Answer:the z score is - 1
Step-by-step explanation:
Assuming a normal distribution for the delivery time of sandwiches by Sammy's Sandwich Shop. We would apply the formula for normal distribution which is expressed as
z = (x - u)/s
Where
x = delivery times
u = mean delivery time
s = standard deviation
From the information given,
u = 25 minutes
s = 2 minutes
We want to determine the z-score for the number of sandwiches delivered in less than 23 minutes. It becomes
z = (23 - 25)/2 = - 1
Answer:
2.
Step-by-step explanation:
The first numbers in the ordered pairs are the x values;
Difference = 1 - 3 = -1
The absolute value is 2.
Answer:
2, 1
Step-by-step explanation:
In the sequence, each number is half of the previous number.
So we would multiply by 1/2 or divide by 2 to find the next number.
We can test this with a few numbers:
64*1/2=32
16*1/2=8
So the first missing number is 1/2 of 4.
1/2*4=2
The second missing number is 1/2 of the first missing number.
1/2*2=1
