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morpeh [17]
3 years ago
12

Please solve this and give answer

Mathematics
1 answer:
Nikolay [14]3 years ago
4 0

Answer:

Step-by-step explanation:

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The mean height of women in a country​ (ages 20-​29) is 64.5 inches. A random sample of 75 women in this age group is selected.
Allushta [10]

Answer:

0.07378

Step-by-step explanation:

We solve using z score formula

z = (x-μ)/σ/√n, where

x is the raw score = 65 inches

μ is the population mean= 64.5 inches

σ is the population standard deviation = 2.99

n = 75

z = 65 - 64.5 /2.99/√75

z = 0.5/0.345255461

z = 1.4482

Probability value from Z-Table:

P(x<25) = 0.92622

P(x>25) = 1 - P(x<25)

= 1 - 92622

= 0.07378

The probability that the mean height for the sample is greater than 65 ​inches is 0.07378

4 0
3 years ago
Sharon wants to buy a shirt that costs $60. The sales tax is 5%. How much is the sales tax? What is her total cost for the shirt
Ivahew [28]

Answer:

$3 sales tax

$63 total cost

Step-by-step explanation:

5% of 60 is 3, so that'd be 60 + 3 which is 63, or $63

hope this helps!!!

stay safe!!!

4 0
4 years ago
Read 2 more answers
The ratio of three numbers is 4 : 5 : 3. The sum of the numbers is 54. List the numbers in ratio form.
klemol [59]

let it be x.

4x + 5x + 3x = 54

12x = 54

x = 54/12

x = 4.5

Now 4x = 4× 4.5

= 18

3x = 3 × 4.5

=13.5

5x = 5× 4.5 = 22.5

7 0
3 years ago
Read 2 more answers
Can I have help with these? Picture attached.
8_murik_8 [283]

Answer:

5. mCD is 27.8°  |  7. mAFC 52.3° |

Step-by-step explanation:

8 0
3 years ago
Identify the independent variable in the statement: the time it takes to travel 50 miles and the speed of the truck
morpeh [17]
The time changes depending on how fast the truck is going-so it's dependent 
50 miles and the truck do not change no matter what-so they are constant
The speed of the truck changes the time-so the speed is the independent

3 0
3 years ago
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