All categories

3 years ago

What’s the correct answer I will mark as brainlist?

Mathematics

1 answer:

Len [333]3 years ago

3 0

Answer:

the answer is d or $90.56

Step-by-step explanation:

ummm math

You might be interested in

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:

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

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

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

2 years ago

8x+5=6x+19. Help me pleaseeeeeeeeeee

hammer [34]

Answer:

7x=12

Step-by-step explanation:

8x+5=6x+19

8x=6x+14

2x=14 Divided by 2 Equals x=7

7 0

3 years ago

Read 2 more answers

A survey of 240 families showed that.. 91 had a dog 70 had a cat 31 had a dog and a cat 91 had neither a cat nor a dog nor a par

noname [10]

This is a trick question. 7 families had a parakeet.

3 0

3 years ago

Janae's savings account has $50 on September 19. If she plans to save $5 every day, how much money will Janae have in her saving

Akimi4 [234]

Janae will have $ 95 in her account after 10 days.

<h3>What is an Arithmetic Progression?</h3>

A sequence of numbers that has a fixed common difference between any two consecutive numbers is called an arithmetic progression (A.P.)

Given,

Amount in Janae's account = $ 50

Amount she wishes to save for 10 days = $ 5

This scenario models an arithmetic progression(A.P)

In an A.P,

a _n = a + (n-1)d

where a _n = nth term, a is the first term, n is the no. of terms and d is the common difference.

In this question, a = 50, n = 10, d = 5 and we have to find out a _n

Therefore, a _n = 50 + (10-1)x5

= 50 + 45 = 95

Answer:- Janae will have $ 95 in her account after 10 days.

To learn more about arithmetic progression, refer to:

brainly.com/question/24191546

#SPJ10

8 0

1 year ago

Can someione help me with atoms?????

vampirchik [111]

Answer: The first one

Explanation: Is that right don't just rely on me haha if I helped u tell me please

6 0

3 years ago

Read 2 more answers