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3 years ago

Can someone help with my math

Mathematics

2 answers:

Akimi4 [234]3 years ago

6 0

Answer:

220 yards

Step-by-step explanation:

VikaD [51]3 years ago

5 0

Answer: 220 yards

Step-by-step explanation:

I hope this helps!

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The average age at which adolescent girls reach their adult height is 16 years. Suppose you have a sample of 27 adolescent girls

abruzzese [7]

Answer:

a) t-statistic t = 0.9532

b) The standard error S.E = 1.2

c) The new t-statistic = 1.95

d) The new estimated standard error =0.666

Step-by-step explanation:

Step(i):-

Given that the mean of the Population = 16

The sample size n=27

The mean of the sample = 17.1

Given that the variance of the sample (S²) = 36.0

The standard deviation of the sample (S) = √36 = 6

Test statistic

$t = \frac{x^{-} -mean}{\frac{S.D}{\sqrt{n} } }$

$t = \frac{17.1 -16}{\frac{6}{\sqrt{27} } }$

t = 0.9532

The standard error is defined by

$S.E = \frac{S.D}{\sqrt{n} } = \frac{6}{\sqrt{27} } =1.154$

Step(ii):-

c) given that the sample size n = 81

Test statistic

$t = \frac{x^{-} -mean}{\frac{S.D}{\sqrt{n} } }$

$t = \frac{17.1 -16}{\frac{6}{\sqrt{81} } }$

t = 1.65

The new standard error is defined by

$S.E = \frac{S.D}{\sqrt{n} } = \frac{6}{\sqrt{81} } = 0.66$

3 0

3 years ago

Plz help will give brainlest

creativ13 [48]

Answer:

Its C because I did the math and I got it right

Step-by-step explanation: And plus he needs to spend money and times 4 and then you'll get a negative because thats how much he is spending. MARK BRAINLIST

4 0

3 years ago

Help me plzzz!! I need to get this right.

NARA [144]

The formula for circumference is

C=(pi)d

11304=(pi)d

assume pi is 3.14

rearrange formula

d= c / (pi)

= 11304 / 3.14

d= 3600

3 0

4 years ago

Read 2 more answers

Category Value ($)

Sladkaya [172]

Answer:

Option c. $2,250

Step-by-step explanation:

we know that

The minimum household income needed for the given budget, must be equal at least to the sum of all categories values of the monthly budget

Find the sum of all categories values

$\$1,100+\$500+\$100+\$100+\$150+\$100+\$50+\$150=\$2,250$

therefore

The minimum household income needed for this budget is $2,250

3 0

3 years ago

On average, college graduates spend more money on the lottery than those with only a high school education. True or false?

Anettt [7]

True. College graduates often spend more money on lottery tickets than those with only a high school education, hoping to win big to pay off student loans. Hope this helps!

5 0

3 years ago

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