The table shows the grades that science students earned on the last test. a:17 b:25 c:24 d:12 f:2 What percent of students recei
1 answer:
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Answer:
The given statement is false.
Step-by-step explanation:
We are given the following in the question:
95% confidence interval: (4.53,5.18)
Sample mean, = 4.85 seconds
Sample size, n = 20
Alpha, α = 0.05
Sample standard deviation, σ = 1.47 seconds
Degree of freedom = n - 1 = 19
95% Confidence interval:
Putting the values, we get,
Thus, the calculated confidence interval is different from the given confidence interval.
Hence, the given statement is false.
Answer:
.
Implied: .
Step-by-step explanation:
Get rid of the denominator by multiplying both sides of this equation with :
.
Isolate by moving
to the left-hand side of the equation. That is: add
to both sides of this equation.
.
By the symmetric property of equalities,