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Igoryamba
3 years ago
12

7.

Mathematics
1 answer:
vodka [1.7K]3 years ago
4 0

Answer:

28 ft

Step-by-step explanation:

You might be interested in
How do I solve this?: The times of all 15 year olds who run a certain race are approximately normally distributed with a given m
Effectus [21]
We need to 'standardise' the value of X = 14.4 by first calculating the z-score then look up on the z-table for the p-value (which is the probability)

The formula for z-score:
z = (X-μ) ÷ σ

Where
X = 14.4
μ = the average mean = 18
σ = the standard deviation = 1.2

Substitute these value into the formula

z-score = (14.4 - 18) ÷ 1..2 = -3

We are looking to find P(Z < -3)
The table attached conveniently gives us the value of P(Z < -3)  but if you only have the table that read p-value to the left of positive z, then the trick is to do:
1 - P(Z<3)

From the table
P(Z < -3) = 0.0013

The probability of the runners have times less than 14.4 secs is 0.0013 = 0.13%


5 0
4 years ago
Read 2 more answers
write story about santa cluse and how you blelife when you are 4 or 5 years old .and how you change your mind right know
belka [17]

Answer:

Growing up i all ways have believed in Santa Claws it was so nice to get presents and clothes and it was something fun to look forward to every year and would also keep me on my best behavior. But as iv grown up, iv been told that Santa is fake when i heard this i was devastated,  but now i realize that Christmas is not about toys and candy, it is about the Lord and Saviors birth. so i dont need a Santa Claws to have a good Christmas, i just need a family to spend time with.

Hope this helped, have a nice day!


4 0
3 years ago
Liza earn some money delivering newspapers she bought a battery for $1.95 and gave her mother $30 she bought a ring for $7.20 an
SIZIF [17.4K]
The total amount of money that Liza made delivering newspapers was equal to $116.15.
4 0
3 years ago
Which number is 247, 039 ruonded to the nearest thousand?
djverab [1.8K]

247,039 rounded to the nearest thousand becomes

247,000

7 0
3 years ago
Read 2 more answers
Please answer fast!
xz_007 [3.2K]

Answer:

I believe your answer is 429.

Step-by-step explanation:

5 1/2 x 6 1/2 x 12 = 429

8 0
3 years ago
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