Topic
Q:
A set of exam scores is normally distributed with a mean \( =74 \) and standard deviation \( =8 \).
\( 95 \% \) of the data values lie between 58
\( \% \) of the exam scores are between 66 and 74 .
\( \% \) of the exam scores are between 74 and 90 .
\% of the exam scores are greater than or equal to 66 .
Q:
Approximate the area under the graph of \( f(x) \) and above the \( x \)-axis using \( n \) rectangles.
\( f(x)=2 x+3 \) from \( x=0 \) to \( x=2 ; n=4 \); use right endpoints
A. 11
B. 13
C. 17
D. 15
Q:
In a normal distribution, a data value located 1.4 standard deviations below the mean has Standard Score:
\( \mathrm{z}=-1.4 \)
In a normal distribution, a data value located 2.3 standard deviations above the mean has Standard Score:
\( \mathrm{z}=2.3 \)
In a normal distribution, the mean has Standard Score: \( \mathrm{z}=\square \)
Q:
A certain tranquilizer decays exponentially in
the bloodstream and has a half-life of 22
hours. How long with it take for the drug
to decuy to \( 82 \% \) of the original dose?
a) step 1 : Find \( K \) (Round to four decimalpleas)
b) step 2 : Use \( k \) to determine how longlinhours)
it will take for the drug to decay to \( 82 \% \) of
the original dose. (Round to one decinalplace)
Q:
7. \( 1,376 \div 43= \)
[Cairo-Hadaek El Quba 24]
\( \begin{array}{ll}\text { A. } 43 & \text { B. } 23 \\ \text { C. } 32 & \text { D. } 320\end{array} \)
Q:
A certain tranquilizer decays exponentially in
the bloodstrean and has a half-life of 22
hours. How long with it take for the drug
to decuy to \( 82 \% \) of the original dose?
a) step 1 : Find K (Round to four decinal pleces)
b) step \( 2: \) Use \( k \) to determine how longlinhours)
it will take for the devg to decay to \( 82 \% \) of
the original dose. (Round to one decinalplace)
Q:
Question
Approximate the \( x \)-value of the local minimum value of the function given below. Use Newton's method with the specified
initial approximation \( x_{0} \) to find \( x_{2} \). Round your answer to the nearest thousandth.
\[ f(x)=\frac{5}{6} x^{3}+\frac{5}{2} x^{2}-5 x+2, \quad x_{0}=3 \]
Provide your answer below:
\[ \]
\( x_{2} \approx \square \)
Q:
\( \int ( 2 \pi \sin w x + 2 ^ { x } ( 2 + \frac { 3 } { 2 ^ { x } } ) - \frac { 1 } { x ^ { 2 } } - \frac { \cos e c x } { \tan x } + e x ) d x \)
Q:
A three-digit number is to be formed from the digits 1,6 and 8 . What is the
probability that the number will:
Q:
(a) Dalam suatu janjang aritmetik, hasil tambah empat sebutan pertama
dan hasil tambah empat sebutan berikutnya ialah 82 . Carikan sebutan
pertama dan beza sepunya.
In an arithmetic progression. the sum of the lirst four terms is 34 and the sum
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