Question

(1 point) Healty people have body temperatures that are normally distributed with a mean of 98.20∘F and a standard deviation of 0.62∘F . (a) If a healthy person is randomly selected, what is the probability that he or she has a temperature above 99.5∘F? answer: (b) A hospital wants to select a minimum temperature for requiring further medical tests. What should that temperature be, if we want only 1.5 % of healty people to exceed it? answer:

(1 point) Using diaries for many weeks, a study on the lifestyles of visually impaired students was conducted. The students kept track of many lifestyle variables including how many hours of sleep obtained on a typical day. Researchers found that visually impaired students averaged 8.48.4 hours of sleep, with a standard deviation of 1.911.91 hours. Assume that the number of hours of sleep for these visually impaired students is normally distributed.

(a) What is the probability that a visually impaired student gets less than 6.86.8 hours of sleep?

answer:

(b) What is the probability that a visually impaired student gets between 6.66.6 and 10.7110.71 hours of sleep?

answer:

(c) Twenty percent of students get less than how many hours of sleep on a typical day?

answer: hours

Answer #1

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(1 point) Using diaries for many weeks, a study on the
lifestyles of visually impaired students was conducted. The
students kept track of many lifestyle variables including how many
hours of sleep obtained on a typical day. Researchers found that
visually impaired students averaged 8.4 hours of sleep, with a
standard deviation of 1.91 hours. Assume that the number of hours
of sleep for these visually impaired students is normally
distributed
(a) What is the probability that a visually impaired
student...

Using diaries for many weeks, a study on the lifestyles of
visually impaired students was conducted. The students kept track
of many lifestyle variables including how many hours of sleep
obtained on a typical day. Researchers found that visually impaired
students averaged 8.28 hours of sleep, with a standard deviation of
1.9 hours. Assume that the number of hours of sleep for these
visually impaired students is normally distributed.
(a) What is the probability that a visually impaired student
gets...

Using diaries for many weeks, a study on the lifestyles of
visually impaired students was conducted. The students kept track
of many lifestyle variables including how many hours of sleep
obtained on a typical day. Researchers found that visually impaired
students averaged 8.85 hours of sleep, with a standard deviation of
2.19 hours. Assume that the number of hours of sleep for these
visually impaired students is normally distributed.
(a) What is the probability that a visually impaired
student gets less...

Using diaries for many weeks, a study on the lifestyles of
visually impaired students was conducted. The students kept track
of many lifestyle variables including how many hours of sleep
obtained on a typical day. Researchers found that visually impaired
students averaged 9.649.64 hours of sleep, with a standard
deviation of 2.282.28 hours. Assume that the number of hours of
sleep for these visually impaired students is normally
distributed.
(a) What is the probability that a visually impaired
student gets less...

Using diaries for many weeks, a study on the lifestyles of
visually impaired students was conducted. The students kept track
of many lifestyle variables including how many hours of sleep
obtained on a typical day. Researchers found that visually impaired
students averaged 8.9 hours of sleep, with a standard deviation of
2.37 hours. Assume that the number of hours of sleep for these
visually impaired students is normally distributed.
(a) What is the probability that a visually impaired
student gets less...

Using diaries for many weeks, a study on the lifestyles of
visually impaired students was conducted. The students kept track
of many lifestyle variables including how many hours of sleep
obtained on a typical day. Researchers found that visually impaired
students averaged 8.38 hours of sleep, with a standard deviation of
2.76 hours. Assume that the number of hours of sleep for these
visually impaired students is normally distributed. (a) What is the
probability that a visually impaired student gets...

Using diaries for many weeks, a study on the lifestyles of
visually impaired students was conducted. The students kept track
of many lifestyle variables including how many hours of sleep
obtained on a typical day. Researchers found that visually impaired
students averaged 9.83 hours of sleep, with a standard deviation of
2.02 hours. Assume that the number of hours of sleep for these
visually impaired students is normally distributed.
(a) What is the probability that a visually impaired student
gets...

Healthy people have body temperatures that are normally
distributed with a mean of 98.20∘F and a standard deviation of
0.62∘F
(a) If a healthy person is randomly selected, what is the
probability that he or she has a temperature above 98.7∘F?
answer:
(b) A hospital wants to select a minimum temperature for
requiring further medical tests. What should that temperature be,
if we want only 1.5 % of healthy people to exceed it? answer:
NormalDistribution

Healty people have body temperatures that are normally
distributed with a mean of 98.20 °F and a standard deviation of
0.62 °F .
(a) If a healthy person is randomly selected, what is the
probability that he or she has a temperature above 98.8 °F ?
answer:
(b) A hospital wants to select a minimum temperature for
requiring further medical tests. What should that temperature be,
if we want only 2.5 % of healty people to exceed it?

Assume that human body temperatures are normally distributed
with a mean of 98.20℉ with a standard deviation of 0.62℉.
a. A body temperature of 100.4℉ or above is considered to be a
fever. What percentage of people would be expected to have a
fever?
b. What percentage of people are expected to have a temperature
below 98.7℉?
c. Physicians want to select a minimum temperature for requiring
further medical tests. What should the temperature be, if we want
only 2.0%...

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