Research by Frisch suggests that \_\_\_\_\_ body fat is required for the development and maintenance of regular ovulatory cycles. 18% 15% 22% 20% 25%
Added by Debra C.
Close
Step 1
Step 1: The question asks for the percentage of body fat required for the development and maintenance of regular ovulatory cycles, according to research by Frisch. Show more…
Show all steps
Your feedback will help us improve your experience
Jerelyn Nevil and 101 other Biology educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
Jerelyn N.
A woman needs at least 17% body fat for normal reproductive function. When the percentage of stored fat is too low, it disrupts ovulation and interferes with getting pregnant. Catherine has always been skinny. She once even thought about trying a modeling career. Catherine is now 29 years old, and she and her husband are thinking about having children soon. Catherine is 5 feet 4 inches tall and weighs 104 pounds. She calculated her BMI as 17.9 kg/m², but all the information about fertility and weight she could "google out" was about percent body fat, not BMI. What is Catherine's percent body fat? Round the answer to the first decimal place. During calculations, use numbers rounded to the second decimal place.
Adi S.
Three percent of a man's body is essential fat; for a woman the percentage is closer to 12.5%. As the name implies, essential fat is necessary for a normal healthy body. Fat is stored in small amounts throughout the body. Too much fat, however, can be dangerous to your health. For men between 18 and 39 years old, a healthy percent of body fat ranges from 8% to 19%; for women of the same age, it's 21% to 32%. Measuring body fat can be tedious and expensive. The "standard reference" measurement is by dual-energy X-ray absorptiometry (DEXA), which involves two low-dose X-ray generators and takes from 10 to 20 minutes. Because of the time and expense involved with the DEXA method, health professionals would like to be able to make a usable prediction of body fat from easily measurable variables such as weight or waist size. This Excel file shows the waist size (inches), weight (pounds), and percent body fat for 20 individuals. Question 1. What is the slope of the least squares regression line of %body fat on waist size? 2.22 (use 4 decimal places). Question 2. Find sb1, the estimate of the standard deviation ĂŹĆ’b1 of the least squares slope b1 (use 4 decimal places). .273 sb1, estimate of ĂŹĆ’b1 Question 3. Determine the 98% confidence interval for the slope of the least squares regression line of %body fat on waist size. lower bound upper bound Question 4. Determine a 98% confidence interval for the mean %body fat found in people with 40-inch waists (use 2 decimal places). lower bound upper bound Question 5. Determine a 98% prediction interval for the %body fat of an individual with a 40-inch waist (use 2 decimal places). lower bound upper bound Waist (in.) Weight (lb) Body Fat (%) 32 175 6 36 181 21 38 200 15 33 159 6 39 196 22 40 192 31 41 205 32 35 173 21 38 187 25 38 188 30 33 188 10 40 240 20 36 175 22 32 168 9 44 246 38 33 160 10 41 215 27 34 159 12 34 146 10 44 219 28
Dominador T.
Recommended Textbooks
Biology for AP Courses
Objective Biology for NEET
Introduction to General, Organic and Biochemistry
Transcript
Watch the video solution with this free unlock.
EMAIL
PASSWORD