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
borishaifa [10]
3 years ago
5

A distribution of values is normal with a mean of 188 and a standard deviation of 20.8. Find the probability that a randomly sel

ected value is less than 167.2.
Mathematics
1 answer:
padilas [110]3 years ago
6 0

Answer:0.8413

Step-by-step explanation:

Mean= 188, Std Dev. =20.8, Z=(x-mean)/Std Dev

P(X less than 167.2)= P(Z less than (167.2-188)/20.8)

=P(Z less than (-20.8/20.8))

=P(z less than -1)= P(Z less 1)

The value of 1 in the normal distribution table is 0.3413

So we add 0.5 to 0.3413 =0.8413

You might be interested in
A box contains three pen, two markers and a highlighter. Tara selects one item at random and does not return it to the box. She
kakasveta [241]
Two out of six probability
3 0
3 years ago
The number of peanuts in bags is normally distributed with a mean of 172.5 peanuts and a standard deviation of 1.9 peanuts.
ValentinkaMS [17]
-2.368 tell me if I’m wrong
5 0
2 years ago
Identify which is a hypothesis or a conclusion. A polygon is a rectangle. The polygon has four congruent angles
Lelechka [254]

Answer:

Step-by-step explanation:

6 0
3 years ago
They're usually 365 days in each year every 4th year is call a leap year and has one extra day in February how many days are the
Mariana [72]

Answer:

Total number of days in 8 years is 2,922 days.

Step-by-step explanation:

Number of days in a Normal year  = 365 days

Number of days in a  leap year  =  366 days

Also, Leap year comes exactly ONE TIME in every FOUR YEARS.

⇒ In every consecutive 4 years, 1 year is a leap year.

⇒ So, number of leap years in 8 years  =   2

Now, 8 Years  = 6 Normal years +  2 leap Years

<u>Number of days in 6 normal years</u>

= 6 x ( Number of days in a regular year)

= 6 x (365 days)  = 2,190 days

<u>Number of days in 2 leap years</u>

= 2 x ( Number of days in a leap year)

= 2 x (366 days)  = 732 days

So, Total number of days in 8 years

= Number of days in 6 regular years  + Number of days in 2 leap years

= 2,190 days  +  732 days

= 2,922 days

Hence, total number of days in 8 years is 2,922 days.

5 0
3 years ago
A van and a truck both drove from Town A to Town B. The distance
Gala2k [10]
First we need to find out the time it took for the truck to reach town B.

Speed= \frac{Distance}{Time}

40= \frac{200}{T}
T=5hours

Now, because the van left 1.5 hours earlier and reached the destination 2.5 hours before, it took 1 hour less the the truck to arrive.

5hours-1hour=4hours which is the time it took for the van to arrive.

Now we use the speed equation again to work out speed.

Speed= \frac{200}{4}

Speed=50mph = speed of van

Hope this helped :)

4 0
3 years ago
Other questions:
  • Factor 18p-36 to identify the equivalent expression
    7·1 answer
  • 3x + 8y - 36 = 0
    13·2 answers
  • Can anyone give me a way to solve geometric sequence?
    6·1 answer
  • 4g2 (-g)3 = -4g5<br><br> True<br> False
    11·2 answers
  • HELP ASAP PLEASE <br> IN SPANISH BUT ITS FINDING AREA
    5·1 answer
  • On a school trip, a class travels 10 kilometers by train and 3.284 kilometers by bus. How far did the class travel?
    11·2 answers
  • What is the answer to his
    15·1 answer
  • -4x=-2 <br>please help me​
    5·1 answer
  • suppose that the probability of parents having a child with blond hair is 1/4.if there are 6 children in the family, what is the
    11·1 answer
  • Solve the inequaility - x/4 &lt;2
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!