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A fast food franchiser is considering building a restaurant at a certain loaction. According to a financial analysis, a site is acceptable only if the number of pedestrians passing the location averages more than 100 per hour. A random sample of 50 hours produced mean=110 and s=12 pedestrians per hour.
a) Describe type 1 and type 2 errors in this situation and the consequences of committing each type. which error is more expensive for the franchisor to make
b) Consider your answer in a) should you select alpha to be larger of smaller? explain
c) Would it be prefereable to ask instead whether there is enough evidence to conclude that the site is unacceptable? explain
A sample of 4 trucks is randomly selected. What is the probability that 2 of those tested have defective brakes.
Given that development is successful, for what endpoint values for a large market does developing the battery have a lower EMV than not developing the battery?
The severity of side effects experienced by patients while being treated with a particular medicine is under study. The severity is measured on the scale: none, mild, moderate, severe, very severe.
A certain map is drawn so that a distance of 0.5 inch on the map represents 12.5 miles of actual distance. If the distance between two towns is 4.5 inches on the map, what is the actual distance, in miles, between the two towns?
a producer of a certain type of electronic component ships to suppliers in lots of twenty. suppose that 60 of all such
Student who scores in the top 5% of statewide scores. How high should a student score be to win this award? Give your answer to the nearest integer.
A random sample of 200 workers from Factory A showed that 130 were satisfied with their job. Formulate and test the appropriate hypotheses at the 1% level of significance
a time for the 100-meter spring of 15.1 seconds at a school where the mean time for the 100-meter sprint is 17.6
The accounting department at Weston Materials, Inc., national manufacturer of unattached garages, reports that it takes two construction workers mean of 32 hours and standard deviation of 2 hours to erect the Red Barn model.
In a large section of statistics class, the points for the final exams are normally distributed with a mean of 72 and a standard deviation of 9. Grades are to be assigned according to the following rule.
Construct the 95 percent confidence interval for the proportion of all welders who graduated from a registered welding course.
Use Chebyshev's theorem to find what percent of the values will fall between 201 and 345 for a data set with a mean of 273 and standard deviation of 18.
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