Yesterday between nooN And midnight the temperature dropped by 29.6 if the temperature was-5.4 at midnight what was it at noon
1 answer:
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Answer:
The decision rule is
Fail to reject the null hypothesis
The conclusion is
There is no sufficient evidence to conclude that older people are slower
Step-by-step explanation:
From the question we are told that
The average time taken is
The sample size is
The sample mean is
The standard deviation is
The null hypothesis is
The alternative hypothesis is
Generally the test statistics is mathematically represented as
=>
=>
From the z table the area under the normal curve to the right corresponding to 0.7825 is
So from the question we see that the hence
The decision rule is
Fail to reject the null hypothesis
The conclusion is
There is no sufficient evidence to conclude that older people are slower
Option D: The expression has a variable raised to a fraction.
Explanation:
The given expression is
We need to determine the statement that why it is a non-example of a polynomial.
Option A: The expression has a variable raised to a negative exponent.
From the expression, we can see that the variables does not have a negative exponent.
Hence, Option A is not the correct answer.
Option B: The expression has a variable in the denominator of a fraction.
From the expression, we can see that there is no variables in the denominator .
Hence, Option B is not the correct answer.
Option C: The expression has a negative coefficient.
The polynomials can contain negative coefficient.
Hence, Option C is not the correct answer.
Option D: The expression has a variable raised to a fraction.
From the expression, it is obvious that the variable z is raised to a fraction.
Hence, this statement shows that the expression is not a polynomial.
Thus, Option D is the correct answer.