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STATS 302 Practice Final Exam Questions and Answers

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STATS 302 Practice Final Exam Questions and Answers Anna Grace is conducting a survey of Texas A&M students. She asks them their age, gender, current GPA, major, current number of credit hours, high school GPAs, and number of days of class they missed in the last month. What kind of variable is ...

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  • November 4, 2024
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Copyright © KAYLIN 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED FIRST PUBLISH NOVEMBER, 2024




STATS 302 Practice Final Exam Questions and Answers



Anna Grace is conducting a survey of Texas A&M students. She asks them their age, gender, current GPA,

major, current number of credit hours, high school GPAs, and number of days of class they missed in the

last month. What kind of variable is major? - ANSWER✔✔-qualitative


Taylor Swift wants to know the proportion of her fans who listened to her new single ME! within the first

hour of it being released. In order to estimate this, she takes a sample of 150 of her fans and asks them if

they listened to the song in this time period. Of the 150 fans, 135 of them (90%) responded that they did

listen to the song during this time period. What is the parameter and what is its value? - ANSWER✔✔-

The parameter is the proportion of all Taylor Swift fans who listened to ME! within the first hour after it

was released, which is unknown.


In which of the following study designs would you generally know the value of the parameter? -

ANSWER✔✔-Census


A researcher wants to determine if a new flu vaccine protects from the flu better than the current

vaccine. He has 100 subjects for his study. He believes that sex will affect how well the vaccine works, so

within these 100 subjects, splits them up into males (48 subjects) and females (52 subjects). Within each

sex, he randomly assigns half of the subjects to get the new flu vaccine and the other half to get the

current flu vaccine. What type of study design is this? - ANSWER✔✔-Experimental Study: Block Design


Consider the following set of data: 2, 3, 4. What is the standard deviation? - ANSWER✔✔-1.00


The boxplot below shows the distribution of heights of 16 undergraduate statistics students. Using the

boxplot, approximately how many students are 64 inches or taller? - ANSWER✔✔-12


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, Copyright © KAYLIN 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED FIRST PUBLISH NOVEMBER, 2024


The average on a history exam (out of 100 points) was 85, with a standard deviation of 15. What shape

would you expect the distribution of grades to take? - ANSWER✔✔-Left Skewed


Anna teaches a small class of 14 students. She recently gave them an exam (out of 100 points). The

scores on the exam were: 0, 15, 58, 75, 78, 82, 84, 84, 89, 91, 94, 98, 100, and 100. How many of the

scores are potential outliers? - ANSWER✔✔-2


One common disease among pediatric patients is streptoccal pharyngitis (strep throat). If a pediatric

patient comes into the pediatricians feeling ill, there is a 26% chance that they have strep throat. A

doctor sees 7 pediatric patients on a particular day (assume these patients are independent). Consider

the random variable as a binomial random variable such that X = number of pediatric patients with strep

throat. What is the chance that at least one of them has strep throat? - ANSWER✔✔-0.878


Heights of adult American women are normally distributed with a mean of 65 inches and a standard

deviation of 3.5 inches. Taylor is a 28 year old American woman. Her doctor tells her that her height is

below average but less than one standard deviation away from the mean. Which of the following could

potentially be the z-score of her height> - ANSWER✔✔-None of the above


A health study reported that, in one country, systolic blood pressure readings have a mean of 122 and a

standard deviation of 15. A reading above 140 is considered to be high blood pressure. If the systolic

blood pressure in that country has a normal distribution, using the z-table, what proportion of the

population suffers from high blood pressure? - ANSWER✔✔-0.1151


An index that is a standardized measure used in observing infants over time is approximately normal

with a mean of 96 and a standard deviation of 10. What index score is less than 33% of the population

index scores? - ANSWER✔✔-100.40




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