Questions Answers1.  Which hypothesis-testing procedure would you use in thefollowing situation? Your manager wants to knowwhether there is a significant difference between the average times requiredto complete a particular task for the three levels of technician experience(one year on job, two years on job, three years on job).  ____A. Simple randomB. StratifiedC. JudgmentD. SnowballE. ConvenienceF. ClusterG. Ex post factoH. ANOVAI. Chi-square test J. StabilityK. RegressionL. Extrapolation M. Two-related-samples testN. Two-independent-samples test O. One-sample testP. Intra-raterQ. Systematic2.  Which hypothesis-testing procedure would you use in thefollowing situation? YumYum Candy Company sells a jelly bean mixture. The company claimsthat 30% of the jelly beans are cherry flavored, 60% are lemon, and 10% arepeach. The jelly beans are sold in packages of 100.  Suppose a randomly-selected package ofjelly beans has 50 cherry, 45 lemon, and 5 peach jelly beans. Is thisconsistent with YumYum’s claim?  ____3.  Which hypothesis-testing procedure would you use in thefollowing situation? An auto parts store has a customer satisfaction rating of 88 percent.  Is this store’s rating significantlydifferent from the national average of 94 percent?  ____4.  Which hypothesis-testing procedure would you use in thefollowing situation? A company is testing a new diet pill. They ask a group of 37 people torate their hunger before taking the pill and after taking the pill.  Then they examine the results to see ifthere was a significant improvement in hunger ratings.  ____ 5.  Which sampling method is used in the following example?  A researcher needs to draw a sample ofchildren from an elementary school. She first randomly selects five classes from the school. Then she measuresall students in the selected classes. ____6.  Which sampling method is used in the following example?  A researcher is studying orthopedicsurgeons but can only find five. She asks these surgeons if they know anymore. They give her several further referrals, who in turn provide additionalcontacts. In this way, she is able to contact sufficient surgeons.  ____Multiple ChoiceSelect the best answer and enter it in the blank.EXAMPLE__C_  What color is the sky? A)  brownB)  pinkC)  blueD)  green 7.  ____    Which of the following is a true statement? A)  Although acorrectly designed experiment can strongly suggest a cause-and-effectrelationship, the only way of firmly establishing such a relationship isthrough a complete census. B)  If correctlydesigned, an observational study can establish a cause-and-effectrelationship just as effectively as a correctly designed experiment.  C)  A controlledexperiment is often conducted in order to establish a cause-and-effectrelationship that was first suggested by an observational study.  D)  A simple methodfor overcoming bias in observational studies is to increase the sample size.  E)  In anexperiment, the control group consists of self-selected participants whochoose not to receive a designated treatment. 8.  ____    Which descriptive statistic is usually considered mostappropriate for describing nominal data? A)  Mean.  B)  Mode.  C)  Variance.  D)  Range.  E)  Median.  9.  ____    An internet provider asks a consultant to contact 130residential clients and measure their level of satisfaction with theirinternet service.  The consultantobtains an alphabetized  list of clientnames and starting with the letter A, uses a random number generator to pickfive names from this group.  Theconsultant uses the same selection method for each of the other 25 lettersand combines the 5 × 26 = 130 names into a group of clients to be surveyed. Which of the following statements is true?A)  The selectionmethod makes use of chance.  B)  The selectionmethod results in a single-stage cluster sample.  C)  Each client hasan equal probability of being included in the survey.  D)  The selectionmethod introduces bias through sampling error.  E)  For a samplethis size, it is best to let the researcher hand pick a representative set ofclients.