Quiz  /  Ap classroom unit 4 progress check mcq answers ap lang Class 11...

  • 1. 
    Conduct a test to determine whether or not the population proportion of voters in favor of proposal A is greater than 50%. In a random sample of 200 voters, 140 said that they were in favor of this proposal. Compute the test statistic.

  • z = 7.708
  • z = 5.66
  • p = 7.7 x 10-9
  • None of the above

  • 2. 
    Suppose the P-value for a hypothesis test is 0.0304. Using a = 0.05, what is the appropriate conclusion?

  • a) Reject the null hypothesis
  • b) Reject the alternative hypothesis
  • c) Fail to reject the null hypothesis
  • d) Fail to reject the alternative hypothesis

  • 3. 
    A P-value indicates:

  • the probability that the null hypothesis is true
  • the probability that the alternative hypothesis is true
  • the probability of obtaining the results (or one more extreme) if the null hypothesis is true
  • probability of a Type I error

  • 4. 
    A study found that 11 out of 44 randomly selected adults said they agree that toddlers should not be taken out to eat at a restaurant. It was previously believed that 30% of adults agree that toddlers should not be taken out to eat at a restaurant. I there evidence to suggest an decrease in this rate?  Which of the following is an appropriate set of hypotheses.

  • Ho: p = 0.30      Ha: p > 0.30Ho:\ p\ =\ 0.30\ \ \ \ \ \ Ha:\ p\ >\ 0.30Ho: p = 0.30      Ha: p > 0.30
  • Ho: p = 0.30    Ha:  p < 0.30Ho:\ p\ =\ 0.30\ \ \ \ Ha:\ \ p\ <\ 0.30Ho: p = 0.30    Ha:  p < 0.30
  • Ho: p =0.30    Ha: p ≠ 0.30Ho:\ p\ =0.30\ \ \ \ Ha:\ p\ \ne\ 0.30Ho: p =0.30    Ha: p ​= 0.30

  • 5. 
    In a research report, the term "significant" is used when the null hypothesis is rejected.

  • True
  • False

  • 6. 
    When performing a test about the population proportion, what distribution would you need to use?

  • z
  • t
  • chi-square

  • 7. 
    If no alpha level is given, what alpha level is assumed?

  • 0.01
  • 0.05
  • 0.10
  • 0.25

  • 8. 
    When determining the conclusion of a hypothesis test with alpha = 5%, which of the following is true?

  • If the p-value is less than 5%, then we fail to reject the null hypothesis.
  • If the p-value is less than 5%, then we reject the null hypothesis.
  • If the p-value is more than 5%, the we reject the null hypothesis.
  • We need more information.

  • 9. 
    Which of the following is the FIRST step of a hypothesis test?

  • Check assumptions & conditions
  • Find your test statistic
  • State your conclusion
  • State your null & alternative hypotheses

  • 10. 
    While investigating customer complaints, the customer relations department of Sonic Air found that 15 percent of the flights arrive early and 25 percent arrive on time. Additionally, 65 percent of the flights are overbooked, and 72 percent are late or not overbooked. One Sonic Air flight will be selected at random. What is the probability that the flight selected will be late and not overbooked?

  • 0.21
  • 0.23
  • 0.26
  • 0.38
  • 0.72

  • 11. 
    Given independent events A and B such that P(A)=0.3and P(B)=0.5, which of the following is a correct statement?

  • P(A|B)=0
  • P(B|A)=0.3
  • P(A|B)=0.5
  • P(A∪B)=0.65
  • P(A∪B)=0.80

  • 12. 
    When it is not stated explicitly, the implied alpha level used to determine if a P-value rejects a null hypothesis is;

  • 0.5
  • 0.05
  • 0.025
  • 0.25

  • 13. 
    Item A consumer group is investigating the number of flights at a certain airline that are overbooked. They conducted a simulation to estimate the probability of overbooked flights in the next 5 flights. The results of 1,000 trials are shown in the following histogram.Based on the histogram, what is the probability that at least 4 of the next 5 flights at the airline will be overbooked?

  • 0.114
  • 0.446
  • 0.500
  • 0.886
  • 0.332

  • 14. 
    An original neutral stimulus that, after association with an unconditioned stimulus, comes to trigger a conditioned response is known as a...

