On the planet of Mercury, 4-year-olds average 3.2 hours a day unsupervised. Most of the unsupervised children live in rural areas, considered safe. Suppose that the standard deviation is 1.4 hours and the amount of time spent alone is normally distributed. We randomly survey one Mercurian 4-year-old living in a rural area. We are interested in the amount of time X the child spends alone per day. (Source: San Jose Mercury News) Round all answers to 4 decimal places where possible. a. What is the distribution of X? X - N b. Find the probability that the child spends less than 1.8 hours per day unsupervised. % (Round to 2 decimal c. What percent of the children spend over 4 hours per day unsupervised. places) d. 89% of all children spend at least how many hours per day unsupervised? hours.

Q: Complete the following operations showing all of your work -1 0 7 0 12 0 + 1 2 I 1 JI z -9 -9 0 1 27…

A: The given matrix operation,The aim is to find the matrix operation.

Q: ancy is a waitress at Seventh Heaven Hamburgers. She wants to estimate the average amount each table…

A: given data n=5data score are, 12,8,7,5,8CI=0.90α=1-0.90=0.10first we find out the mean and standard…

Q: I cant see the entire page of step 1. Is anything missing on page 1 or 2?

A:

Q: Solve for x: 1) 5 92 X+2 X

A: To solve for x.

Q: dt √√3 3+t²

A: The given integral is 1/(3+t2), limit from √3 to 3.

Q: Select all the distances that show how far sound will travel through the air in 15 minutes according…

A:

Q: For Exercise, perform the indicated operations. (6 – V5i)-

A: The given expression is

Q: 2. (-2, 3) and (2, -1) m%3D X,- X, 1- 2 -

A: Given that (-2,3) and (2,-1)

Q: Let ā = 7i – 3 and 6 = 3ỉ – 73. Find ā - b

A:

Q: IPIAI Evaluate p²^z^¸¶= J=

A: The given integral is;

Q: R =  C − S t ; S

A: R=C-St

Q: Perform the indicated operations when A= A + IA 0-1 2 1

A: We have a 2×2 matrix A  We need to find the matrix A+IA , where I is Identity matrix

Q: Fuid x;on [o,360) 2"(-2)

A:

Q: D X A W - B В C

A: X=0.250 inch, Y=2.0625, and W=3.375Z = ?

Q: Given u = and v =, find 2u • v

A: We will solve this question using dot product.

Q: 6 15 10 /3х - 2 12 D C

A:

Q: Find the 19 ad gud deruaitive 5. and =55" 25 dr- ds

A: