25 Multiple Choice Stats Questions

Question 26.26. In most practical applications, the population standard deviation will not be known but it is estimated from the ________. (Points : 2) population sample test statistic t-distributionQuestion 27.27. To assess the effect of an intervention such as the productivity of an employee before and after a training class, one would conduct a(n) ________. (Points : 2) independent samples t-test ANOVA paired samples t-test F-testQuestion 28.28. Hypothesis testing can result in ________ different outcomes. (Points : 2) three two five fourQuestion 29.29. The alternative hypothesis ________. (Points : 2) describes an existing theory or belief that is accepted as correct in the absence of contradictory data. is based on new information provided by population data. is based on new information provided by sample data. is not deemed to be an important part of inferential statistics.Question 30.30. Use the below information to answer the following five questions.A company wishes to test whether the proportion of female managers is the same as the proportion of male managers. The following table provides data for a sample of employees. Females MalesNumber of managers 18 23Sample size 45 75Which of the following is the test statistic? [Hint: Use PHStat] (Points : 2) 1.96 -1.04 -1.96 1.04Question 31.31. Another term for p-value is ________. (Points : 2) degrees of freedom random effect probability density function observed significance levelQuestion 32.32. Use the below information to answer the following five questions.A company wishes to test whether the proportion of female managers is the same as the proportion of male managers. The following table provides data for a sample of employees. Females MalesNumber of managers 18 23Sample size 45 75Which of the following is the conclusion? (Points : 2) We reject H0 that the proportion of female managers is the same as the proportion of male managers. We should not reject H0 that the proportion of female managers is not the same as the proportion of male managers. We reject H0 that the proportion of female managers is not the same as the proportion of male managers. We should not reject H0 that the proportion of female managers is the same as the proportion of male managers.Question 33.33. In the construction of decision trees, which of the following shapes represents a state of nature node? (Points : 2) square circle diamond triangleQuestion 34.34. In the construction of decision trees, which of the following shapes represents a decision node? (Points : 2) square circle diamond triangleQuestion 35.35. A market research study is being conducted to determine if a product modification will be well received by the public. A total of 1,000 consumers are questioned regarding this product.The table below provides information regarding this sample. PositiveReaction NeutralReaction NegativeReactionMale 240 60 100Female 260 220 120What is the probability that a randomly selected person would be a female who had a positive reaction? (Points : 2) 0.250 0.260 0.455 0.840Question 36.36. The probability that a typical tomato seed will germinate is 60%. A seed company has developed a hybrid tomato that they claim has an 85% probability of germination. If a gardener plants the new hybrid tomato in batches of 12, what is the probability that 10 or more seeds will germinate in a batch? (Points : 2) 0.064 0.083 0.264 0.736Question 37.37. Historical data indicates that only 20% of cable customers are willing to switch companies. If a binomial process is assumed, then in a sample of 20 cable customers, what is the probability that no more than 3 customers would be willing to switch their cable? (Points : 2) 0.85 0.15 0.20 0.411Question 38.38. Lock combinations are made using 3 digits followed by 2 letters. How many different lock combinations can be made if repetition of digits is allowed? (Points : 2) 6 260 6,760 676,000Question 39.39. In 2012 the stock market took some big swings up and down. One thousand investors were asked how often they tracked their investments. The table below shows their responses. What is the probability that an investor tracks the portfolio weekly? How often tracked? ResponseDaily 235Weekly 278Monthly 292Few times a year 136Do not track 59(Points : 2) 0.235 0.278 0.513 0.722Question 40.40. In hypothesis testing, the null and the alternative hypotheses are ________. (Points : 2) not mutually exclusive mutually exclusive always false always trueQuestion 41.41. If we fail to reject the null hypothesis, ________. (Points : 2) we have found evidence to support the alternative hypothesis the null hypothesis is proved to be true we have only failed to find evidence to support the alternative hypothesis the hypothesis test is inconclusiveQuestion 42.42. The probability of a Type I error can be specified by the investigator. The probability of a Type II error is ________. (Points : 2) one minus the probability of Type I error the result of the hypothesis test itself also specified by the investigator not specified by the investigator but computed using the power of the testQuestion 43.43. A major consumer products company wants to measure the type and quantity of laundry detergent used by consumers. After choosing a suburban street at random, employees go door-to-door to every fifth house to ask for permission to view their laundry detergent supply. What sampling method is being used for this sampling plan? (Points : 2) simple random sampling systematic sampling continuous sampling subjective samplingQuestion 44.44. A major consumer products company wants to measure the quality of the packaging of their products on the store shelves. Five large cities are chosen in different parts of the country. What sampling method is being used for this sampling plan? (Points : 2) simple random sampling continuous sampling subjective sampling stratified samplingQuestion 45.45. All of the following are true about the sampling distribution of the mean except ________. (Points : 2) the population standard deviation can be determined when a large sample size is used the standard deviation of this distribution is called the standard error of the mean when larger sample sizes are used for this distribution, the sampling error is less this distribution approaches the normal distribution if the sample size is large enoughQuestion 46.46. Find the standard error of the mean when the population standard deviation is 4.1 and a sample of size 30 is taken. (Points : 2) 7.32 0.08 1.34 0.75Question 47.47. Expected monetary value (EMV) is (Points : 2) the average or expected monetary outcome of a decision if it can be repeated a large number of times. the average or expected value of the decision, if you know what would happen ahead of time. the average or expected value of information if it were completely accurate. the amount you would lose by not picking the best alternative.Question 48.48. Which of the following is true about the expected value of perfect information? (Points : 2) It is the amount you would pay for any sample study. It is calculated as EMV minus EOL. It is calculated as expected value with perfect information minus maximum EMV. It is the amount charged for marketing research.Question 49.49. The expected value of sample information (EVSI) can be used to (Points : 2) establish a maximum amount to spend on additional information. calculate conditional probabilities. establish risk avoidance. provide points on a utility curve.Question 50.50. When conducting a test of hypothesis, if we elect to use alpha (a) of .05 and the results of our analysis indicate that the null hypothesis should be rejected, which of the following is true? (Points : 2) the p-value is greater than .05 the p-value is less than .05 the p-value is greater than +1.96 the p-value is less than -1.96

 

Looking for a Similar Assignment? Let us take care of your classwork while you enjoy your free time! All papers are written from scratch and are 100% Original. Try us today! Use Code FREE15