3. Reason quantitatively. A figure has vertices P(-3, 1), Q(9, 1), R(3, —7), and S(-9, -7).
1 answer:
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Answer: (15.47, 24.53)
Step-by-step explanation:
We know that the confidence interval for population mean is given by :_
, where n= sample size.
= standard deviation.
= sample mean.
z*= Critical value.
Given : n= 450
Critical value for 95% confidence = z*=1.96 [From z-value table]
Then, the 95% confidence interval will be :-
Hence, the 95% confidence interval for the mean change in score μ μ in the population of all high school seniors. : (15.47, 24.53)
Answer:
<h2>$ 22200 in higher yielding bank and $ 44400 in lower yielding bank</h2>Step-by-step explanation:
Jolene invests in two bank accounts. The first account gives a 4% interest per year and the second bank gives a 10% interest rate per year.
She puts twice as much in the lower yielding bank account. Let us denote the amount put in high yielding bank account by . Lower yielding bank account will have
.
Interest from lower yielding bank =
Interest from higher yielding bank =
Total Interest per year = $ 3996 =
∴ Jolene invested $ 22200 in higher yielding bank and $ 44400 in lower yielding bank.