  • unconditioned stimulus
  • neutral stimulus
  • conditioned response
  • conditioned stimulus

  • 15. 
    A certain spinner is divided into 6 sectors of equal size, and the spinner is equally likely to land in any sector. Four of the 6 sectors are shaded, and the remaining sectors are not shaded.Which of the following is the best interpretation of the probability that one spin of the spinner will land in a shaded sector?

  • For many spins, the long-run relative frequency with which the spinner will land in a shaded sector is 13\frac{1}{3}31​ .
  • For many spins, the long-run relative frequency with which the spinner will land in a shaded sector is 12\frac{1}{2}21​
  • For many spins, the long-run relative frequency with which the spinner will land in a shaded sector is 23\frac{2}{3}32​
  • For 6 spins, the spinner will land in a shaded sector 4 times.
  • For 6 spins, the spinner will land in a shaded sector 2 times.

  • 16. 
    A Type II error is;

  • The null hypothesis is true, but is rejected.
  • The null hypothesis is false, but is not rejected.

  • 17. 
    Amy has 12 brown golf tees, 8 white golf tees, 10 red golf tees, 6 blue golf tees, and 12 green golf tees in her golf bag. If she selects one of the tees from the bag at random, what is the probability that she selects a tee that is not brown or blue?

  • 38\frac{3}{8}83​
  • 58\frac{5}{8}85​
  • 2132\frac{21}{32}3221​
  • 34\frac{3}{4}43​
  • 78\frac{7}{8}87​

  • 18. 
    A slot machine rewards the player with coins after they try an unpredictable amount of times. This is an example of a..

  • fixed-interval schedule
  • variable-interval schedule
  • fixed-ratio schedule
  • variable-ratio schedule

  • 19. 
    This equation in used to find;

  • The standard deviation of the difference between two proportions.
  • The standard deviation of the difference between two means.
  • The standard deviation of the sum between two proportions.
  • The standard deviation of the sum between two means.

  • 20. 
    Which key researcher contributed to taste aversion through his experiments with rats?

  • BF Skinner
  • Edward Tolman
  • John B Garcia
  • Robert Rescorla

  • 21. 
    Alex has a bad habit of biting his nails. Which of the following would be most helpful?

  • Positive Reinforcement
  • Extinction
  • Elimination
  • Aversion Therapy

  • 22. 
    If you'd conduct a one tailed test, you'd double your P-value. Is this true?

  • Yes, this always applies.
  • Yes, this sometimes applies.
  • No, this never applies.

  • 23. 
    The acronym PHANTOMS is used to describe the process of;

  • Hypothesis testing.
  • Forming a confidence interval.
  • Running through the applied assumptions and conditions.
  • Describing a distribution.

  • 24. 
    The students at a certain high school have an elective period, where each student chooses an elective from among four options. The following table shows the number of students who selected each elective for the 1,500 students at the high school.One student from the school will be selected at random. What is the probability the selected student chose the art elective and the music elective?

  • 000
  • 3851500\frac{385}{1500}1500385​
  • 365750\frac{365}{750}750365​
  • 7501500\frac{750}{1500}1500750​
  • 385750\frac{385}{750}750385​

  • 25. 
    Which of the following types of reinforcement results in slower extinction but also slower learning?

  • continuous reinforcement
  • partial reinforcement
  • positive reinforcement
  • negative reinforcement

  • 26. 
    Which example best describes problem focused coping?

  • Exercising after a hard day at work
  • Writing in a journal to express your feelings
  • Asking for an extension on homework
  • Going out with friends after a family argument

  • 27. 
    At a local elementary school, 35 percent of all students have brown eyes, 45 percent have brown hair, and 60 percent have brown hair or brown eyes. A student will be selected at random from the school. Let E represent the event that the selected person has brown eyes, and let H represent the event that the selected person has brown hair. Are E and H mutually exclusive events?

  • Yes, because P(E∩H)=0
  • Yes, because P(E∩H)=0.2
  • Yes, because P(E∩H)=0.6
  • No, because P(E∩H)=0.2
  • No, because P(E∩H)=0.6

  • 28. 
    The student is very confident in her work and thinks she got a good grade on her presentation. Her perception is of…

  • learned helplessness
  • internal locus of control
  • external locus of control
  • positive reinforcement

  • 29. 
    This equation is used for;

  • A significance test.
  • A one proportion t interval.
  • A one proportion z interval.
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