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The length of an elephant’s trunk is normally distributed with a mean of 175 cm and a standard deviation of 10 cm. What length separates the lowest 12% of trunk lengths? Round to the nearest centimeter.

A company has two regional offices, Office A and Office B, and they are interested in comparing the proportion of employees who are satisfied with their current work environment in both offices. Out of 150 employees from Office A surveyed, 90 reported being satisfied with their work environment. Out of 180 employees from Office B surveyed, 120 reported being satisfied with their work environment. At the 5% significance level, is there a significant difference in the proportion of satisfaction levels between the two offices? 1.)   Identify the null and alternative hypothesis.  Enter =, , or “not equal” for

A study shows the number of hours per week students at Seminole State spend on online homework is normally distributed with a mean of 12 hours and a standard deviation of 1.5 hours. If Jimmy spends 8 hours per week on the online homework, find the z-score of the hours spent. Is the z-score unusually low?

A player must cross 10 hurdles in a hurdle race. The probability that he will clear each hurdle is 0.86. What is the probability that he will clear more than 7 hurdles?

The nutritional rating was measured for cereals sold by Post and Nabisco.  A higher rating indicates better nutritional value.  The results are shown in the following box plots. Complete parts a and b. a.)  Which manufacturer has more variation in nutritional rating?  Explain why.   b.)  Which manufacturer has a higher nutritional rating? Explain why. 

Allogenic bone marrow or stem cell transplants are often used with or following chemotherapy. Which adverse outcome is most closely related to bone marrow or stem cell transplants?

Which Supreme Court case dealt with the president’s attempt to exert executive privilege to avoid turning over tapes during a criminal investigation?

Many bureaucrats have employment protections and serve through multiple presidential administrations, making it more difficult for the president to control and discipline them.

Justice Roberts was crucial for upholding most of the Affordable Care Act, reasoning that the Individual Mandate (requiring individuals to have qualifying health care or face a penalty) could be justified as a tax.

The creation of policy czars centralizes certain policy areas under direct presidential oversight without congressional approval.