Question
In: Statistics and Probability
2. Using diaries for many weeks, a study on the lifestyles of visually impaired students was...
2. 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 were obtained on a typical day. Researchers found that visually impaired students averaged 9.87 hours of sleep, with a standard deviation of 1.1 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 6.1 hours of sleep? b. What is the probability that a visually impaired student gets between 6.5 and 7.89 hours of sleep?
Solutions
orchestra answered 1 year agoRelated Solutions
Using diaries for many weeks, a study on the lifestyles of visually impaired students was conducted....
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 8.818.81 hours of sleep, with a standard
deviation of 1.61.6 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.
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 8.82 hours of sleep, with a standard deviation of 2.12 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.
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 9.6 hours of sleep, with a standard deviation of 1.21 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....
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 9.79 hours of sleep, with a standard deviation of
1.8 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...
A journal published a study of the lifestyles of visually impaired students. Using diaries, the students...
A journal published a study of the lifestyles of visually
impaired students. Using diaries, the students kept track of
several variables, including number of hours of sleep obtained in a
typical day. These visually impaired students had a mean of 10.1
hours and a standard deviation of 1.82 hours. Assume that the
distribution of the number of hours of sleep for this group of
students is approximately normal.
Below what hours 90% of the visually impaired students have their
sleep?...
A journal published a study of the lifestyles of visually impaired students. Using diaries, the students...
A journal published a study of the lifestyles of visually
impaired students. Using diaries, the students kept track of
several variables, including number of hours of sleep obtained in
a typical day. These visually impaired students had a mean of
9.06hours and a standard deviation of 2.11 hours. Assume that the
distribution of the number of hours of sleep for this group of
students is approximately normal. Complete parts a through c.
A. Find P(x<6)
b. Find P(8≤x≤10)
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