Question
In: Statistics and Probability
USING EXCEL FORMULA Round your answers to 4 decimal places. According to CBS Money Watch, the...
USING EXCEL FORMULA
Round your answers to 4 decimal places.
According to CBS Money Watch, the average monthly household cellular phone bill is $100. Suppose monthly household cell phone bills are normally distributed with a standard deviation of $11.35.
- What is the probability that a randomly selected monthly cell phone bill is more than $127?
- What is the probability that a randomly selected monthly cell phone bill is between $87 and $110?
- What is the probability that a randomly selected monthly cell phone bill is no more than $82?
Solutions
orchestra answered 1 year agoRelated Solutions
Calculate the standard error. May normality be assumed? (Round your answers to 4 decimal places.) Standard...
Calculate the standard error. May normality be assumed?
(Round your answers to 4 decimal
places.)
Standard Error
Normality
(a)
n = 22, ππ = .45
(Click to select) No Yes
(b)
n = 45, ππ = .18
(Click to select) No Yes
(c)
n = 110, ππ = .16
(Click to select) Yes No
(d)
n = 547, ππ = .003
Just need help with A-D, the standard error
Calculate the standard error. May normality be assumed? (Round your answers to 4 decimal places.) Standard...
Calculate the standard error. May normality be assumed?
(Round your answers to 4 decimal
places.)
Standard Error
Normality
(a)
n = 20, ππ = .21
(Click to select) No Yes
(b)
n = 48, ππ = .27
(Click to select) Yes No
(c)
n = 117, ππ = .53
(Click to select) Yes No
(d)
n = 593, ππ = .002
(Click to select) Yes No
Calculate the standard error. May normality be assumed? (Round your answers to 4 decimal places.) Standard...
Calculate the standard error.
May normality be assumed? (Round your answers to 4 decimal
places.)
Standard
Error
Normality
(a) n
= 27, ππ = 0.35
(Click to
select)NoYes
(b) n
= 48, ππ = 0.53
(Click to
select)NoYes
(c) n
= 110, ππ = 0.41
(Click to
select)YesNo
(d) n
= 489, ππ = 0.006
(Click to
select)NoYes
Calculate the following probabilities using the standard normal distribution. (Round your answers to four decimal places.)...
Calculate the following probabilities using the standard normal
distribution. (Round your answers to four decimal places.) (a)
P(0.0 ≤ Z ≤ 1.8) (b) P(−0.1 ≤ Z ≤ 0.0) (c) P(0.0 ≤ Z ≤ 1.46) (d)
P(0.3 ≤ Z ≤ 1.58) (e) P(−2.02 ≤ Z ≤ −1.72) (f) P(−0.02 ≤ Z ≤ 3.51)
(g) P(Z ≥ 2.10) (h) P(Z ≤ 1.63) (i) P(Z ≥ 6) (j) P(Z ≥ −9)
Solve ΔABC. (Round your answers to two decimal places. If there is no solution, enter NO...
Solve ΔABC. (Round your answers to two decimal places.
If there is no solution, enter NO SOLUTION.)
α = 47.16°, a =
5.04, b = 6.17
smaller c:
c =
β =
°
γ =
larger c:
c =
β =
°
γ =
The following sample observations were randomly selected. (Round your answers to 2 decimal places.) X: 4...
The following sample observations were randomly selected.
(Round your answers to 2 decimal places.)
X:
4
5
3
6
10
Y:
9.8
10.6
8
15.4
19.6
a.
The regression equation is Yˆ Y^
= + X
b.
When X is 8 this gives Yˆ Y^ =
(Round all intermediate calculations to at least 4 decimal places.) According to a Health of Boston...
(Round all intermediate calculations to at least 4
decimal places.)
According to a Health of Boston report, female residents in Boston
have a higher average life expectancy as compared to male residents
(The Boston Globe, August 16, 2010). You collect the
following sample data to verify the results of the report. You also
use the historical (population) standard deviation of 8.2 years for
females and 8.6 years for males. (You may find it useful to
reference the appropriate table: z...
Find the optimal solution for the following problem. (Round your answers to 3 decimal places.) Minimize...
Find the optimal solution for the following problem.
(Round your answers to 3 decimal places.)
Minimize C =
5x + 11y
subject to
4x + 6y ≥ 13
7x + 4y ≥ 13
and
x ≥ 0, y ≥ 0.
What is the optimal value of x?
What is the optimal value of y?
What is the minimum value of the objective function?
Find the optimal solution for the following problem. (Round your answers to 3 decimal places.) Minimize...
Find the optimal solution for the following problem.
(Round your answers to 3 decimal places.)
Minimize C =
17x + 19y + 8z
subject to
12x + 14y + 21z ≥ 58
11x + 6y + 9z ≥ 116
and
x ≥ 0, y ≥ 0, z ≥ 0.
What is the optimal value of x?
What is the optimal value of y?
What is the optimal value of z?
What is the minimum value of the objective function?
Round your answers to the three decimal places. A dock is 1 meter above water. Suppose...
Round your answers to the three decimal places.
A dock is 1 meter above water. Suppose you stand on the edge of the
dock and pull a rope attached to a boat at the constant rate of a
1m/s. Assume the boat remains at water level. At what speed is the
boat approaching the dock when it is 10 meters from the dock? 15
meters from the dock? Isn’t it surprising that the boats speed is
not constant ?
At...
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