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ra1l [238]
3 years ago
5

The average score on a standardized test is 750 points with a standard deviation of 50 points. What is the probability that a st

udent scored more than 850 on the standardized test ?
Mathematics
2 answers:
hjlf3 years ago
8 0

Answer:

2%

Step-by-step explanation:

nalin [4]3 years ago
4 0
The probability that student scored more than 850 we shall proceed as follows:
z=(x-μ)/σ
where:
x=850
μ=750
σ=50
thus
z=(850-750)/50
z=2
thus
P(x>850)=1-P(x<850)=1-P(z<2)=1-0.9772=0.0228

Answer: P(x>850)=0.0228
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diamong [38]
Answer:
$238.33

Explanation:
Assume that the amount you need to save per month is x.

You will be saving monthly for 12 years. This means that the amount you will save after 12 years is:
amount saved after 12 years = 12 * 12 * x = 144x

Now, you need to save 20% of $<span>171,600.00. We will first need to calculate this value.
20% of $</span>171,600.00 = 0.2 * <span>171,600.00 = $34320

Now, to know your monthly savings, equate the total amount saved in 12 years with the amount that needs to be saved and solve for x as follows:
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x = 34320 / 144
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8 0
3 years ago
A salesperson at a clothing store earns a 2% commission on all sales. How much commission does the salesperson earn on a $300 sa
iogann1982 [59]
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8 0
4 years ago
Gerhard's Bistro has an 5:8 ratio of lunch customers to dinner customers. It averages 40 lunch customers. What is its average nu
zlopas [31]
Solve this ratio:

 5      40
--- = -----
 8       x

Then 5x = 320, and x = 64.  So, on a day on which there are 40 lunch customers, there are 64 dinner customers (answer).
4 0
4 years ago
Read 2 more answers
What would be the compound interest rate if Tom borrowed $6000 at a 3% interest rate for 2 years?
dybincka [34]

Answer:

What would be the compound interest rate if Tom borrowed $6000 at a 3% interest rate for 2 years?

Step-by-step explanation:

Matbe 23 days

3 0
3 years ago
Please Help!!!! I'll make you Brainliest!!!!
Fed [463]
Graph :
159 - 138 = 21
159 - 175 = 16
185 - 175 = 10
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3 years ago
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