For the following questions, indicate the method which you would use to respond

Question

For the following questions, indicate the method which you would use to respond to the question posed. Do not carry out any statistical analysis. A recent survey indicated that 56% of online magazine readers have clicked on an advertisement and linked directly to the advertiser's website. Determine whether there is evidence that more than half of all the readers of online magazines have linked to an advertiser's website. The quality-control manager at a light bulb factory needs to determine whether the mean, life of a large shipment of light bulbs is equal to 375 hours. The copulation standard deviation is 100 hours. A random sample of 64 light bulbs indicates a sample mean life of 350 hours. Is there evidence that the mean, life is different from 375 hours? Data from a sample of twenty 2010 family sedans were collected. Use this data to predict mileage based on the horsepower of the car's engine and the weight of the car. Fifteen volunteers are recruited to participate in an experiment. Their blood pressure is taken before each volunteer is asked to read a particularly upsetting passage from, a book and after each volunteer reads the passage from the book. Determine if there is a difference in the before/after blood pressure. A survey of 1,000 adult internet users found that 670 opposed ads on websites. Suppose that a survey of 1,000 internet users age 12-17 found that 510 opposed ads on websites. Is there evidence of a difference between adult internet users and internet users age 12-17 in the proportion who oppose ads? An important feature of digital cameras is battery life, the number of shots that can be taken before the battery needs to be recharged. Data was collected from 29 subcompact cameras and 16 compact cameras. Is there evidence of a difference in the mean battery life between the two types of digital cameras? A data base contains the number of accidents in the NASCAR Sprint Cup Series from 2001-2009. Use this data to predict the number of accidents in 2010. A hospital conducted a study of the waiting time in its emergency room. The hospital has a main campus and three satellite locations. Management had the business objective of reducing waiting time for emergency room cases that did not require immediate attention. To study this, a random sample of 15 emergency room cases that did not require immediate attention at each location were selected on a particular day and the waiting time was measured. Is there evidence of a difference in the mean waiting times in the four locations? A study reported that 45% of 16-29 year olds, 42% of 30-49 year olds, and 33% of 50 - 64 year olds often listened to rock music. Is there evidence of a significant difference among the age groups with respect to the proportion who often listened to rock music The owner of a restaurant serving Continental-style entrees has the business objective of learning more about the patterns of patron demand during the Friday-to-Sunday weekend time period. Based on the collected data, is there evidence of a relationship between type of dessert and type of entree? Zagat's publishes restaurant ratings for various locations in the United States. Based on the collected data, predict the price per person based on a variable that represents the ratings of the food. Two sample test for means - independent. Correlation Analysis Simple linear regression Two sample test for means - related. One sample test for proportions Multiple Regression One sample test for means Chi-square test of independence Two sample test for proportions. Time series forecasting One way analysis of variance Chi-square test for differences among two or more proportions

Explanation / Answer

56% is a proportion which and it is required to check whether more than half of the readers of online magazine have linked to an advertizer's website , we have to use E. One sample test for proportions Since both the samples are drawn from the same population and are related , we have to use D. Two sample test for means-related to compare them. For prediction using the historical data , we have to use F. Multiple Regression. In order to find out the differences in before/after blood pressure on the same set of volunteers , we use D. Two sample test for means-related.

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