Amy’s grandmother is exactly 6 times older than Amy.
1 answer:
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Answer:
Part (A): The correct option is true.
Part (B): The null and alternative hypothesis should be:
Step-by-step explanation:
Consider the provided information.
Part (A)
A random sample of 100 students from a large university.
Increasing the sample size decreases the confidence intervals, as it increases the standard error.
If the researcher increase the sample size to 150 which is greater than 100 that will decrease the confidence intervals or the researcher could produce a narrower confidence interval.
Hence, the correct option is true.
Part (B)
The researcher wants to identify that whether there is any significant difference between the measurement of the blood pressure.
Therefore, the null and alternative hypothesis should be:
Answer:
Price of each muffin = $1.25
Price of each granola bar = $1.6
Step-by-step explanation:
Group 1:
6 muffins, 12 granola bars
Total money paid = $26.70
Group 2:
8 muffins, 15 granola bars,
Total money paid = $34.00
To find:
Price of each item?
Solution:
Let the price of one muffin = $
Let the price of one granola bar = $
As per group 1, the equation can be written as:
As per group 2, the equation can be written as:
.... (2)
Let us use elimination method to solve for and
.
Multiplying equation (1) with 8 and subtracting (2) from it:
Using equation (1):
Therefore, the answer is:
Price of each muffin = $1.6
Price of each granola bar = $1.25