The answer should be 101.
Answer:
Mikhail is 38 years old.
Step-by-step explanation:
I found that Gabrielle is 28 and Mikhail is 38.
28 + 38 = 66 38 - 28 = 10
If this answer is correct, please make me Brainliest!
Answer:
c
Step-by-step explanation:
i just took the test
Answer:
Step-by-step explanation:
A) From the stem-leaf plot, we see that out of 21 tunas, 5 have dangerous levels of copper since the levels go beyond 5.7 parts per million. The required proportion is 5/21=0.2381
B) Given the sample mean is {x}=4.77, sample standard deviation s=1.16 and the sample size is n=21.
Since the population standard deviation is not known, we use t-distribution.
So the 98% CI for mean is
4.77 ± t{1-0.02 /2,20} x 1.16/sqrt(21) = (4.13, 5.41)}
We are sure with 98% confidence the true copper level (in parts per million) lies in the interval (4.13, 5.41)
