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NemiM [27]
3 years ago
10

Answer this math question. ill give brainliest.

Mathematics
1 answer:
melisa1 [442]3 years ago
3 0

Answer: He OLD! XD

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The golf scores for a school team were normally distributed with a mean of 68 and a standard deviation of three. What the probab
Sloan [31]

Answer:

P(X

And we can find this probability using the normal standard table or excel and we got:

P(Z

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

Solution to the problem

Let X the random variable that represent the golf scores of a population, and for this case we know the distribution for X is given by:

X \sim N(68,3)  

Where \mu=68 and \sigma=3

We are interested on this probability

P(X

And the best way to solve this problem is using the normal standard distribution and the z score given by:

z=\frac{x-\mu}{\sigma}

If we apply this formula to our probability we got this:

P(X

And we can find this probability using the normal standard table or excel and we got:

P(Z

We can use the following excel code to find it: "=NORM.DIST(-1,0,1,TRUE)"

8 0
3 years ago
Several years ago, Matt built a rectangular flower bed at his house. The width of the flower bed was 14 inches less than the len
sveticcg [70]
D. 24.47 inches
I think this is the right answer
4 0
3 years ago
Read 2 more answers
Is the expression of y=1/7x and example of direct variation? If, yes then what is the constant of a variation
weqwewe [10]

Answer:

direct variation

constant = 1/7

Step-by-step explanation:

The equation for direct variation is

y = kx

y = 1/7 x is in this form with the constant of variation being 1/7

3 0
3 years ago
Read 2 more answers
Demons answer this for me.
denis-greek [22]

Answer:

Step-by-step explanation:

if you have negative numbers of x (this means negative meters) then the equation transform them into negative yards.

then replace y by 40yd in the equation like

40 = 1.09x

x = 40/1.09 = 36.7 meters

so in a 40yd race, there are 36.7 meters.

4 0
3 years ago
Just need a little help figuring this out
liberstina [14]

Answer:

Ok so T=time so a b and c would be 300 -10(a or b or c)

Step-by-step explanation:

5 0
3 years ago
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