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vaieri [72.5K]
1 year ago
12

What is the probability of randomly selecting a z-score less than z = 2.25 from a normal distribution?

Physics
1 answer:
Vanyuwa [196]1 year ago
4 0

The probability of randomly selecting a z-score less than z = 2.25 from a normal distribution is 0.8944

Probability is the branch of arithmetic concerning numerical descriptions of ways in all likelihood an occasion is to occur, or how probably it's far that a proposition is genuine. The possibility of an event is a number between zero and 1, wherein, more or less talking, zero suggests the impossibility of the event and 1 shows the truth.

Probability = the range of methods of achieving achievement. the total range of viable results. As an example, the chance of flipping a coin and it being heads is ½, due to the fact there's 1 way of having a head and the full number of possible effects is two (a head or tail). We write P(heads) = ½ .

A probability is a range that reflects the danger or chance that a particular event will occur. Chances can be expressed as proportions that vary from 0 to at least one, and they also can be expressed as probabilities ranging from zero% to 100%.

Learn more about probability here brainly.com/question/24756209

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What is the kinetic energy of the 80kg skydiver if he is moving at 60m/s? (Show the equation, show your work and answer with uni
s344n2d4d5 [400]

Answer:

The answer to your question is:    Ke = 144000 Joules

Explanation:

Data

Kinetic energy = ?

mass = 80 kg

speed = 60 m/s

Equation

              Ke = \frac{1}{2} mv^{2}

              Ke = \frac{1}{2} (80)(60)^{2}

             Ke = 144000 Joules

4 0
3 years ago
Sonar is used to determine the speed of an object. A 38.0-kHz signal is sent out, and a 40.0-kHz signal is returned. If the spee
ANEK [815]

Answer:

The velocity is  v  =  8.743 \ m/s

Explanation:

From the question we are told that

    The frequency of the signal sent out  is  f_s  =  38.0 \ kHz  =  38.0 *10^{3} \ Hz

    The frequency of the signal received is  f_r  =  40.0 \ kHz  =  40.0 *10^{3} \ Hz

     The  speed of sound is  v_s  =  341 \ m/s

Generally the frequency of the sound received is  mathematically represented as

         f_r =  f_s  [\frac{v_s  + v}{v_s  - v} ]

where v is the velocity of the object

       =>      40 *10^{3} =  38 *10^{3} *   [\frac{341  + v}{341  - v} ]

       =>      1.05263 = \frac{341+v }{341-v}

       =>   358.94 - 1.05263v  =  341 + v

      =>    17.947 =  2.05263 v

      =>    v  =  8.743 \ m/s

7 0
3 years ago
.Roshan applied a force of 144 N to the side of a cube-shaped wooden block to slide it away from himself . Assuming that he appl
ExtremeBDS [4]
  • side of cube=4cm

Area=side^2=4^2=16cm^2=0.0016m^2

  • Force=144N

\\ \sf\longmapsto Pressure=\dfrac{Force}{Area}

\\ \sf\longmapsto Pressure=\dfrac{144}{0.0016}

\\ \sf\longmapsto Pressure=90000Pa

3 0
3 years ago
A liquid retains a fixed volume regardless of the shape of the container which holds it. truefalse
VashaNatasha [74]
The answer is True hope it helps
3 0
3 years ago
Read 2 more answers
I need help on this question
Bess [88]
The answer is Proton!

The proton is always the one with the plus sign.

The electron is the one with the negative sign.

The neutron is the one with no signs and the one that is close to the proton.
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3 years ago
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