Question

Use Matlab to find three decimal places the largest value of x before the error in the exp(x) ~ 1 + x + x²/2 + x³/6 exceeds 3.128 percent. The largest value of x is?

Answer #1

**1) Set a range with resolution .001 in order to match
the required accuracy.**

**2) Calculate the left hand side and the right hand
side.**

**3) Calculate the error and get it's
absolute.**

**4) Divide the absolute value of the error by
e ^{x} to get the percent error.**

**5) Checking if the percent error exceeds the limit or
not.**

**COMMAND WINDOW:**

**1.171**

If n=27, ¯ x (x-bar)=46, and s=9, find the margin of error at a
95% confidence level (use at least two decimal places)
If n=19, ¯xx¯ (x-bar)=48, and s=6, find the margin of error at a
95% confidence level (use at least two decimal places)
If n=16, ¯xx¯ (x-bar)=48, and s=6, find the margin of error at a
99% confidence level (use at least three decimal places)

Use Newtons method to determine the largest zero of f(x) =
1.37x+3.75sin(1.21x)−2.97, accurate to three decimal places. In
your working section, provide evidence for how you selected the
starting value that will lead to the correct zero, and you must
show full working for the ﬁrst two iterations.

questions should be done on MATLAB
5) For the function f(x) = cos(x)exp(-x2) find and at 0.5 and =
1.

1. If n=23, x¯ (x-bar)=32, and s=5, find the
margin of error at a 95% confidence level (use at least two decimal
places)
2. If n=24, ¯x¯ (x-bar)=47, and s=4, find the
margin of error at a 99% confidence level (use at least three
decimal places)

Find the value x for which: (Use Table 4).
(Round your answers to 2 decimal places.)
x
a.
P(F(6,15) ≥ x) = 0.025
b.
P(F(6,15) ≥ x) = 0.050
c.
P(F(6,15) < x) =
0.025
d.
P(F(6,15) < x) =
0.050
*Please note*
Two other people have already answer this question for others
INCORRECTLY the answers are not 5.27, 3.94, .29, and .36
respectively.

Find the indicated value to three decimal places, and
show a plot how this critical value was determined (by hand sketch
or using Minitab Express).
a. z0.025 b. z0.05 c. z0.005
d. z0.10/2 e. z0.05/2 f. z0.01/2
g. z0.04/2 h. z0.04 i. z0.10

I need the answer for (e) : Use trial and error to find a value
of the exponential smoothing coefficient α that results in
a smaller MSE than what you calculated for α = 0.20. Use a
two-decimal digit precision.
Consider the following time series data.
Week
1
2
3
4
5
6
Value
18
15
15
13
17
14
(b)
Develop a three-week moving average for this time series.
Compute MSE and a forecast for week 7.
If required,...

Error estimation by halfing: Integrate f(x) =
(sin(1/2)pi x) from 0 to1 by 2 decimal places with h = 1, h = 0.5,
h = 0.25, and estimate the error for h = 0.5 and h = 0.25 by 5
decimal places

Answers to the following questions should be calculated in
Matlab and given to 4 decimal places. Be careful not to introduce
errors by rounding in any intermediate calculations as this may
lead to an incorrect final answer. A confidence interval is desired
for the true average load loss μ (watts) for a certain type of
induction motor when the line current is held at 10 amps for a
speed of 1500 rpm. A random sample of 52 motors were tested...

2)
• z-value should be expressed to three decimal places: e.g.,
z=1.645.
• Before you start each question, you should determine if you
are dealing with the population mean or proportion since what you
do depends on the type of parameter at hand.
• When handling proportion problems, write/use/plug proportions
as decimals (e.g., not 54%, but .54).
• In the beginning, state clearly if you do a 1-tailed or
2-tailed test. State clearly your H0 and H1 using correct Greek...

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