MAT 136 Week 8 Assignment Help

MAT 136 Week 8 Assignment Help | southern-new-hampshire-university

8-2 Problem Set: 

Q1.

Studies are often done by pharmaceutical companies to determine the effectiveness of a treatment program. Suppose that a new AIDS antibody drug is currently under study. It is given to patients once the AIDS symptoms have revealed themselves. Of interest is the average (mean) length of time in months patients live once they start the treatment. Two researchers each follow a different set of 40 patients with AIDS from the start of treatment until their deaths. The following data (in months) are collected.

Researcher A:

3; 4; 11; 15; 16; 17; 22; 44; 37; 16; 14; 24; 25; 15; 26; 27; 33; 29; 35; 44; 13; 21; 22; 10; 12; 8; 40; 32; 26; 27; 31; 34; 29; 17; 8; 24; 47; 47; 33; 34

Researcher B:

3; 14; 11; 5; 16; 17; 28; 41; 31; 18; 14; 14; 26; 25; 21; 22; 31; 2; 35; 44; 23; 21; 21; 16; 12; 18; 41; 22; 16; 25; 33; 34; 29; 13; 18; 24; 23; 42; 33; 29

Determine what the key terms refer to in the example for Researcher A.

Q2.

Determine what the key terms refer to in the following study. Insurance companies are interested in the mean health costs each year of their clients, so that they can determine the costs of health insurance.

Q3.

a.

Identify the type of data that would be used to describe the number of tickets sold to a concert.

What is an example of the data?

Q4.

Student grades on a chemistry exam were:

77; 78; 73; 81; 88; 53; 79; 82; 84; 91

a.      Select the stem-and-leaf plot of the data.

Q5.

Q6.

Following are the 2010 obesity rates by U.S. states and Washington, DC.

Select the correct bar graph of obesity rates for Texas, Hawaii, South Dakota, Arizona, and Illinois.

Q7.

Construct the frequency polygon for the following:

Select the correct frequency polygon below.

Q8.

Sixty-five randomly selected car salespersons were asked the number of cars they generally sell in one week. Fifteen people answered that they generally sell three cars; eighteen generally sell four cars; fourteen generally sell five cars; eight generally sell six cars; ten generally sell seven cars.

a.      Complete the table.

Enter the exact answers.
 

·        B. What does the frequency column in Table 2.42 sum to?

o   What does the relative frequency column in Table 2.42 sum to?

o   What is the difference between relative frequency and frequency for each data value in Table 2.42?

o   What is the difference between cumulative relative frequency and relative frequency for each data value?

o   The frequency for each data value is the

o   The relative frequency for each data value is the

o   What is the difference between cumulative relative frequency and relative frequency for each data value?

The relative frequency for each data value is the

o   Select the appropriate histogram for the data.

Q9.

Twenty-three randomly selected students were asked the number of movies they watched the previous week. The results are as follows.

a.      Select the correct histogram of the data, where a value is counted in a class interval if it falls on the left boundary, but not if it falls on the right boundary.

b.        Complete the relative and cumulative frequencies for the data in Table 2.67.

Q12.

Consider the following random sample of data:

8, 8, 9, 2, 3, -6, 3, 7, -6, 89

a)  What is the mean of the sample data?

Round your response to at least 2 decimal places.

b)  If the outlier is removed, what is the mean of the remaining sample data?

Round your response to at least 2 decimal places.

Q12.

What is the median of the following list of numbers?

[10, 1, 14, 17, 16, 9, 17, 15, 5]

Q13.

The following data show the lengths of boats moored in a marina. The data are ordered from smallest to largest:

13; 17; 18; 20; 20; 21; 23; 24; 25; 25; 25; 26; 26; 26; 27; 27; 28; 29; 30; 32; 33; 33; 34; 35; 37; 39; 41

a.      Calculate the mean.

Round your answer to two decimal places.
  

Q15.

Two players, Fredo and Karl, on different teams wanted to find out who scored the higher number of points when compared to the other players on his team.

a.      Which player had the higher average points when compared to the other players on his team?

Q16.

Three students were applying to the same graduate school. They came from schools with different grading systems.

How many standard deviations is each student away from hiir school average? If the student GPA is higher than his school average, enter this as a positive number. If the student GPA is lower than his school average, enter this as a negative number.