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anzhelika [568]
3 years ago
7

Assume that women’s heights are normally distributed with a mean given by μ=63.5

Mathematics
2 answers:
slavikrds [6]3 years ago
5 0

Answer:64.3738

Step-by-step explanation:

xz_007 [3.2K]3 years ago
3 0

Answer:

Part a) 0.5636  or 56.36%

Step-by-step explanation:

Part a)

Given the info on mean and standard deviation, we evaluate the Z-score as:

Z = (64 - 63.5)/3.1 = 0.16

and use the Z-tables to find that

P(x < 64) = 0.5636  = 56.36%

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The ratio of boys to girls in a school is 5:4. if there are 500 girls , how many boys are there in the school?
lana [24]

Answer:

The number of boys in the school is;

625

Explanation:

Given that the ratio of boys to girls in a school is 5:4;

5\colon4

And there are 500 girls in the school.

The number of boys in the school will be;

\begin{gathered} \frac{B}{G}=\frac{5}{4} \\ G=500 \\ B=\frac{5\times G}{4}=\frac{5\times500}{4} \\ B=625 \end{gathered}

Therefore, the number of boys in the school is;

625

3 0
11 months ago
Corinna's cell phone bill was $52.75 in July.
rodikova [14]

Answer:

The answer is 21.10

Explanation:

If her bill in July was $52.75 and her bill in August was only 60% of July

60% of 52.75 is 31.65

and they asked how much more she paid:

52.75-31.65 = 21.10

hope this helps!

7 0
2 years ago
Casey buys a bracelet. She pays for the bracelet and pays \$0.72$0.72 in sales tax. The sales tax rate is 6\%6%. What is the ori
aleksklad [387]

Answer:

$12.00

Step-by-step explanation:

If they paid $0.72 in tax and tax is 6% or .06 then you could create an equation like this: x * .06 = .72 with x representing the original cost of the bracelet. Now you can just solve for x like so:

x * .06 = .72

÷.06       ÷.06

x = 12

7 0
2 years ago
Read 2 more answers
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3.25 if you round it it’ll be 3.3
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A stone fell from the top of a cliff into the ocean.
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Step-by-step explanation:

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