The number of ways n different objects can be arranged, taking r objects at a time, without repeating any object is given by:
Given 6 different digits, the number of ways to arrange 6 different digits to make a 3 digit number without reapeating a digit is given by:
Therefore, the number of <span>ways 6 digits can be arranged to make a 3-digit number without repeating a digit</span> is
120 ways.
Answer: (0.465, 5.535)
Step-by-step explanation:
Formula to calculate the confidence interval (<em>when population standard deviation is unknown</em>) is given by :-
, where = sample mean.
s= sample standard deviation.
n= Sample size.
= critical value
By considering the given information , we have
s=0.75
n= 9
Significance level = [1-0.90=0.1]
By using students' t distribution -table , the critical value for 95% confidence level :
[Note: degree of freedom = n-1]
Now, the 90% confidence interval for the true mean weight of these Southern California avocados will be :
Hence, the required confidence interval =(0.465, 5.535)
179° the process is shown in the following picture
Answer:
Answer is (A) 8
Step-by-step explanation: