I guess 26 first question ...
Answer:
.0025 grams
Step-by-step explanation:
We know that 1000 mg = 1 gram
2.5 mg * 1 g/1000 mg = .0025 grams
The GCF is three so it would be y-8.
the answer is root 5 /3 hope this helps
Answer: Yes, this sample provide evidence that people living in rural communities live longer than 77 years.
Step-by-step explanation:
Since we have given that
Average lifespan in the USA = 77 years
We need to check whether the people living in rural communities live longer than 77 years.
So, Hypothesis would be
Since n = 12
since n <30 so, we will use t test.
So, the test statistic value is given by
degrees of freedom = df = n-1 = 12-1 =11
At 95% significance level , t = 1.796
Since, 1.796< 9.125
So, we will reject the null hypothesis.
Hence, Yes, this sample provide evidence that people living in rural communities live longer than 77 years.