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Anestetic [448]
3 years ago
8

Of the 64 people who answered yes to question 6 were male. of the 70 people that answered no to the question 8 or male. if one p

erson is selected at random from the group what is the probability that the person answered yes or was male?
0.537
0.582
0.104
0.094
Mathematics
1 answer:
Colt1911 [192]3 years ago
3 0

Answer:

0.537

Step-by-step explanation:

There were 134 total people that were asked the question.

64 people said yes.

8 who said no were male.

So, 72 of the 134 said yes or were male.

The equation is 72/134.

72/134 ≈ 0.537!

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The taxi and takeoff time for commercial jets is a random variable x with a mean of 8.4 minutes and a standard deviation of 3.5
Lorico [155]

Answer:

0.6672 is the required probability.            

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 8.4 minutes

Standard Deviation, σ = 3.5 minutes

We are given that the distribution of distribution of taxi and takeoff times is a bell shaped distribution that is a normal distribution.

According to central limit theorem the sum measurement of n is normal with mean \mu and standard deviation \sigma\sqrt{n}

Sample size, n = 37

Standard Deviation =

=\sigma\times \sqrt{n} = 3.5\times \sqrt{37}=21.28

P(taxi and takeoff time will be less than 320 minutes)

P( \sum x < 320) = P( z < \displaystyle\frac{320 - 37(8.4)}{21.28}) = P(z < 0.4323)

Calculation the value from standard normal z table, we have,  

P(\sum x < 320) =0.6672 = 66.72\%

0.6672 is the probability  that for 37 jets on a given runway, total taxi and takeoff time will be less than 320 minutes.

7 0
3 years ago
Can someone help me solve this?
sdas [7]
The area of a triangle is base x height/2,
so all you have to do is multiply 6x20 to get 120 and then divide that by 2 to get 60 m squared!! :)
5 0
3 years ago
Dhani has 4 cards numbered 1 through 4. He removes 2 cards at random and adds their values.
DanielleElmas [232]

Answer:

2/3

Step-by-step explanation:

The total number of sums (not distinct) is 4\cdot 3=12, because we're removing without replacement.

Count the sums that fit the stipulation (sum \leq 5):

1,2,\\2,1\\1,3\\3,1\\1, 4\\4, 1\\2, 3, \\3,2

There are 8 sums that work. Therefore, the desired answer is \frac{8}{12}=\boxed{\frac{2}{3}}

3 0
3 years ago
Taisha uses the elliptical cross- trainer at the gym. Her general goal is to burn 280 calories per workout, but she varies by as
Fed [463]

Given - Taisha has a general goal is to burn the 280 calories.

she is varies by the 25 calories.

Find out the maximum and minimum of calories burn by the taisha.

To proof -

let us assume that the calories burn by the taisha be x.

as given the calories are varies by the 25 calories.

then the maximum calories equation becomes

x-25 = 280

x = 280 + 25

x = 305

the maximum calories burn by the taisha is 305 calories.

minimum calories equationbecomes

x + 25 = 280

x = 255

The minmum calories burn by the taisha is 255 calories.

Hence proved






8 0
3 years ago
Read 2 more answers
A pair of shoes is in a ‘35% off’ sale. The recommended retail price (RRP) is £86. How much do the shoes cost in the sale?
9966 [12]

Answer:

Without tax the shoes would cost £55.9.

Step-by-step explanation:

To get this you take the £86 and multiply it by 0.65 because with the 35% sale you are paying for 65% of the item. You get this number by subtracting 35 from 100 and convert it into a decimal.

6 0
3 years ago
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