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lana [24]
4 years ago
5

Please help me with this 3 questions

Mathematics
1 answer:
andrey2020 [161]4 years ago
3 0
20 because that is the lowest number
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The average commute time to work (one way) is 25 minutes according to the 2005 american community survey. if we assume that comm
brilliants [131]
Given that t<span>he average commute time to work (one way) is 25 minutes according to the 2005 american community survey. if we assume that commute times are normally distributed and that the standard deviation is 6.1 minutes, what is the probability that a randomly selected commuter spends less than 18 minutes commuting one way

The probability that a randomly selected number from a normally distributed dataset with a mean of μ and a standard deviation of σ is less than a value, x, is given by:

</span><span>P(X\ \textless \ x)=P\left(z\ \textless \  \frac{x-\mu}{\sigma} \right)

Given that the average </span><span>commute time to work (one way) is 25 minutes and that the standard deviation is 6.1 minutes,

the probability that a randomly selected commuter spends less than 18 minutes commuting one way is given by:

P(X\ \textless \ 18)=P\left(z\ \textless \  \frac{18-25}{6.1} \right) \\  \\ =P(z\ \textless \ -1.148)=\bold{0.1256}</span>
3 0
4 years ago
Can someone help please
RUDIKE [14]

Answer:

<h2><em><u>Option</u></em><em><u>:</u></em><em><u> </u></em><em><u>D</u></em></h2>

Step-by-step explanation:

<em><u>Given</u></em><em><u>, </u></em>

7,625,750,263

<em><u>When</u></em><em><u> </u></em><em><u>estimated</u></em><em><u>, </u></em>

8,000,000,000

= 8 × 1,000,000,000

= 8  \times  {10}^{9}

8 0
3 years ago
p values for chi-square tests provide a quantitative measure of the probability that the results of another replicate experiment
nlexa [21]

Answer:

0.05

Step-by-step explanation:

P value that is less than 0.05, that is P < 0.05 means that the null hypothesis is false and should be rejected. If the P value is greater than 0.05, that is P > 0.05, it means the null hypothesis is true. The P value is also called the calculated probability value. P value subtracted from 1 is the probability that the alternative hypothesis is true.

8 0
3 years ago
An online store manager calculates that the store receives $8,647 in orders each hour of
Crazy boy [7]

Answer:

This question is not complete. Can you add the rest?

7 0
3 years ago
Read 2 more answers
What is the value of s in the equation below? S + 1 1/2 = 10 1/2
LenaWriter [7]

Answer:

S=9

Step-by-step explanation:

10\frac{1}{2} - 1\frac{1}{2} = 9

6 0
3 years ago
Read 2 more answers
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