Answer:
Z-score = 1.18
Step-by-step explanation:
The z-score measures how many standard deviations from the mean a data is
Therefore the z score is the quotient between the difference between a value and the mean and the standard deviation

Where
μ is the mean, x is a data of the population and
is the standard deviation
In this case

Then the z-score is

Answer:
a=65, m=−1
a=65, m=1
Step-by-step explanation:
Answer: 8359
Step-by-step explanation:
The formula for sample size needed for interval estimate of population proportion :-

Given : The significance level : 
Critical value : 
Previous estimate of proportion : 
Margin of error : 
Now, the required sample size will be :-

Hence, the required sample size = 8359
Patty because she has the lowest time out of them all. From least to greatest Patty would be the least with her time being shorter than the rest
Answer:
true, true, false, true
Step-by-step explanation:
(4/9)*63=28
(4/9)*18=8
(4/9)*96=42.666667
(4/9)*36=16