Answer:
(221.39, 300.61) and (255.2223, 266.7777)
Step-by-step explanation:
Given that X, the lengths of pregnancies in a small rural village are normally distributed with a mean of 261 days and a standard deviation of 17 days
Middle 98% would lie on either side of the mean with probability ±2.33 in the std normal distribution on either side of 0
Corresponding we have x scores as
Between and
i.e. in the interval = (221.39, 300.61)
If sample size = 47, then std error of sample would be
So 98% of pregnancies would lie between
and
= (255.2223, 266.7777)
Answer:
Suzie's answers are incorrect.
Step-by-step explanation:
x^2+4x-12=2
+12 +12
x^2+4x=14
(if we put Suzie's answer in for x)-
2^2+4(2)=14
4+8=14
Suzie's first answer is incorrect (4+8=12)
Let's try the next one with Suzie's answer
(-6-2)(-6+6)=2
(-8)(0)=2
This answer is also incorrect. (-8*0=0)
3.65 e8
Step-by-step explanation:
The scientific notation e mean ‘10 raised to a particular power’. Therefore e8 is equivalent to 10 ^ 8.
We count the number of tens to the decimal point. In this case;
365000000
3.65000000
The decimal is <u>8</u><u> place values </u>from the right (since this is a whole number)
Answer:
Given that
N(t)=2t³+3t²-5t+1000
By differentiating with respect to t
a)
At t= 2 year
b)
at t= 8 yr
c)
At t= 10 year
N(t)=2t³+3t²-5t+1000
N(t)=2 x 8³+3 x 8²-5 x 8+1000
N(t)=2,176 turtles