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vodomira [7]
3 years ago
12

Suppose a sample of 256 was taken from a population with a standard deviation of 64 centimeters. What is the margin of error for

a 68% confidence interval?
A. 6
B. 8
C. 10
D. 4
Mathematics
2 answers:
Ganezh [65]3 years ago
8 0
I think the answer is b
Serhud [2]3 years ago
6 0
I feel like the answer is d
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HELP PLEASE! 50 POINTS AND WILL MARK BRAINLIEST.
alex41 [277]

Answer:

a) independent = hours

   dependent = wages

b ) W = 10 + 5h

c)27.50

Step-by-step explanation:

The independent variable is the one that you change which is the number of hours that it takes

The dependent variable is the variable that changes based on the independent variable.  The wages depends on the hour worked so the wages are the independent variable

The wages equal the fixed cost plus the hourly rate times the number of hours  where W is the wages and h is the number of hours

W = 10 + 5h

W = 10 + 5( 3.5)

    = 10 + 17.5

    = 27.5

5 0
3 years ago
Which Expression Can Be Used To Determine the nth term in the pattern below<br> 20,25,30,35,40
maw [93]

Answer:

see explanation

Step-by-step explanation:

These are the terms of an arithmetic sequence with n th term

a_{n} = a + (n - 1)d

where a is the first term and d the common difference

d = 25 - 20 = 30 - 25 = 5 and a = 20, hence

a_{n} = 20 + 5(n - 1) = 20 + 5n - 5 = 5n + 15 ← n th term formula

8 0
2 years ago
Jen deposited $750 in her savings account. The account earns 2% simple interest per year. She has the money in her account for 2
cluponka [151]

Answer: $30

Step-by-step explanation:

She has the money in her account for 24 months which is 2 years.

Simple interest is formula is:

A = P (1 + rate * no. of periods)

= 750 * ( 1 + 2% * 2)

= $780

She started with $750 and now has $780.

Earnings in simple interest :

= 780 - 750

= $30

6 0
3 years ago
Beth has 5400 in her savings account and withdraws 1/6 of it. The next day she withdraws 2/9 of what remains. How much is left i
faltersainse [42]
1/6 of 5400 is 900 so 5400-900=4500
1/9 of 4500 is 500 so multiply it by 2 and you will get 1000
2/9 of 4500 is 1000,4500-1000=3500

So your answer is 3500
5 0
3 years ago
What is the decimal representation of 2/10
ad-work [718]
.2 is the decimal representation of 2/10
3 0
3 years ago
Read 2 more answers
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