Assignment Help-Business Management


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Help-Business Management

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?

IE

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.

 

Round your answers for relative frequencies to three decimal places and your answers for percentages to one decimal place.

 

catagory      Relative Frequency                 Percentage
A
B
C

 

 

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

B?

 

Round your answer to one decimal place.

 

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

IE

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.

 

Round your answers for relative frequencies to three decimal places and your answers for percentages to one decimal place.

 

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?

 

Round your answer to one decimal place.

 

____________________% 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

 

IE

7.

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

IE

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: ___________________

IE

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: _______________

IE

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: ____________________

IE

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