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rjkz [21]
3 years ago
11

Rachel and Sean had the same number of marbles. Rachel gave away

Mathematics
1 answer:
GrogVix [38]3 years ago
4 0

Answer:

They had 98 marbles

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The mean annual tuition and fees for a sample of 12 private colleges was 36,800 with a standard deviation of 5,000 . A dotplot s
Ilya [14]

Answer:

The value of the test statistic and degrees of freedom is 2.148 and 11 respectively.

Step-by-step explanation:

Consider the provided information.

The mean annual tuition and fees for a sample of 12 private colleges was 36,800 with a standard deviation of 5,000 .

Thus, n = 12, \bar x=36800 σ = 5000

degrees of freedom = n-1 = 12-1 = 11

H_0: \mu = 33700\ and\ H_a: \mu \neq 33700

Formula to find the value of z is: z=\frac{\bar x-\mu}{\frac{\sigma}{\sqrt{n}}}

Where \bar x is mean of sample, μ is the mean of population, σ is the standard deviation of population and n is number of observations.

z=\frac{36800-33700}{\frac{5000}{\sqrt{12}}}

z=2.148

Hence, the value of the test statistic and degrees of freedom is 2.148 and 11 respectively.

6 0
3 years ago
Julia and carl buy 2 sandwiches,1 salad,1piece of fruit and 2 drinks for lunch.They give the cashier 20.03.What coins and bills
Sergeeva-Olga [200]

Answer:

They would recieve cents as change.

Step-by-step explanation:

They bought 2 sandwiches, 1 salad, 1 piece of fruit and 2 drinks

Total = 6 items altogether

They gave cashier cash of 20.03

Which means all items are not more 20.03

If they would receive change, it would be in cents.

4 0
4 years ago
(2a^(3))^(-3)<br> --------<br> (3b(-2))
Andrei [34K]
Hello,

\dfrac{(2a^{3})^{-3}}{3b*(-2)}=-\dfrac{1}{(2a^3)^3*6b}=-\dfrac{1}{48a^9b}



7 0
3 years ago
You had 15 text messages, deleted 2 then got 5 more, you responded to 4,
Law Incorporation [45]

Answer:   The answer is C


Step-by-step explanation:  15 - 2 = 13     13+5=18




Hope this helps :)


8 0
4 years ago
5 1/3 + ( 2 1/3 + 1 1/3)=
Fiesta28 [93]
Okay so you want to do the parentheses first okay? So 2.3333...+1.3333333 is?3.666 or 3 2/3. So you got that right? So then 5 1/3+ 3 2/3. You get an easy 9. Because 1/3+ 2/3 adds up to 3/3, and is normally written as 1. So add a one to 5+3=8+1.
6 0
4 years ago
Read 2 more answers
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