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hichkok12 [17]
3 years ago
13

The weight of laboratory mice follows a normal distribution, with a mean of 0.68 ounce and a standard deviation of 0.02 ounce. W

hat percentage of the mice weigh between 0.62 ounce and 0.74 ounce?
A.99.7%
B.95%
C.68%
D.47.5%
E.34%
Mathematics
2 answers:
Natasha2012 [34]3 years ago
8 0
The answer is letter D
Soloha48 [4]3 years ago
6 0

Answer:

A.99.7%

Step-by-step explanation:

Calculate each z-score.

z = (x − μ) / σ

z = (0.74 − 0.68) / 0.02

z = 3

z = (x − μ) / σ

z = (0.62 − 0.68) / 0.02

z = -3

You can use a z-score table, or use the empirical rule.

P(-3 < z < 3) = 99.7%.

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One more question, sorry can someone please help?​
CaHeK987 [17]

Answer:B

Step-by-step explanation:

Honestly when I did the math I got closest to b so I think it's B hope his helps

8 0
2 years ago
4х – 9у – 2 = 0 <br>12х - 5у + 38 = 0 <br>answer in x and y intercept​
garri49 [273]

Answer:

x=5

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Step-by-step explanation:

-3(4х – 9у – 2 = 0)

=-12x+27y+6

12х - 5у + 38    

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x:

4x-9(2)-2=

=4x-20

4x=20

x=5

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Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions here.

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