Math  /  Data & Statistics

Question3) A person's blood glucose level and diabetes are closely related. Let xx be a measurement in milligrams of glucose per deciliter of blood. After a 12 -hour fast, the variable x will have a distribution that is approximately normal with a mean of 85 and standard deviation of 25 . This is only true for adults under age 50 . Use this information to answer the questions that follow: a) What percentage of people have a blood glucose level less than 110? b) What percentage of people have a blood glucose level more than 120?120 ? c) What percentage of people have a blood glucose level between 100 and 125 ? 3) A survey found that people keep their television sets an average of 4.8 years. The standard deviation is 0.89 year. Find the following percentages assuming a normal distribution. a) What percent of people keep a TV less than 2.5 years? b) What percent of people keep a TV more than 4.2 years? c) What percent of people keep a TV between 3 and 4 years?

Studdy Solution
Find the percentage of people keeping a TV between 3 and 4 years.
Percentage for 2.02<Z<0.90 -2.02 < Z < -0.90 is 18.41%2.17%=16.24% 18.41\% - 2.17\% = 16.24\% .
The solutions are: a) 84.13% of people have a blood glucose level less than 110. b) 8.08% of people have a blood glucose level more than 120. c) 21.95% of people have a blood glucose level between 100 and 125. a) 0.47% of people keep a TV less than 2.5 years. b) 74.75% of people keep a TV more than 4.2 years. c) 16.24% of people keep a TV between 3 and 4 years.

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