
5. The number of deaths.

1. How many observations are in this data set?
2. How many elements does this data set contain?

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2.

The following data give the results of a sample survey. The letters A,B,C

represent the three categories.

 A B A C B B A C A C C C A B A C B C B B B C A B C A B B B C

1. Prepare a frequency distribution table.

 catagory Frequency A B C

1. Calculate the relative frequencies and percentages for all categories.

 catagory Relative Frequency Percentage A B C

1. What percentage of the elements in this sample belong to Category

B?

___________________% of the elements in this sample belong to category B.

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the tolerance is +/-2%

1. Draw a bar graph for the frequency distribution.

3.

The accompanying table lists the 2010 median household incomes, rounded to the nearest dollar, for all 50 states and the District of Columbia.

 State 2010 Median Household Income (dollars) State 2010 Median Household Income (dollars) AL 40,976 MT 41,467 AK 58,198 NE 52,728 AZ 47,279 NV 51,525 AR 38,571 NH 66,707 CA 54,459 NJ 63,540 CO 60,442 NM 45,098 CT 66,452 NY 49,826 DE 55,269 NC 43,753 DC 55,528 ND 51,380 FL 44,243 OH 46,093 GA 44,108 OK 43,400 HI 58,507 OR 50,526 ID 47,014 PA 48,460 IL 50,761 RI 51,914 IN 46,322 SC 41,709 IA 49,177 SD 45,669 KS 46,229 TN 38,686 KY 41,236 TX 47,464 LA 39,443 UT 56,787 ME 48,133 VT 55,942 MD 64,025 VA 60,363 MA 61,333 WA 56,253 MI 46,441 WV 42,839 MN 52,554 WI 50,522 MS 37,985 WY 52,359 MO 46,184 Source: U.S. Census Bureau.

1. Construct a frequency distribution table using the following classes.

 Median Household Income Frequency 37,000 to 41,999 _________________ 42,000 to 46,999 _________________ 47,000 to 51,999 _________________ 52,000 to 56,999 _________________ 57,000 to 61,999 _________________ 62,000 to 66,999 _________________

1. Calculate the relative frequency and percentage for each class.

 Median Household Income Relative Frequency Percentage 37,000 to 41,999 ______________ ____________ 42,000 to 46,999 ______________ ____________ 47,000 to 51,999 ______________ ____________ 52,000 to 56,999 ______________ ____________ 57,000 to 61,999 ______________ ____________ 62,000 to 66,999 ______________ ____________

1. Based on the frequency distribution, do the data appear to be symmetric or skewed?

The data appear to be

1. symmetric
2. skewed

1. What percentage of these states had an estimated median household income of \$42,000or more?

____________________% of these states had an estimated median household income of \$42,000 or more.

4.

Which of the following is not a characteristic of the normal distribution?

 A The two tails of the curve extend indefinitely B The total area under the curve is 1.0 C The curve is symmetric about the mean D The value of the mean is always greater than the value of the standard deviation.

5.

The total area under a normal distribution curve to the left of the mean is always:

 A.Greater than.5 B.equal to 1 C.equal to zero D. equal to 0.5

6.

For the standard normal distribution, the mean is:

 A zero and the standard deviation is 1 B 1 and the standard deviation is 1 C 1 and the standard deviation is zero D 0.5 and the standard deviation is 0.5

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7.

For the standard normal distribution, the area between z = 0 and z = 2.38, rounded to four decimal places, is: ___________________

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the tolerance is +/-2%

8.

For the standard normal distribution, the area to the right of z = -1.21, rounded to four decimal places, is: ___________________

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the tolerance is +/-2%

9.

For the standard normal distribution, the area between z = 0.19 and z = 0.92, rounded to four decimal places, is: _______________

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the tolerance is +/-2%

10.

The GMAT scores of all examinees who took that test this year produce a distribution that is approximately normal with a mean of 410 and a standard deviation of 49.

The probability that the score of a randomly selected examinee is between 400 and 480, rounded to four decimal places, is: ___________________

The probability that the score of a randomly selected examinee is less than 370, rounded to four decimal places, is: ___________________

The probability that the score of a randomly selected examinee is more than 530, rounded to four decimal places, is: ____________________

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