1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
jek_recluse [69]
2 years ago
11

Let x be normal distribution with mean 70 and standard deviation 2. given the following probability, p (x < a) = 0.9147, find

the value a.
Mathematics
1 answer:
lapo4ka [179]2 years ago
6 0

The value of a is 72.74.

<h3>What is Probability ?</h3>

Probability is the study of likeliness of an event to happen.

It is given that

The mean \rm \mu of the distribution is 70

Standard deviation \rm \sigma  is 2

p( x<a) = 0.9147

a = ?

From Z table

For p ( p < 0.9147) , z = 1.37

\rm Z = \dfrac { X - \mu}{ \sigma}

\rm \rm 1.37 = \dfrac { a - 70}{ 2}

a = 70+ 2*1.37

a = 72.74

Therefore the value of a is 72.74.

To know more about Probability

brainly.com/question/11234923

#SPJ1

You might be interested in
Amy is using a drawing program to complete a construction with which she is almost finished. Which construction is she completin
Vedmedyk [2.9K]

Given options : Two intersecting circles are drawn with a radius in each marked. the image will be linked.

Given options : An equilateral triangle inscribed in a circle

A square inscribed in a circle

A regular pentagon inscribed in a circle

A regular hexagon inscribed in a circle.

<u>Note. When we join an intersection point of two circles and centers of the circles it would form an equilateral triangle that would be inscribe inside a common portion of both circles..</u>

Therefore, an equilateral triangle inscribed in a circle would be correct option.

She is completing an equilateral triangle inscribed in a circle.

4 0
3 years ago
A bag of dog food contains 42 cups of dog food. Your dog eats 2 1/3 cups of dog food each day. How many days does the bag of dog
leva [86]

Answer: you keep adding 2 and 1/3 to get your answer. 18 day so the dog food should last up to 18days hope this helps

Dont take my word not 100% sure

3 0
3 years ago
75+12.55 = 100 +105. <br><br> I need the Asnwer
kolezko [41]

Step-by-step explanation:

Add 75 to 12.55. the answer would be 87.55.

100+105=205

205-87.55=117.45

5 0
2 years ago
Sally knows the number of hours worked per week for five of the her employees is
steposvetlana [31]

sixth person work per week=47 hours

Average:

The average is defined as the mean value which is equal to the ratio of the sum of the number of a given set of values to the total number of values present in the set

Given :

the number of hours worked per week for five of her employees is

30, 30, 38, 35, and 30.

the average work of 6 employees is  35 hours per week

Solution :

Let, Total work per week= S

sixth person work per week=x

Total work per week= Number of people x average working hour

S= 35(6) = 210..(1)

S = 30+30+38+35+30+x

S= 163+x..(2)

By equation 1 and equation 2

210= 163+x

210-163=x

47=x

sixth person work per week=47 hours

More details:brainly.com/question/2906096

#SPJ9

3 0
1 year ago
Consider the given density curve.
Pavel [41]

We want to find the median for the given density curve.

The value of the median is 1.

Let's see how to solve this.

First, for a regular set {x₁, ..., xₙ} we define the median as the middle value. The difference between a set and a density curve is that the density curve is continuous, so getting the exact middle value can be harder.

Here, we have a constant density curve that goes from -1 to 3.

Because it is constant, the median will just be equal to the mean, thus the median is the average between the two extreme values.

Remember that the average between two numbers a and b is given by:

(a + b)/2

So we get:

m = (3 + (-1))/2 = 1

So we can conclude that the value of the median is 1, so the correct option is the second one, counting from the top.

If you want to learn more, you can read:

brainly.com/question/15857649

5 0
2 years ago
Other questions:
  • Identify the vertex of the graph. Tell whether it is a minimum or maximum.
    11·2 answers
  • What are the solution of the equation 2|×+7|-3=5​
    15·2 answers
  • What is the difference between algebraic expression and algebraic equation?
    6·2 answers
  • A rare first-edition book is currently priced at $200. After one year, the price of the book is anticipated to be 1.15 times the
    15·2 answers
  • Which is the estimate of 2584?
    13·1 answer
  • which statement best explains why the sum of the areas of the two white squares in figure 2 is the same as the area of why squar
    8·1 answer
  • How to do this question plz answer me step by step plzz ​
    15·2 answers
  • Below is the number of innings pitched by each of the Greenbury Goblins' six starting pitchers during the Chin Tournament.
    5·1 answer
  • Please help me with this assignment please! I need help with each one...
    6·2 answers
  • Please help me with this! Write the equation of the line in fully simplified slope intercept form. Explanation and answer please
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!