Question 1
(a)
This study is on the length of horse pregnancies from conception of birth.
Step 1
Let
be the random variable,
.
(337, 32)
~
The probability that pregnancies last between 330 days and 340 days,
( 330 < < 340)
Step 2
Converting the normal d
Question 1
(a)
This study is on the ordering Thai foods from a certain restaurant after evening lecture.
Step 1
Let be the random variable,
(28, 32)
~
.
The probability that my orders take between 24.0 and 30.0 minutes to arrive,
( 24 < < 30)
Step 2
Con
Question 1
-Standard deviation = -16.3
Mean = 200
+Standard deviation = 16.3
(a) Manufacturers filling technique is biased since it should be done to a preset level
+1
1
(b)
= 200 + 16.3 = 216.3
= 200 16.3 = 183.7
183.7
216.3
68%
(c)
Step 1
Let X be a r
Question 1
Let X be the random variable
X follows a normal distribution,
~
(32 , 42)
.
(a)
Step 1
The probability that my orders take more than 30 minutes and less than 35
minutes,
( 30 < < 35)
Step 2
Converting the normal distribution for a standard no