Answer:
We do not reject the Null Hypothesis
Step-by-step explanation:
From the question we are told that:
Sample size 
Population mean 
Sample mean 
Standard deviation 
Significance level 
Generally the Null and and alternative Hypothesis are as follows
Therefore t critical Value is
Where
Therefore
From t Table
Generally the equation for Z Critical is mathematically given by
Therefore
Since the t test statistics is greater than the Critical value
Hence,we do not reject the Null Hypothesis
Answer:
She read 250 words per minute.
Step-by-step explanation:
Simply divide the words read by the time took to read that amount = (2000/8) words per minute = 250 words per minute.
Hope this helped!
Answer:
1) 20% change I think its an increase.
If needed I could try to answer the 2nd question but I am sure that I got the first one right.
Step-by-step explanation:
Answer:
To multiply rational expressions, first factor all numerators and denominators and cancel any factors you can. Then multiply what you have left.
Step-by-step explanation:
Answer:
39.66
Step-by-step explanation:
If the divisor is not a whole number, move decimal point to right to make it a whole number and move decimal point in dividend the same number of places.
Divide like you usually do
Put decimal point directly above decimal point in the dividend.
Check your answer.
