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3 years ago

10

If the scores per round of golfers on the PGA tour are approximately normally distributed with mean 64.2 and standard deviation

1.39, what is the probability that a randomly chosen golfer's score is below 0 strokes?

1 answer:

WARRIOR [948]3 years ago

7 0

64.2 because I said so yahhhhh feeeellll meeeee

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The mean of a normally distributed group of weekly incomes of a large group of executives is $1,000 and the standard deviation i

olga_2 [115]

Answer:

The z-score (value of z) for an income of $1,100 is 1.

Step-by-step explanation:

We are given that the mean of a normally distributed group of weekly incomes of a large group of executives is $1,000 and the standard deviation is $100.

<em>Let X = group of weekly incomes of a large group of executives</em>

So, X ~ N( $\mu=1,000 ,\sigma^{2} = 100^{2}$ )

The z-score probability distribution for a normal distribution is given by;

Z = $\frac{X-\mu}{\sigma}$ ~ N(0,1)

where, $\mu$ = mean income = $1,000

$\sigma$ = standard deviation = $100

The Z-score measures how many standard deviations the measure is away from the mean. After finding the Z-score, we look at the z-score table and find the p-value (area) associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X.

Now, we are given an income of $1,100 for which we have to find the z-score (value of z);

So, <em><u>z-score</u></em> is given by = $\frac{X-\mu}{\sigma}$ = $\frac{1,100-1,000}{100}$ = 1

<em>Hence, the z-score (value of z) for an income of $1,100 is 1.</em>

4 0

3 years ago

Consider the video you just watched. Suppose we replace the original launcher with one that fires the ball upward at twice the s

Roman55 [17]

Answer:

height of the ball + distance of the ball

Step-by-step explanation:

if we calculate ^it we can find it

7 0

3 years ago

What is -6x-7x? i don't understand how to do it please teach me how to solve this

Aloiza [94]

<u>How to do Negative Addition</u>

Negative Addition is almost like Positive addition. The only catch in Negative Addition is that it is like subtracting. Let me make this clearer. If you draw a number line, with the positives and the Negatives, it will look somewhat like this. (Attachment down below). As you see, the Positives are increasing to the right, but the Negatives are increasing to the left.

When you do addition, you increase right? Like you have 8+4 which is 12. In positive addition you increase to the right, (look on number line). So, if you reverse it to -8+4 you would have to increase to the right, not the left. -8+4 is not -12 because when you add, you increase not decrease. (-12 is smaller than -8 and 4).

So that means -8+4 is -4.

Trick: Subtraction

Another way to think about it is replacing the addition sign to a minus sign then make the negative go away. So, we get 8-4 which is 4. And then we put the negative sign at the 4, so we get -4.

If you don't understand this, plz tell me

<u>Solving your Problem</u>

1) Take out the X to make it simple (Later we are going to add it back

2)Draw a number line to help you (Optional)

3) Use the subtraction Trick (Optional, but imma use it)

4) 6-7= -1 (Make that positive)

5) The answer is 1x

I hope this helped if you want here is some practice questions to get you ready and comfortable with this skill

Ps. Brianlist Would help

Practice Work~

1) -3+2

2) -10+9

3)-150+100

4) 60+-200

3 0

2 years ago

The ratio of boys to girls at the grammar school is 5:7. If there are 95 boys, how many girl are there? Show your work.

VLD [36.1K]

Answer:

B

Let total number of students be x.

Ratio of boys to girls= 5:7

=5x:7x

According to question,

5x =95

Or x=95/5

x=19

Now,

Number of girls =7x

=7*19

=133

3 0

3 years ago

PLSSSS HELPPPP MEEEEE I WILLLL<br> GIVEEEE BRAINLIEST!!!!!!!!!!!!!!!!!!!!!

AleksandrR [38]

Answer:

234532

Step-by-step explanation:

8 0

3 years ago