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STATS FINAL EXAM QUESTIONS AND 100% CORRECT ANSWERS 2024
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STATS FINAL EXAM QUESTIONS AND 100% CORRECT ANSWERS 2024
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STATS FINAL EXAM QUESTIONS AND100% CORRECT ANSWERS 2024
Which of the following correctly describes the relationship between a parameter and a statistic? -
FANSWERFA statistic is calculated from sample data and is generally used to estimate a parameter.
A study was done to determine the average commute time per week to and from class for an SPC
student attending a lecture class. For convenience, a sample of 60 students was taken by randomly
selecting a lecture class on the Gibbs campus (30 students), and also a lecture class on the Clearwater
campus (30 students). The students selected for the sample were then asked where they were
commuting from, when, and how often. The information was then entered into a GPS system in order to
obtain estimated commuting times. -FANSWERFAll SPC students who attend lecture classes.
Which branch of statistics deals with the organization and summarization of collected information? -
FANSWERFDescriptive
From past figures, it is predicted that 19% of the registered voters in California will vote in the June
primary. -FANSWERFInferential
The cost of a Statistics textbook. -FANSWERFquantitative
eye color -FANSWERFqualitative
A study where a drug was given to 23 patients and a placebo to another group of 23 patients to
determine if the drug has an effect on a patient's illness. -FANSWERFExperiment
A study where a political pollster wishes to determine if his candidate is leading in the polls for an
upcoming election. -FANSWERFobservational study
50 sophomores, 30 juniors and 20 seniors are randomly selected from 500 sophomores, 300 juniors and
200 seniors at a certain high school. -FANSWERFstratified
Every fifth person boarding a plane is searched thoroughly. -FANSWERFsystematic
,At a local community college, five statistics classes are randomly selected out of 20 and all of the
students from each class are interviewed. -FANSWERFcluster
A community college student interviews everyone in their statistics class to determine the percentage of
students that own a car. -FANSWERFconvenience
A fitness instructor measured the heart rates of the participants in a yoga class at the conclusion of the
class. The data is summarized in the histogram below. There were fifteen people who participated in the
class between the ages of 25 and 45.
What percent of the participants had a heart rate between 130 and 150 bpm? -FANSWERF47%
The median LSAT score reported by a Law School is 170. Which of the following is not correct? -
FANSWERFhalf of the students have an LSAT score of 170
The ages of a group of patients being treated at one hospital for osteoporosis are summarized in the
frequency histogram below. -FANSWERFSkew left, the median would provide a better measure of center.
Lengths of pregnancies of humans are normally distributed with a mean of 265 days and a standard
deviation of 10 days. Use the Empirical Rule to determine the percentage of women whose pregnancies
are between 255 and 275 days. -FANSWERF68%
A high school student took two college entrance exams and scored 1120 on the SAT and 27 on the ACT.
Suppose that SAT scores have a mean of 950 and a standard deviation of 140 while the ACT scores have a
mean of 22 and a standard deviation of 4. Assuming the performance on both tests follows a normal
distribution, determine which test the student did better on. -FANSWERFACT
What is the set of all possible outcomes of a probability experiment? -FANSWERFsample space
If the computed probability of an event occurring is 0.01. Which of the following statements is correct? -
FANSWERFWe would expect the event to occur about one percent of the time
A probability cannot be negative or greater than 1. -FANSWERFtrue
, If the probability of an event is 1, the event is impossible. -FANSWERFfalse
The probability of an individual having Type O blood is 0.45. What is the probability of having a blood
type other than O? -FANSWERF.55
Two events are dependent if when one occurs: -FANSWERFThe probability of the other occurring is
changed.
Two events are independent if when one occurs: -FANSWERFThe probability of the other occurring is
unchanged
The Multiplication Rule says that P(A and B) = P(A) × P(B). What must be true about events A and B for
this rule to apply? -FANSWERFThe events must be independent.
An event A will occur with probability 0.4. An event B will occur with probability 0.6. The probability that
both A and B will occur is 0.20. We may conclude -FANSWERFthat events A and B are dependent.
A multiple-choice test has five questions with each question having fiveFANSWERFchoices. Only one of
the choices is correct. You randomly guess theFANSWERFto each question. What is the probability that
youFANSWERFthe first two questions correctly? -FANSWERF.04
Applicants for a job first submit a written application. Based on the written applications, 40% of the
applicants are invited for a first interview. Of those that have a first interview, 58% are rejected after the
interview. What is the probability that a randomly selected applicant receives a first interview and is
rejected after the interview? -FANSWERF.232
The following table categorizes the students in a first-grade class by age and gender.
What proportion of the students are female and less than 6 years old? -FANSWERF2/20
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