Answer:
The 90% confidence interval is 
Step-by-step explanation:
From the question we are told that
The sample size is n = 64
The sample mean is 
The standard deviation is 
Given that the confidence interval is 90% then the level of significance is mathematically evaluated as


Next we obtain the critical value of
from the normal distribution table , the value is

Generally the margin of error is mathematically represented as

=> 
=> 
The 90% confidence interval is mathematically represented as

=> 
=> 
Answer:
C |p| = 4
Step-by-step explanation:
If a player wins 4points during each turn, then, the total points will be +4points
If the player looses 4points, total points lost will be -4points
The total number of point p the player can have will be represented as;
|p| = 4 (since is both positive and negative 4 )
Note that the nodulus of a variable will return both positive and negative value of that variable
27+22=49
so your question doesnt really make sense, can u re-word it and make sure your problem is correct
Answer:
120(I'm not definitely sure)
Step-by-step explanation:
IQR= Q3- Q1= 170 - 50 = 120