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Margaret [11]
2 years ago
11

Question 4 of 25

Mathematics
1 answer:
Gnoma [55]2 years ago
7 0

Answer:

Step-by-step explanation:

We are looking for P(58 < x < 64). We need to find the percentage to the left of the z-scores for each of these numbers. To find the z scores, use the formula:

z=\frac{x_i-\bar{x}}{\sigma}

z=\frac{58-62}{4} which gives us a z-score of -1. The percentage of numbers to the left of a z-score of -1 is .1586553

Now for the other z-score:

z=\frac{64-64}{4} which gives us a z-score of .5. The percentage of numbers to the left of a z-score of .5 is .69146246

The lower percentage subtracted from the higher gives the area in question:

.69146246 - .1586553 = .53280716, or as a percentage, 53.3%, choice A.

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Is how old are you? a statistical question
HACTEHA [7]

Answer:

Hey!

NO IT IS NOT A STATISTICAL QUESTION!

Step-by-step explanation:

This is because you are including ONLY YOU...this wont work as statistics take data from a COLLECTION of people or things!

<u>So a better question will be :</u>

HOW OLD ARE THE PEOPLE IN MY NEIGHBORHOOD?

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HOPE THIS HELPS!!

5 0
3 years ago
A marble is drawn at random from a bag containing 2 blue marbles, 3 yellow marbles, and 7 orange marbles. What is the probabilit
elixir [45]

total marbles: 2+3+7 = 12

add blue and yellow 2+3=5

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probability = 7/12 marble is not one of those

4 0
3 years ago
State the open intervals over which the function is (a) increasing, (b) decreasing or (c) constant
ipn [44]

Answer:

a. [-3, 4]

b. (-inf, -3]

c. [4, inf)

Step-by-step explanation:

Our intervals will represent the x-values

We know that since there's an arrow pointing to the left of the line that it goes on infinitely

Same thing when the arrow is going to the right

Then we can just looking at the x-values on the graph for the intervals where it starts and stops

Hope this helps

Best of luck

3 0
2 years ago
It is 7 times as much to go to an amusement park as it is to go to the movies if it is $9 to go to the movies how much is it to
julsineya [31]
It will be 63 dollars to go to a amusement park
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3 years ago
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On the grid, draw the line with<br> the equation x = -4
nexus9112 [7]

Answer:

Step-by-step explanation:

On a grid,

go to the middle, aka 0,0

move left 4 times, but stay on the same line. Then draw that line up and down on the -4 of x.

sorry if this isn't clear

6 0
2 years ago
Read 2 more answers
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