Carla, a nutritionist, is working with a local health clinic…

Carla, a nutritionist, is working with a local health clinic that wants to estimate the percentage of patients who have a gym membership. At the clinic’s current wellness program, there are 312 enrolled patients. 82 of these patients have a gym membership. Identify the variable being recorded about the individuals in this scenario.

The estimated blood type distribution in the United States i…

The estimated blood type distribution in the United States is shown below. Blood Type O+ O- A+ A- B+ B- AB+ AB- Percentage 37.4% 6.6% 35.7% 6.3% 8.5% 1.5% 3.4% 0.6% Suppose one person from the US is selected at random. What is the probability the individual has an AB blood type? (Enter your answer as a decimal.)

Suppose the amount of water consumed by healthy adults in th…

Suppose the amount of water consumed by healthy adults in the United States is approximately normally distributed with a mean of 68 ounces and a standard deviation of 12 ounces. Use this information to answer the questions that follow. Some recommendations state that adults should drink at least 72 ounces of water per day. What is the probability a randomly selected healthy adult in the U.S. is following this recommendation? (Round to four decimal places.) What is the percentile for a healthy adult that drinks 50 ounces of water per day?  (Round to the nearest whole number.)  

A group of researchers is studying college students’ final e…

A group of researchers is studying college students’ final exam scores in an introductory statistics course. They believe performance may be influenced by weekly hours spent studying and average hours of sleep per night. Identify each variable as either an explanatory or a response variable. Final exam score is variable. Weekly hours spent studying is variable. Average hours of sleep per night is variable.