Mr. Nolan's code for his ATM card is a 4-digit number. The digits of the code are the prime factors of 84 listed from least to g
2 answers:
Answer:
2237
Step-by-step explanation:
We are given that Mr.Nolan's code for his ATM card is a 4- digit number.
We are given that the digits of the code are the prime factors of 84 listed from least to greatest.
We have to find the code for Mr.Nolan's ATM Card.
In order to find the code we will find the prime factors of 84.
The prime factors of 84 are 2,2,3 and 7.
Therefore, the code=2237
Answer:2237
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Answer:
(a) See Explanation
(b) and
(c) The shape is normal
(d)
Step-by-step explanation:
Given
-- mean
--- standard deviation
--- sample size
Solving (a): The reason we can't determine the probability that an amount to access internet by a household will exceed $55.
The question says that a lot of households pay low rates, but the percentage of the households in this category is not given. This means that it is impossible to determine the shape of the distribution.
Hence, the probability cannot be calculated.
Solving (b): Sample mean and Sample standard deviation
The sample mean estimates the population mean
So:
The sample standard deviation is calculated as thus:
Solving (c): The shape of the distribution.
We have:
--- The sample size
According to Central limit theorem, When the sample size is greater than 30, then the shape of the distribution is normal.
<em>Hence, the shape is normal</em>
Solving (d):
Calculate the test statistic (t)
So:
Referencing the z table, we have:
Hence: