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- 1. Multiple ChoiceThe appraised values of houses in a city have a mean of $125,000 with a standard deviation of $23,000. Because of a new teachers' contract, the school district needs an extra 10% in funds compared to the previous year. To raise the additional money, the city instructs the assessment office to raise all appraised house values by $5,000. What will be the new standard deviation of the appraised values of houses in the city?$23,000$25,300$28,000$30,300
- 2. Multiple ChoiceDefine a new measurement as the difference between the 60th and 40th percentile scores in a population. This measurement will give information concerningcentral tendencyvariabilitysymmetryskewness
- 3. Multiple ChoiceWhich of the following can affect the value of the correlation, r?A chance in the measurement units.A change in which variable is called x and which is called y.Adding the same constant to all values of the x-variable.None of the above can affect the r-value.
- 4. Multiple ChoiceWhich among the following would result in the narrowest confidence interval?Small sample size and 95% confidenceSmall sample size and 99% confidenceLarge sample size and 95% confidenceLarge sample size and 99% confidence
- 5. Multiple ChoiceThe American Medical Association (AMA) wishes to determine the percentage of obstetricians who are considering leaving the profession because of the rapidly increasing number of lawsuits against obstetricians. How large a sample should be taken to find the answer within 3% at the 95% confidence level?335345241068
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