Mathematics, 08.04.2020 01:48 ramireznaidelyn
The age of the children in kindergarten on the first day of school is uniformly distributed between 4.8 and 5.8 years old. A first time kindergarten child is selected at random. Round all answers to two decimal places.
1. The mean of the distribution is
a. 5.4
b. 5.2
c. 5.3
d. 5.5
2. The standard deviation is
a. 0.194
b. 0.289
c. 0.333
d. 0.261
3. The probability that the child will be older than 5 years old is
a. 0.3
b. 0.8
c. 0.2
d. 0.7
4. The probability that the child will be between 5.2 and 5.7 years old is.
a. 0.6
b. 0.7
c. 0.8
d. 0.5
5. If such a child is at the 45th percentile, how old is that child?
a. 5.25
b. 5
c. 4.75
d. 5.5
Answers: 3
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