A marketing researcher for a phone company surveys 100 people and finds that that proportion of clients who are likely to switch providers when their contract expires is 0.15. A. What is the standard deviation of the sampling distribution of the proportion? B. What is the probability that the sample proportion is between 0.30 and 0.40?

In 2000, campbell soup company launched an ad campaign that showed prepubescent boys offering soup to prepubescent girls. the girls declined because they were concerned about their calorie intake. the boys explained that “lots of campbell’s soups are low in calories,” which made them ok for the girls to eat. the ads were pulled after parents expressed concern. why were parents worried? i

In june, one of the processinthe assembly department started the month with 25,000 units in its beginning work in process inventory. an additional 310,000 units were transferred in from the prior department during the month to begin processing in the assembly department. there were 30,000 units completed and transferred to the next processing department during the month. how many units the assembly department started the month with 25,000 units in its beginning work in process inventory. an additional 310,000 units were transferred in from the prior department during the month to begin processing in the assembly department. there were 30,000 units completed and transferred to the next processing department during the month. how many units were in its ending work in process inventory

Astudent finds data on an internet site that contains financial information about selected companies. he plans to analyze the data and use the results to develop a stock investment strategy. what kind of data source is he using? what concerns might you have about drawing conclusions from this data set?