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svetoff [14.1K]
3 years ago
12

Candice scored 74 on an exam that had a mean of 66 and a standard deviation of 4. Erin scored 58 on an exam with a mean of 42 an

d a standard deviation of 7. Who scored better?
Mathematics
1 answer:
Maslowich3 years ago
6 0

Answer:

Erin

Step-by-step explanation:

Z score formula:

z = (x-μ)/σ, where x is the raw score, μ is the population mean, and σ is the population standard deviation.

For Candice:

Z score = 74 -66/4

Z score = 2

For Erin

Z score = 58 - 42/7

Z score = 2.28571

Erin z score is larger hence, he did better

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The solution to c is 66
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A cone that fits exactly inside the cylinder has the volume:
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3 years ago
What is the value of f(4) + f(7)
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7 0
4 years ago
The number of unread emails in Bryan’s account is 100. This number grows by 15 unread emails a day. The function N(t)=100+15t re
miv72 [106K]

Answer:

205

Step-by-step explanation:

Given

N(t) = 100 + 15t is the equation of the relation.

We're asked to find N(7)

Taking a look at the question again and putting it side by side the equation

N(t)

N(7)

We can deduce that t = 7, and as such, solve for it in the equation given

N(7) = 100 + 15(7)

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Therefore, the number of unread mails after 7 days will be 205

8 0
3 years ago
Convert from feet to yards.<br><br> 6,249 feet = ___ yards
Mashcka [7]

Answer:

2083

Step-by-step explanation:

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Hope I helped! :)

3 0
2 years ago
Read 2 more answers
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