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PtichkaEL [24]
3 years ago
6

The time it takes for a ferry to reach a summer resort from the mainland is Normally distributed with mean 2 hours and standard

deviation 12 minutes. The advertised duration of the trip is 2 hours and 15 minutes. The company operating the ferry would like to increase its operational efficiency by reducing the standard deviation so that they are on time 95% of the time. How much do they have to reduce the standard deviation
Mathematics
1 answer:
m_a_m_a [10]3 years ago
6 0

Answer:

2.88 minutes

Step-by-step explanation:

Solution can be found in attachment.

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Solve equation. Verify answer 14=-2w
notka56 [123]

Answer:

w = -7

Step-by-step explanation:

Isolate the variable, w. Note the equal sign, what you do to one side, you do to the other.

Divide -2 from both sides:

(14)/-2 = (-2w)/-2

(14)/-2 = w

Note that when you are dividing:

  • 1 negative & 1 positive sign will result in a negative answer
  • 2 negative sign will result in a positive
  • 2 positive sign will result in a positive

In this case:

(14)/-2 = -7

-7 is your answer for w.

~

8 0
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aliina [53]
Stem :          leaf :
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  4                 4,5,6,7
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7 0
3 years ago
Read 2 more answers
Weekly salary: $650; earnings to date: $30,000.​
Anuta_ua [19.1K]

Answer:

Step-by-step explanation:

30000/650= 46.15 weeks to accumulate $30000

ss tax rate is 12.4%

Medicare rate is 0.09%

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30,000*9%= $270

Total is $3990

Per pay period is

650*12.4%= $80.60

650*9%=$58.50

Total is $139.10

3 0
3 years ago
$4000 for 2years at 5% compounded quarterley
NeTakaya
\bf \qquad \textit{Compound Interest Earned Amount}
\\\\
A=P\left(1+\frac{r}{n}\right)^{nt}
\qquad 
\begin{cases}
A=\textit{accumulated amount}\\
P=\textit{original amount deposited}\to &\$4000\\
r=rate\to 5\%\to \frac{5}{100}\to &0.05\\
n=
\begin{array}{llll}
\textit{times it compounds per year}\\
\textit{quarterly, meaning 4 times}
\end{array}\to &4\\

t=years\to &2
\end{cases}
5 0
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Which number is greater . 60 or 7.5
myrzilka [38]

Answer:

60 is greater than 7.5.

step by step

5 0
3 years ago
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