What is the answer to 5 (x - 1) + 3 = 13
2 answers:
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Answer:
27 years
Step-by-step explanation:
Let Holly's age be h and Aunt's age be a. We can setup 2 equations and solve.
1.
2. a - 15 = h
We can plug in equation 2 into equation 1 to solve for aunt's age:
Holly's aunt's age is 27
Answer: 1.460
Step-by-step explanation:
Given : Researchers report that on average freshman who live on campus gain 15 pounds during their first year in college.
Let represents the population mean .
Then, the set of hypothesis will be:-
We assume that this is normal distribution.
Sample size : n = 10, which is a small sample (n<30) ,s o we use t-test.
Sample mean :
Standard deviation :
The test statistic for population mean for small sample is given by :-
Hence , the value of test statistic = 1.460