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sdas [7]
3 years ago
11

X more than 5 (a) x > 5 (b) 5x (c) 5 + x (d) x - 5

Mathematics
1 answer:
kirza4 [7]3 years ago
5 0

"More than" is codeword for addition. In this case, since this is "x more than 5", <u>our expression is 5 + x, or C.</u>

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A machine that fills beverage cans is supposed to put 12 ounces of beverage in each can. The standard deviation of the amount in
erica [24]

Answer:

\chi^2 =\frac{10-1}{0.0144} 0.0217 =13.54

The degrees of freedom are:

df=n-1=10-1=9

Now we can calculate the p value using the alternative hypothesis:

p_v =2*P(\chi^2 >13.54)=0.279

Since the p value is higher than the signficance level assumed of 0.05 we have enough evidence to FAIL to reject the null hypothesis and there is no evidence to conclude that the true deviation differs from 0.12 ounces

Step-by-step explanation:

Assuming the following data:"12.14 12.05 12.27 11.89 12.06

12.14 12.05 12.38 11.92 12.14"

We can calculate the sample deviation with this formula:

s =\sqrt{\frac{\sum_{i=1}^n (X_i -\bar X)^2}{n-1}}

n=10 represent the sample size

\alpha=0.05 represent the confidence level  

s^2 =0.0217 represent the sample variance

\sigma^2_0 =0.12^2= 0.0144 represent the value to verify

Null and alternative hypothesis

We want to determine whether the standard deviation differs from 0.12 ounce, so the system of hypothesis would be:

Null Hypothesis: \sigma^2 = 0.0144

Alternative hypothesis: \sigma^2 \neq 0.0144

The statistic can be calculated like this;

\chi^2 =\frac{n-1}{\sigma^2_0} s^2

\chi^2 =\frac{10-1}{0.0144} 0.0217 =13.54

The degrees of freedom are:

df=n-1=10-1=9

Now we can calculate the p value using the alternative hypothesis:

p_v =2*P(\chi^2 >13.54)=0.279

Since the p value is higher than the signficance level assumed of 0.05 we have enough evidence to FAIL to reject the null hypothesis and there is no evidence to conclude that the true deviation differs from 0.12 ounces

7 0
3 years ago
A delivery person uses a service elevator to bring boxes of books up to an office. The delivery person weighs 160 lbs and each b
german

Answer:

16 boxes

Step-by-step explanation:

160+50x=1000

Solve for the x and you'll get 16.8. Now, because you can't have a fraction of a box, and you can't go over the limit, the answer is 16 boxes.

(How to solve for x:

Get x by itself by subtracting 160 to both sides.

50x=1000-160

50x=840

Divide both sides by 50.

x=16.8)

8 0
3 years ago
Find the product <br>(3a+3b)(3a-2b)
vitfil [10]

Answer:

9a^2 + 3ab + 6b^2

6 0
3 years ago
A square scarf has a side length of 3/4 yard on each side.<br><br> What is the area of the scarf?
fredd [130]

Answer:

3 units or 3/1 (the fraction)

Step-by-step explanation:

Do 3/4 x 3 and you got 12/4 and that is simplified to 3

3 0
2 years ago
Read 2 more answers
10 + n = 1/3 ( 6n - 3 )
cestrela7 [59]

Answer:

n=11

Step-by-step explanation:

Hope this helps :)

7 0
3 years ago
Read 2 more answers
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