Suppose 4-year-olds in a certain country average 3 hours a day unsupervised and that most of the unsupervised children live in r
ural areas, considered safe. Suppose that the standard deviation is 1.8 hours and the amount of time spent alone is normally distributed. We randomly survey one 4-year-old living in a rural area. We are interested in the amount of time the child spends alone per day. Part (a) In words, define the random variable X. A) the number of 4-year-old children that live in rural areas
B) the time (in hours) a child spends unsupervised per day
C)the number of people that live in rural areas
D)the time (in hours) a 4-year-old spends unsupervised per day
E)the time (in hours) a 4-year-old spends unsupervised per week
Part I: Give the distribution of X.
X ~ ____ (____,_____)
Part II:
Find the probability that the child spends less than 1 hour per day unsupervised.
Write the probability statement.
P_________
What is the probability? (Round your answer to four decimal places.) _____
D)the time (in hours) a 4-year-old spends unsupervised per day
Step-by-step explanation:
Given that 4-year-olds in a certain country average 3 hours a day unsupervised and that most of the unsupervised children live in rural areas, considered safe
X - the time (in hours) a 4-year-old spends unsupervised per day
There are 3 prime numbers shown on the die: 2, 3 and 5. The probability of showing a prime number on a single die is 1/2, hence the probability of not showing a prime number is also 1/2. Total possible outcomes when two dice are rolled = 6*6 = 36. Total possible outcomes when two dice are rolled = 6*6 = 36.
