One-sided hypothesis test

Reference no: EM1399838

A telemarketing company wants to find out if people are more likely to answer the phone between 8pm and 9pm than between 7pm and 8pm. Out of 96 calls between 7pm and 8pm, 72 were answered. Out of 105 calls between 8pm and 9pm, 90 were answered.

Using a one-sided hypothesis test with a 90% confidence level, which of the following statements do these data support?

• There is not sufficient evidence that the proportion of people who answer the phone between 8pm and 9pm is greater than the proportion who answer the phone between 7pm and 8pm.

• People are more likely to answer the phone between 8pm and 9pm.

• Telemarketers should not call at all during the evenings.

• People are more likely to answer the phone between 7pm and 8pm.

Reference no: EM1399838

Questions Cloud

Name the variable of interest : The faculty members at Boise State University were surveyed on the question "How satisfied were you with the Summer 2002 Schedule?" Their responses were to be categorized as "very satisfied," "somewhat satisfied," "neither satisfied nor dissatisfi..

Implications of price wars for a company : Under what environmental conditions are price wars most likely to occur in an industry? What are the implications of price wars for a company?

Correlation between height : Say, for example, the correlation is 0.75 between Height (measured in inches) and Weight (measured in pounds). If Height were changed to being measured in centimeters (where 1 inch = 2.54 centimeters) what effect would this have on the correlation..

Business strategy in the increasingly competitive pc market : Discussion is about Dell Computer's business strategy in the increasingly competitive PC market. For this discussion, research the company and its business strategy and answer the following case questions.

One-sided hypothesis test : Using a one-sided hypothesis test with a 90% confidence level, which of the following statements do these data support?

Modeled using the binomial distribution : Preliminary results indicate that once a golfer has checked in, there is only at 20% chance that he or she will be a no-show. This chance of being a no-show can be modeled using the binomial distribution.

Normal polulation with a population standard deviation : A sample of 64 observations is selected from a normal polulation with a population standard deviation of 15. The sample mean is 215. Ho: U>= 220 and H1: U

Assumptions of a particular model : Discuss the assumptions of this model. Specifically, how does each variable affect demand? How do the variables influence each other? What limitations might this model have? How can it be improved?

Upper and lower control-chart limits for averages : The overall average for the samples is 17 ounces. The range is only 0.5 ounce. Determine the upper and lower control-chart limits for averages for the boxes of cereal.

User Account

All Pages