The Sydney cricket ground can contain a football field of approximately 147m by 136m. What distance would be covered by walking
1 answer:
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The expression Joelle should use to find the tip amount is 38(0.20).
<h2>Expression </h2>In mathematics, an expression is defined as a set of numbers, variables, and mathematical operations that are formed according to rules which are dependent on the context.
<h2>Given to us</h2>Percentage tip of Joelle hairdresser = 20%,
Joelle's haircut costs = $38,
<h3>Percentage Conversion</h3>As we know that percentage shows a part of something, therefore,
Hence, the expression Joelle should use to find the tip amount is 38(0.20).
Learn more about expression:
Answer:
The mean of the sampling distribution is 20 and the standard deviation is 2.89.
Step-by-step explanation:
The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean and standard deviation
, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean
and standard deviation
.
For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.
Population:
Mean 20, standard deviation of 5.
Sampling distribution:
3 rounds
Mean = 20
The mean of the sampling distribution is 20 and the standard deviation is 2.89.