Answer:
Step-by-step explanation:
Given the mean is 3.2, standard deviation is 0.8 and the sample size is 64.
-We calculate the probability of a mean of 3.4 as follows:
#First determine the z-value:
#We then determine the corresponding probability on the z tables:
Hence, the probability of obtaining a sample mean this large or larger is 0.0228
Answer:
Interest= $ 18.73
Step-by-step explanation:
Given : $600 at 9.5% for 120 days
To find : Find the interest due
Solution :
Simple interest formula 
Principle(P)=$600 , rate(r)=9.5%=0.095 , time (t)= 120 days
In years, 1 year = 365 days
1 day = 
year
120 days = 
year
Put values in the formula
Therefore, Interest= $ 18.73
Answer:
28 - 8= 20 ÷ 5 = 4
Step-by-step explanation:
Use distributive property. The answer is 4
After tax price $37.80
Sale tax - 8% or $2.80
