Problem 7 (10 marks) Researchers studying the effects of a new diet found that the weight...
Problem 7 (10 marks) Researchers studying the effects of a new diet found that the weight loss over a one- month period by those on the diet was normally distributed with a mean of 12 pounds and a standard deviation of 5 pounds. a) What proportion of the dieters lost more than 10 pounds? (3 marks) b) What proportion of the dieters gained weight? (4 marks) c) What is the cut-off for the top 1% weight loss? (3 marks)
Researchers studying the effects of a new diet found that the weight loss over a one-month period by those on the diet was normally distributed with a mean of 10 pounds and a standard deviation of 5 pounds. a) What proportion of the dieters lost more than 12 pounds? b) What proportion of the dieters gained weight? c) What is the cut-off for the top 3% weight loss?
Researchers studying the effects of a new diet found that the weight loss over a one-month period by those on the diet was normally distributed with a mean of 10 pounds and a standard deviation of 6 pounds a) What proportion of the dieters lost less than 18 pounds? b) What proportion of the dieters lost weight? c) What is the cut-off for the bottom 1% weight loss?
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Problem 7 (10 marks) Researchers studying the effects of a new diet found that the weight loss over a one- month period by those on the diet was normally distributed with a mean of 12 pounds and a standard deviation of 5 pounds. a) What proportion of the dieters lost more than 10 pounds? (3 marks) b) What proportion of the dieters gained weight? (4 marks) c) What is the cut-off...
Wildlife conservationists studying grizzly bears in the United States found that the mean weight of 23 adult males was 629 pounds with a standard deviation of 90 pounds. Construct a 90% confidence interval for the mean weight of all adult male grizzly bears in the United States. Assume that the weights of all adult male grizzly bears in the United States are normally distributed. Round to the nearest whole number.
10. Suppose that an extensive study found that the weight loss in pounds after following a certain diet is normal with σ= 5.7 pounds. A new modification of the diet has been implemented and a random sample of 21 people use the modified diet for 6 months. For these people, the sample standard deviation of weight loss is 4.1 pounds. Does this result indicate that the variance of the weight loss for the modified diet is different? Use a significance...
The weight X of babies (of a fixed age) is normally distributed with mean μ = 212 ounces and standard deviation σ = 25 ounces. Doctors would also be concerned (not necessarily alarmed) if a baby is among the upper 10 percent in weight. Find the cut-off weight u, above which the doctors will be concerned. The weight X of salmon caught in a river is normally distributed with mean μ = 24 pounds and standard deviation σ = 6...
A diet center claims that it has the most effective weight loss program in the region. Its advertisements say, "Participants in our program lose more than 5 pounds within a month." Six clients of this program are weighed on the first day of the diet and then one month later. Let the difference be defined as Weight on First Day of Diet minus Weight One Month Later. Client Weight on First Day of Diet Weight One Month Later 1 155...
a Wksx 3 2 4 10. Five People are on diet reduction plan. Their results, are captured in the following table 5 6 5 lbsy 4 9 The fust pair of observations (X=3, 9=6) indicates the fust person lost 6 pounds in 3 weeks; the second par (x=2, Y =5) indicates that the second person lost s pounds in 2 weeks and soon, a) Graph the data and show that weeks of Diet and pounds lost have a positive correlatio...
Dr. I.C. Trout, a professional ichthyologist, is studying a population of catfish with his assistant, Etta Bass. Trout and Bass have established the mean weight for a catfish is 3.2 pounds, with a standard deviation of 0.8 pounds. Weights of catfish are normally distributed. Solve the following: A. What is the probability that a catfish will weigh more than 4.4 pounds? B. What is the probability that a catfish will weigh between 3 and 5 pounds? C. What is the...