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Marat540 [252]
3 years ago
8

Suppose a normal distribution has a mean of 50 and a standard deviation of 3. What is P(x≤53)?

Mathematics
1 answer:
Vera_Pavlovna [14]3 years ago
5 0

Answer:

Step-by-step explanation:

Use the formula to find the z-score, then go to the table that will give you the probability that the value is less than this z-score.

z=\frac{53-50}{3}=1

The probability that the value lies to the left of 1 on a standard bell curve is 84.1345%, or 84%, the third choice down.

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The Earth is approximately 8.0 × 103 miles in diameter, from pole to pole. What number is the distance equivalent to?
Vera_Pavlovna [14]

Answer:

The diameter of earth  from pole to pole  is equal to 8000 miles.

Step-by-step explanation:

The number to which the distance is equivalent is

8 * 10^3\\8 * 1000\\= 8000

Thus, the diameter of earth  from pole to pole  is equal to 8000 miles.

6 0
3 years ago
Tina practiced piano for 15 hours last month and 45 hours this month. Use multiplication to write a statement comparing the hour
Pani-rosa [81]

Answer: Hours by Tina practiced this month is 3 times the hours she practiced last month such that 15 x 3 =45 hours.


Step-by-step explanation:

Given : Duration of Tina practiced piano last month=  15 hours

Duration of Tina practiced piano this month=  45 hours

We can see 45 is a multiple of 15 such that 45=15\times3

Therefore, Hours by Tina practiced this month is 3 times the hours she practiced last month such that 15 x 3= 45 hours.

6 0
3 years ago
Read 2 more answers
First to answer gets brainliest
skad [1K]

Answer:

Step-by-step explanation:

Because you can't do -x+1 so it would be (1,0) and then you have x^2 +3x-4 which is (-5,6)

6 0
3 years ago
HELP ME PLZZzzzzzzzzzzzz!!
umka2103 [35]

Answer:     d, rotation

Step-by-step explanation:

trapezoid 1 can rotate into trapezoid 3.

Translation means to move every single point in the same direction

Reflection means to mirror every point aka flipping it over

Dilation means to stay with the same points but to change size

8 0
3 years ago
Use the table below to make a scatter plot of the data pairs (years since 1960, population) PLEASE HELP
Tpy6a [65]

Take 1960 as 0 then find out next year's

  • 1970=10
  • 1980=20
  • 1990=30
  • 2000=40
  • 2005=45
  • 2010=50

Also

Divide each population by one thousand i.e turn to decimal .

This we done to create the plot on graph easily

The graph has been attached

for the below points

  • (0,9.706)
  • (10,10.652)
  • (20,10.798)
  • (30,10.847)
  • (40,11.353)
  • (45,11.478)
  • (50,11.576)

7 0
2 years ago
Read 2 more answers
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