Exam 7: Statistics and Probability

Of 3981 obese patients who had weight loss bariatric surgery including stomach stapling, stomach banding and gastric bypass, 67 died after surgery. Suppose these statistics are used to determine the probability of death following bariatric surgery. Calculate that probability in the form of a percent. Round to the nearest tenth of a percent.

The number of seats occupied per flight on a jet for 16 trans-Atlantic flights was recorded. The numbers were 310, 419, 381, 416, 402, 352, 362, 320, 412, 386, 331, 407, 397, 377, 415, and 393. Calculate the mean, the median, and the mode of the number of seats occupied per flight.

The broken-line graph shows the percent of adults in the United States over 18 years old who took the influenza vaccine during recent years. Use the graph. What was the percent increase in U.S. adults aged 18 and older taking the influenza vaccine from 2006 to 2007?

The circle graph shows the budget allocation for the Griner family's income. The annual family income is $125,000. What fractional amount of the budget is designated for insurance costs?

A nursing student at a community college recorded the number of units required in each discipline to graduate with an Associate Degree Nursing. The results are shown in the circle graph. How many units are required to graduate with an Associate Degree Nursing?

A nurse monitors the blood glucose levels of a patient during the patient's hospital stay. The broken-line graph given below shows the readings during the three-day period. Use this graph. What was the patient's blood sugar level at 7 A.M. on Monday?

Suppose that a typical household in the United States has an average after-tax income of $38,450. The circle graph below represents how this annual income is spent. (Note: It is because of rounding that the percents do not add up to 100 $\%$ .) How much more is spent on food than on entertainment?

The broken-line graph shows the percent of adults in the United States over 18 years old who took the influenza vaccine during recent years. Use the graph Between what two consecutive years was there a decrease in the percent of U.S. adults aged 18 and older taking the influenza vaccine?

The number of big-screen televisions sold each month for 1 year was recorded by an electronics store. The results were 14, 10, 22, 22, 20, 17, 23, 24, 17, 22, 14, and 35. Calculate the mean, the median, and the mode of the number of televisions sold per month.

The broken-line graph below shows the average monthly snowfall during ski season around Aspen, Colorado. What is the average snowfall during March?

Two dice are rolled. a. What is the probability that the sum of the dots on the upward faces is 7? b. What is the probability that the sum of the dots on the upward faces is 13? c. What is the probability that the sum of the dots on the upward faces is less than 16? d. What is the probability that the sum of the dots on the upward faces is 4?

Eight health maintenance organizations (HMOs) presented group health insurance plans to a company. The monthly rates per employee were $410, $381, $391, $385, $413, $350, $390, and $416. Calculate the mean and the median monthly rates for these eight HMOs.

Cymbalta is a prescription medication used to treat depression. The probabilities of some of the side effects from this medication are listed in below table. a. If 35 patients take this medication, how many would you expect to experience headaches as a side effect? b. If 65 patients take this medication and five of them report dizziness as a side effect, is this more or less than the number you would expect based on the probabilities in the table? Side Effect Probablity Nausea 23\% Dry Mouth 10\% Headaches 18\% Fatigue 11\% Dizziness 8\%

A survey of 573 people showed that 711 had a group health insurance plan where they worked. On the basis of this survey, what is the empirical probability that an employee has a group health insurance plan? Write the answer as a decimal rounded to the nearest hundredth.

A nurse monitors the blood glucose levels of a patient during the patient's hospital stay. The broken-line graph shows the readings during the three-day period. Use this graph. If a normal blood sugar reading is between 75 and 150 milligrams/deciliter, how many readings are outside the normal range?

A nurse monitors the blood glucose levels of a patient during the patient's hospital stay. The broken-line graph shows the readings during the three-day period. Use this graph. Find the difference between the blood sugar reading at 7 A.M. Monday and the reading at 7 A.M. Tuesday.

The double-broken-line graph shows the number of Calories per day that should be consumed by women and men in various age groups. Use the following graph. Find the ratio of the number of Calories recommended for women 11 to 14 years old to the number recommended for women '23 to 50 years old.

The frequency polygon in Figure shows the distribution of scores of the approximately 1,548,000 students who took the SAT Math exam in 2010. Use the following figure Approximately how many students scored lower than 700?

The total cholesterol readings for 40 female patients seen this week at a doctor's office were recorded. Figure is a histogram of these data. Use the following figure.Total cholesterol readings lower than 200 are considered normal. How many patients had readings lower than 200?

The number of days that 12 patients stayed in a hospital after hip replacement was recorded during January and are shown in the table below. Find the mean and median length of hospital stay for these patients. Round to the nearest tenth. 5 8 4 4 8 6 4 5 5 8 5 4