Answer:
To answer you question, we need the confidence internals formula, μ±Zc*(σ/
); N is the 20 psychology students, 0.5 the desviation standar and 4.3 is the medium based on national data, every fact in years.
Step-by-step explanation:
You need to consult the Zc value, you can find this table attached in this question; for 95%, we have a Zc value of 1.96.
Next step replace values: 4.3±1.96*(0.5/
) = 4.3±0.22 (rounding the result)
So, the confidence interval are:
4.08cm≤X≤4.52cm
Answer:
Jason likely misplaced the decimal, because 3x1 = 3, and if the decimal was between the 2 and the 5, the number would be near 3.
Step-by-step explanation:
(3.4 / 4) × 3 = 2.55
Answer: i believe the correct formula is A
Step-by-step explanation:
I have absolutely no idea. sorry that i didn’t answer but thanks for the second answer that i needed to ask my question. i’m stupid do i have no idea what it’s asking. sorry
