Answer:
(e) The researcher should use a t-distribution because they do not know the true standard deviation of daily sugar intake in Durham county.
Step-by-step explanation:
A t-distribution is used when the true standard deviation (population standard deviation) is unknown. t-distribution uses the standard deviation of the samples.
In this case, it is the sample standard deviation that is known, therefore, the researcher should use a t-distribution.
Answer:
a. 8/20 - 2/5
b. 2/8
Step-by-step explanation:
Answer:
18
Step-by-step explanation:
1) Simplify the expression
-1 + 10 + 9
9 + 9
18
14/3 28/6 42/9 all these fractions are improper and equivalent to 4 2/3 when simplified
It is $7. Anything average 5 you need to round up
