A random sample was taken to determine whether students from a certain classroom prefer to shop at Store A, Store B, or Store C.
2 answers:
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Answer:
The probability is
Step-by-step explanation:
From the question we are told that
The population mean is
The standard deviation is
The sample mean is
The sample size is n = 6 packs
The standard error of the mean is mathematically represented as
substituting values
Given that the can’s contents follow a Normal distribution then then the probability that the mean contents of a six-pack are less than 12 oz is mathematically represented as
Generally
So
substituting values
From the normal distribution table the value of is
=>
Answer:
100
Step-by-step explanation:
Given :
To Find : the value of expression 5a.
Solution :
We are given the value of 'a' i.e. a=20
Now to find the value of given expression 5a
⇒
put a = 20 in the equation
⇒
⇒
⇒
Thus , The value of expression 5a when a = 20 is 100